A Circuit Protection Leader Littelfuse is committed to the automotive industry, and that commitment is the key to Littelfuse’s leadership in automotive circuit protection. It promotes the growth of our technology, solidifies our partnerships with customers around the world, and strengthens our assurance of quality from product design and manufacturing to delivery and service. Technology With leadership comes responsibility. It has become our job to forecast the future of automotive circuit protection, and we take that job very seriously. No other manufacturer has impacted the growth of circuit protection technology as much as Littelfuse. Littelfuse holds 170+ patents on circuit protection devices, more than all the other fuse manufacturers combined. With an engineering team made up of the world’s top circuit protection designers, an Advanced Materials Lab devoted solely to the exploration of new technologies, and a worldwide sales staff in close contact with automotive manufacturers around the globe, Littelfuse is driving the future of circuit protection. Whether it is alternative power sources, electronics applications, or unique accessories with special needs, Littelfuse is developing the solutions today for the challenges you will face tomorrow. Partnerships Quality Our commitment to the automotive industry is apparent in the way we view our customers - as partners. Littelfuse has strategic partnerships with every major automotive OEM, working with their designers to find out exactly what they need and provide them with timely, effective and safe solutions. Littelfuse’s engineering staff is always ready to help you with “Quick Fixes” to your circuit protection dilemmas, producing specially designed products that meet your needs right now. Quality is essential in circuit protection. It is not just a word. It is a factor that can impact the safety and economic viability of those using our products and their customers. Littelfuse is built on a tradition of quality and has earned a reputation for product reliability and exemplary service. We design our fuses to meet the highest expectations, test them to exceed all required standards, and work towards reduced cycle times, improved productivity and zero defects. With sales, service and distribution centers in the United States, United Kingdom, The Netherlands, Brazil, Korea, Philippines, Mexico, Singapore, Hong Kong and Japan, and manufacturing facilities located throughout the world, Littelfuse is a global circuit protection provider. Our worldwide reach confirms our ability to partner with customers in every automotive market, as well as an international assembly of suppliers who demonstrate an ability and commitment to support the quality we promise to our customers. With our entire worldwide operations ISO 14001 certified, QS-9000 and TS16949 certification attained by all our facilities in North America and Europe, Littelfuse takes extra steps to ensure that we are ready to meet the challenges ahead. With the largest selection of circuit protection products available to the automotive industry, and a commitment to developing new technologies, sustaining mutually beneficial long-term partnerships, and continuously improving quality, Littelfuse is the circuit protection provider of choice for automotive OEMs around the world. Visit our web site at www.littelfuse.com Fuseology 4 ® Low Profile JCASE Fuses 9 CABLEPRO® Fuses 10 Low Profile MINI® Fuses 11 MINI® Fuses 12 MAXI® Fuses 13 ® ATO Fuses 14 JCASE® Fuses 15 ® MIDI Fuses 16 ® MEGA Fuses 17 MINI® 42 Fuses 18 MAXI® 42 Fuses 19 JCASE® 42 Fuses 20 The Littelfuse Quality Policy Littelfuse is committed to being sensitive to customer expectations and to providing quality products and services at a competitive price. In support of this commitment, Littelfuse will: PAL Fuses TM 21 EV Fuses 22 Automotive Electronics 23 Fuseholders 27 Special Products 32 Fuse Pullers 33 Encourage quality awareness and quality performance in all associates at all levels of the Company through management leadership; Promote the participation of all associates in making individual contributions to the quality improvement process; Support continuous quality improvement by providing our associates with the necessary training, tools, and information feedback to enable enhancement of the quality of our products and services; Develop relationships with suppliers who consistently demonstrate their ability to fulfill quality, price and delivery objectives that are mutually beneficial; and, Build quality into our products and services, striving for zero defects in everything we do, thereby reducing cost and increasing Total Customer Satisfaction. 3 Fuseology Types of Overcurrents An overcurrent is any current which exceeds the ampere rating of wiring, equipment or devices under conditions of use. The term “overcurrent” includes both overloads and short circuits. A. Overloads An overload is an overcurrent which is confined to normal current paths. An overload occurs when the current exceeds the value for which the wires or equipment are rated. This can happen when too many devices are connected to the circuit, or when a device connected to the circuit malfunctions in a way that causes it to draw higher than normal current, usually in the range of one to six times normal current. Sustained overloads eventually overheat circuit components. Therefore, fuses must open circuits experiencing sustained overloads before damage occurs. B. Short Circuits A short circuit is current out of its normal path. It occurs when accident or malfunction creates an unintended path for the electricity to flow from the battery or alternator to ground. This shorter, more direct path to ground bypasses the resistance normally offered by the wiring and devices connected to the circuit. With virtually no resistance left to impede current flow, the voltage forces higher and higher current to flow through the wires to the point of the short. Under such a condition, the current will quickly build to such a high level that the heat generated can cause insulation to burn and equipment to be damaged unless the circuit is opened through the use of a fuse. III. Fuse Selection Parameters Since overcurrent protection is crucial to reliable electrical system operation and safety, fuse selection and application should be carefully considered. When selecting fuses, the following parameters should be evaluated: A. Voltage Rating The voltage rating, as marked on a fuse, indicates the maximum voltage of the circuit for which the fuse is designed to operate safely in the event of an overcurrent. Therefore, the fuse’s voltage rating must equal or exceed the available circuit voltage where the fuse will be installed. System voltage exceeding the fuse’s rated voltage may result in fuse damage. The voltage rating is 32 volts DC for the MINI®, MAXI™, ATO®, MIDI®, MEGA®, and CABLEPRO® Fuses. B. Interrupting Rating The interrupting rating (also known as breaking capacity or short circuit rating) is the maximum current, as stated by the manufacturer, which the fuse can safely interrupt at rated voltage. During a fault or short circuit condition, a fuse may 4 receive an instantaneous current many times greater than its normal operating current. Safe operation requires that the fuse remain intact (no body rupture) and clear the circuit. The interrupting rating is 1000A @ 32 volts DC for the MINI, MAXI, ATO, and JCASE fuses, and 2000A @ 32 volts DC for the MEGA, MIDI, and CABLEPRO Fuses. C. Time-Current Characteristics A fuse’s time-current characteristics determine how fast it responds to different overcurrents. All fuses have inverse time-current characteristics, so opening time decreases as overcurrents increase. Time-current characteristics are presented graphically on standardized “log-log” paper. Figure 1 is a sample time-current curve for the MAXI Fuse series for fuses rated 20-60A. Current values increase from left to right, and time increases from bottom to top. The average melting time for any current can be determined from the curve. For example, from Figure 1 it can be determined that a 20A MAXI Fuse experiencing an overload of 100A will open in about 0.5 seconds. At 40A, the same 20A MAXI Fuse would open in about 15 seconds. Time-current curves are also used to compare fuses of the same series but of different current ratings. Suppose it was desired to compare the opening times of 20A and 60A MAXI Fuses at an overload of 100A. From the curve in Figure 1, one can see that the 20A fuse opens in about 0.5 seconds at 100 amps, whereas the 60A fuse does not open until about 100 seconds. 20A 25A 30A 35A 40A 50A 60A II. Introduction The purpose of this Fuseology section is to promote a better understanding of fuses and some of the more common application details. The fuses to be considered are current-sensitive devices which are designed as the intentional weak link in the electrical circuit. The function of a fuse is to provide discrete component or complete circuit protection by reliably melting under overcurrent conditions and thus safely interrupting the flow of current. 1000 100 TIME IN SECONDS I. 10 1 0.1 0.01 10 100 1000 10000 CURRENT IN AMPERES Figure 1: Average Melting-Current Curve for the MAXI Fuse Series (20-60A) Visit our web site at www.littelfuse.com Fuseology It is important to note that time-current curves give only average melting times and are presented as a design aid but are not considered as part of the fuse specifications. operation at 25˚C to avoid nuisance blowing. For example, a fuse with a current rating of 10A is not usually recommended for operation at more than 7.5A in a 25˚C ambient. The term used in fuse design that describes how rapidly a fuse responds to various overcurrents is the fuse’s “characteristics.” Automotive fuse characteristics are determined by the fuse’s degree of time delay. Initial or start-up pulses are normal for many automotive applications and require fuses to have a time delay designed in to enable them to survive these pulses and still provide protection against prolonged overloads. Fuses such as the MINI® Fuse and ATO® Fuse have a moderate degree of time delay, whereas fuses like the MAXI™ Fuse and MEGA® Fuse have a high degree of time delay which enables them to handle high inrush currents like those caused by motor start-ups. Figure 2 compares sample time-current curves of a 30A MINI Fuse to a 30A MAXI Fuse. To see that the MAXI Fuse has more time delay than the MINI Fuse, compare their opening times at an overload of 100A. Despite the fact that the fuses are the same rating, the MINI Fuse opens in about 0.1 seconds while the MAXI Fuse opens in about 2.2 seconds. 2. Rerating for Ambient Temperature The current carrying capacity tests of fuses are performed at 25˚C and will be affected by changes in ambient temperature. At higher ambient temperatures, a fuse will respond faster to a given overload. Conversely, at lower ambient temperatures, a fuse will respond slower to a given overload. In addition, the temperature of the fuse increases as the normal operating current approaches or exceeds the rating of the fuse. A MINI Fuse operating at 25˚C and 110% of rated current has a minimum life of 100 hours. However, if that same fuse were operated at a very high ambient temperature, rerating would be necessary. Figure 3 is a sample temperature rerating curve for the MINI Fuse. The following example shows how to use such a curve. Suppose there is a normal operating current of 15 amperes in a particular circuit, and the ambient temperature will be 105˚C instead of 25˚C. Which MINI Fuse rating should be used? From Figure 3, the percent of rated current to be used at an ambient temperature of 105˚C is 88%, so: When selecting a fuse, the start-up pulse should be defined 1000 Ideal fuse rating = Normal operating current Temp rerating factor x 0.75 100 15A 0.88 x 0.75 120 10 115 Rerating Factor (% Rated Current) TIME IN SECONDS = 30A MAXITM FUSE 30A MINITM FUSE 1 0.1 110 105 100 95 90 85 80 75 0.01 70 1 10 100 1000 CURRENT IN AMPERES -40 10000 -20 0 40 20 60 80 100 120 140 Ambient Temperature (˚C) Figure 2: Average Melting-Current Curve Comparing 30A MINI Fuse to 30A MAXI Fuse Figure 3: MINI Fuse 297 Series Temperature Rerating Curve = and then compared to the time-current curve for the fuse. D. Current Rating The current rating is the maximum current which the fuse can continuously carry under specified conditions. 1. Normal Operating Current The current rating of a fuse is typically derated 25% for 22.73A Therefore, a 25A or larger MINI Fuse should be used. E. Transient Overcurrent Considerations Transient pulses of inrush current are commonplace in vehicle electrical systems. The transient overcurrent pulses affect the life of automotive fuses. 5 Fuseology 1. Figure 4 shows how I2t of the pulse can be calculated from the graph of the pulse current as a function of time. Figure 5 is a graph of the pulse cycle withstand capability of blade fuses. Because electrical pulse conditions can vary considerably from one application to another, I2t I2t is an expression of the available thermal energy resulting from current flow. With regard to fuses, the term is usually expressed as melting, arcing, and total clearing I2t. The units for I2t are expressed in amperesquared-seconds [A2s]. Melting I2t: the thermal energy required to melt a specific fuse element. 1000000 Arcing I2t: the thermal energy passed by a fuse during the arcing time. The magnitude of arcing I2t is a function of the available voltage and stored energy in the circuit. I2t has two important applications to fuse selection. The first is pulse cycle withstand capability and the second is selective coordination. 1000 Pulse Cycle Withstand Capability Electrical pulses produce thermal cycling and possible mechanical fatigue that could affect the life of the fuse. 100 For this reason, it is important to know the pulse cycle withstand capability of the fuse, which is defined as the number of pulses of a given I2t value that can be withstood by the fuse without opening, assuming that there is sufficient cool down time between pulses. 10 33 2. 10000 NUMBER OF PULSES Total Clearing I2t: the thermal energy through the fuse from overcurrent inception until current is completely interrupted. Total clearing I2t = (melting I2t) + (arcing I2t). 100000 3 sigma confidence limit Actual # of pulses 1 0.1 1 RELATIVE I2t WAVESHAPE FUNCTION AND VALUE i=k I2t = ic2t ic t ib t i = ic + kt I2t = (1/3)(ic2+ibic+ib2)t t i = ic sin t I2t = (1/2)ic2t ic ic i = + kt I2t = (1/3)ic2t ic t Figure 5: Pulse Cycle Withstand Capability for Blade Fuses application testing is recommended to establish the ability of the fuse design to withstand the pulse condition. 3. Selective Coordination In a selectively coordinated system, only the fuse immediately on the line side of an overcurrent opens. Upstream fuses remain closed and undamaged. All other equipment remains in service, which simplifies locating overloaded equipment or short circuits. In Figure 6, if a short circuit arises behind fuse #1, fuse #1 should open and fuse #2 should stay closed and undamaged. The condition necessary to assure this result is that the minimum melting I2t of the supply side fuse (fuse #2) must be greater than the total clearing I2t of the load side fuse (fuse #1). This condition results in FUSE #2 ic t t ic t i = kt2 I2t = (1/5)ic2t i = ice-t/t I2t = (1/2)ic2t Figure 4: Evaluating the I2t of a Variety of Current Wave Shapes 6 FUSE #1 SUPPLY SIDE LOAD SIDE Figure 6: Selective Coordination for Fuses in Series Visit our web site at www.littelfuse.com Fuseology the load side fuse opening before the supply side fuse begins to melt. Minimum melting and total clearing I2t data are given in this catalog. IV. Voltage Drop Across Terminals A fuse is only as good as the system in which it is used. One aspect of the electrical system that has considerable effects on the performance of the fuse is the quality of the connection between the fuse and the cable it protects. High voltage drop across the fuse/terminal interface creates additional thermal loading, which in turn causes shifts in the time-current characteristics of the fuse. Table 1 below gives the maximum recommended voltage drop per terminal for automotive fuses. Figure 7 indicates the measurement locations used to determine the TYPE ATO® FUSE MINI® FUSE MAXI® FUSE MEGA® FUSE MAXIMUM RECOMMENDED VOLTAGE DROP PER TERMINAL [mV] 30 30 30 15 Table 1: Maximum Recommended Voltage Drop per Terminal voltage drop across the terminal. The voltage drop across the left terminal would be V2-4 and the voltage drop across the right terminal would be V1-3. V. Skiving Process In order to provide predictable fuse opening characteristics, it is necessary to have tight fuse element resistance control during the manufacturing process. The resistance of electrically conductive material is determined by the formula: R=pL/A, where p is the resistivity, L is the length of the material, and A is the area of material cross-section. A is determined by the thickness T and width W of cross-section area. The thickness T is the parameter to control and adjust with least variation compared with other parameters’ adjustment in resistance control. Littelfuse accurately controls the thickness and resistivity of the fuse element by using a skiving process in manufacturing. Skiving is the removal of a precise amount of material from a strip of that material. During fuse production, a coil of material is skived and the fuse element is stamped from the skived section. Figure 8 shows the coil of material and the skived section. The A A 1 2 SECTION A-A Figure 8: Coil of Material with Skived Section 4 3 Skived Occurrence Unskived Figure 7: Measurement Locations along the Fuse/Terminal/Cable System Used to Determaine the Voltage Drop across the Terminal Resistance Figure 9: Resistance Spread - Skived vs. Unskived 7 Fuseology skiving process ensures that each fuse is a calibrated device. Figure 9 is a graph of the resistance spread with skived vs. unskived showing the increased accuracy provided by skiving. Maximum Recommended Continuous Current Max. Continuous Current (A) Wire Size VI. Diffusion Diffusion Pill Technology is a mixing of molecules, atoms or crystals in the solid, liquid or gaseous state. Diffusion Pill Technology is often used in the design of fuses for automotive, electronic and industrial fuse applications. “M-effect” is the method of diffusing one metal into another to form a new alloy with a lower melting point. Littelfuse uses the “M-effect” to produce three very desirable characteristics in fuse designs: lower melting temperature, time delay, and lower voltage drop. By affixing a diffusion pill tin to the element, the melting temperature is decreased. This decrease in melting temperature reduces the fuse rating. In order to reestablish its original rating the fuse elements’ cross section needs to increase. An increase in cross section increases the blow time at higher overload condition. A higher degree of time delay enables a fuse to withstand higher current inrush pulses. This increase in cross section reduces the overall fuse resistance and voltage drop. VII. Match Wire Gauge to Fuse In order to protect wiring under all overload and short circuit conditions, it is necessary to standardize the fuse and wire selection process. mm2 0.3 0.5 0.75 0.8 1 1.5 2 2.5 3 4 5 6 8 10 13 19 At 25˚C Gauge No. 20 18 16 14 12 10 8 6 4 At 80˚C At 105˚C GXL (1) GPT (2) GXL (1) GPT (2) GXL (1) 15 21 27 31 33 43 50 60 68 80 90 103 125 146 170 221 10 15 21 22 23 30 36 42 47 56 65 73 87 103 120 156 11 16 20 23 25 33 37 45 51 61 68 78 96 111 129 166 4 6 7 7 9 12 14 15 18 22 23 28 30 40 47 61 9 13 17 19 20 27 32 38 42 50 58 64 79 90 105 137 (1) = General purpose cross link polyethylene insulation wire with a maximum insulation temperature of 155˚C. (2) = General purpose thermoplastic insulation wire with a maximum insulation temperature of 90˚C. Fuses have controlled opening characteristics, and each wire gauge has its respective current carrying capacity. Fuses need to be selected to always protect the wire insulation from damage. In the selection of wire gauge at various ambient temperatures, it is important to consider the worst case or highest ambient temperature for the application. Wires derate to a much higher degree than fuses, because wire insulation temperature capability is affected much more severely. For further reference, there are specific application guides available. Please consult the nearest Littelfuse sales office if any additional application information is needed. 8 Visit our web site at www.littelfuse.com New Low Profile JCASE® Fuses The Low Profile JCASE fuse has similar performance characteristics as the standard JCASE fuse. The lower overall height reduction allows for more space and weight savings and also allows for a shorter male blade terminal, saving additional weight and material savings in fuse box designs. LOW PROFILE JCASE FUSE TABLE Part Number 895020 895025 895030 895040 895050 895060 Current Rating (A) 20 25 30 40 50 60 TIME-CURRENT CHARACTERISTICS Housing Color Blue White Pink Green Red Yellow % of Rating 100 135 200 350 600 Opening Time Minimum Maximum 100 hrs 60 s 4s 0.2 s 0.04 s — 1800 s 60 s 7s 1s Interrupting Rating: 1000A @ 58 VDC Voltage Rating: 58 VDC Ambient Temp: -40˚C to + 125˚C 9 New CABLEPRO® Cable Protector Fuses The CablePro fuse is designed to replace conventional wire fusible links in high current automotive applications. The slim package of the CablePro fuse fits into tight locations and has predictable electrical opening characteristics similar to the Mega fuse. The predictable and reliable performance characteristics of the CablePro, makes this product a far superior method for protecting high current circuits over wire fusible links. CABLEPRO CABLE Table Time-Current Characteristics Part Number Current Rating (A) Wire Size 496060 496080 496100 496125 496150 496175 496200 60 80 100 125 150 175 200 5mm2 (10AWG) 8mm2 (8AWG) 8mm2 (8AWG) 13mm2 (6AWG) 19mm2 (4AWG) 19mm2 (4AWG) 19mm2 (4AWG) % of Rating 100 135 200 350 600 Opening Time Minimum 100 hrs. 120 s 10 s 1s 0.3 s Maximum —1800 s 300 s 15 s 5s CABLE TYPE: SAE J1127(4 & 6 AWG) & SAE J1128(8 and 10 AWG) INTERRUPTING RATINGS: 2000 amperes @ 32 VDC ENVIRONMENTAL SPECIFICATIONS: Operating Temperature Range: -40ºC to +125ºC 10 Visit our web site at www.littelfuse.com New Low Profile MINI Fuses ® The Low Profile Mini fuse has similar performance characteristics as the standard Mini fuse. The lower overall height allows for more space and weight savings. The Low Profile Mini fuse is designed to mate with tuning-fork terminals, which provides additional weight and material savings in fuse box designs by eliminating the need for female box terminals. MINI Fuse Table Part Number Current Rating (A) Housing Color 897002 897003 897004 897005 89707.5 897010 897015 897020 897025 897030 2 3 4 5 7.5 10 15 20 25 30 Gray Violet Pink Tan Brown Red Blue Yellow Clear Green Time-Current Characteristics % of Rating 110 135 200 350 600 Opening Time Minimum 100 hrs. 0.75 s 0.15 s 0.080 s 0.030 s Maximum —1800 s 5s 0.250 s 0.100 s Interrupting Rating: 1000A @ 58 VDC Voltage Rating: 58 VDC Ambient Temp: -40˚C to +125˚C 11 MINI® Blade Fuse 2A 3A 4A 5A 7.5A 10A 15A 20A 25A 30A The MINI Fuse is quickly becoming the new standard for vehicle circuit protection throughout the world. Its miniature design, patented by Littelfuse, meets the need for more circuits to be protected while utilizing less space, and its ability to cope with high temperatures in adverse environments makes the MINI Fuse the recommended choice for protection. 1000 TIME IN SECONDS 100 10 1 0.1 3.8 0.01 1 10 100 1000 CURRENT IN AMPERES 8.8 Time-Current Characteristics % of Rating 110 135 200 350 600 7.5 0.81 2.8 10.9 Meets SAE J2077 Part Number Current Rating (A) Housing Color 297002 297003 297004 297005 29707.5 297010 297015 297020 297025 297030 2 3 4 5 7.5 10 15 20 25 30 Gray Violet Pink Tan Brown Red Blue Yellow Clear Green Typ. Voltage Drop at Rated Current (mV) 171 153 121 129 135 108 98 96 86 87 See page 32 for MINI Resistors, Diodes, and Shunts. Maximum —600 s 5s 0.500 s 0.100 s Interrupting Rating: 1000A @ 32 VDC Voltage Rating: 32 VDC Ambient Temp: -40˚C to +125˚C MINI Fuse Temperature Rerating Curve 120 115 Rerating Factor (% Rated Current) MINI Fuse Table Opening Time Minimum 100 hrs. 0.75 s 0.15 s 0.080 s 0.030 s 110 105 100 95 90 85 80 75 70 -40 -20 0 20 40 60 80 100 120 140 Ambient Temperature (˚C) 12 Visit our web site at www.littelfuse.com MAXI®Blade Fuse 20A 25A 30A 35A 40A 50A 60A With “Diffusion Pill Technology,” the MAXI Fuse provides excellent time delay characteristics and low heat dissipation. Designed and patented by Littelfuse, the MAXI Fuse is ideal for motor powered applications which have large inrush currents. 1000 TIME IN SECONDS 100 10 1 0.1 0.01 10 100 1000 10000 CURRENT IN AMPERES Time-Current Characteristics 29.21 (1.15") 8.85 (.35") % of Rating 135 21.59 (.85") 200 12.70 (.50") 0.81 (.032") 350 600 8.13 (.32") Opening Time Max/Min (s) 20A 25A 30A 35A 40A 50A 60A 70A 1800 1800 1800 1800 1800 1800 1800 1800 60 60 60 60 60 60 60 60 20 30 30 40 40 50 60 60 4 6 6 8 8 10 15 4 2 4 4 5 5 6 7 2 0.7 1 1 1.4 1.4 1.7 2 0.20 1 1 1 1 1 1 1 1 0.15 0.20 0.20 0.20 0.20 0.20 0.20 .1 80A 1800 60 60 4 2 0.20 1 .1 Interrupting Rating: 1000A @ 32 VDC Voltage Rating: 32 VDC Ambient Temp.: -40˚C to +125˚C 29.21 (1.15") MAXI Fuse Temperature Rerating Curve Part Number 299020 299025 299030 299035 299040 299050 299060 299070 299080 Current Rating (A) 20 25 30 35 40 50 60 70 80 Housing Color Yellow Gray Green Brown Orange Red Blue Tan Clear Meets SAE J1888 Typ. Voltage Drop at Rated Current (mV) 76 75 77 75 75 73 77 61 62 Rerating Factor (% Rated Current) 120 MAXI Fuse Table 115 110 105 100 95 90 85 80 75 70 -40 -20 0 20 40 60 80 100 120 140 Ambient Temperature (˚C) 13 The ATO Fuse was designed and patented by Littelfuse in 1976 and set the standard for automotive circuit protection. It features industry standard color coding to indicate amperage rating. 2A 3A 4A 5A 7.5A 10A 15A 20A 25A 30A 35A 40A 1A ATO® Blade Fuse 1000 TIME IN SECONDS 100 10 1 19.05 (.75") 0.1 5.08 (.20") 12.19 (.48") 0.01 6.35 (.25") 1 10 100 1000 CURRENT IN AMPERES 0.66 (.026") 4.064 (.16") 14.48 (.57") Time-Current Characteristics Current Rating % of Rating 110 ATO Fuse Table Housing Color 257001 257002 257003 257004 257005 25707.5 257010 257015 257020 257025 257030 257035 257040 1 2 3 4 5 7.5 10 15 20 25 30 35 40 Black Gray Violet Pink Tan Brown Red Blue Yellow Clear Green Blue-Green Orange 200 Typ. Voltage Drop at Rated Current (mV) 176 141 137 136 128 116 109 102 98 92 84 87 96 See page 32 for ATO Resistors, Diodes, and Shunts. 350 600 100 hrs 0.35 s 0.75 s 0.10 s 0.15 s 0.020 s 0.080 s 600 600 5 5 0.5 0.5 .1 .15 s s s s s s s s Interrupting Rating: 1000A @ 32 VDC Voltage Rating: 32 VDC Ambient Temp.: -40˚C to +105˚C ATO Fuse Temperature Rerating Curve 120 Rerating Factor (% Rated Current) Part Number Current Rating (A) 1-40A 1-2A 3-40A 1-2A 3-40A 1-2A 3-40A 1-30A 35-40A 135 Meets SAE J1284 Opening Time Minimum Maximum 115 110 105 100 95 90 85 80 75 70 -40 -20 0 20 40 60 80 100 120 140 Ambient Temperature (˚C) 14 Visit our web site at www.littelfuse.com The JCASE is a cartridge style fuse with female terminal design, providing both increased time delay and low voltage drop to protect high current circuits and handle inrush currents. The JCASE was designed and patented by Littelfuse. 20A 30A 40A 50A 60A JCASE® Cartridge Fuse 1000 TIME IN SECONDS 100 10 1 0.1 14.1 12.0 0.01 1 10 100 1000 CURRENT IN AMPERES 10000 TIME-CURRENT CHARACTERISTICS 27.0 24.4 % of Rating 18.7 12.1 100 135 200 350 600 10.0 1.0 5.5 See page 32 for JCASE Shunt — 1800 s 60 s 7s 1s Typ. Voltage Drop at Rated Current (mV) 106 101 91 87 88 87 110 Rerating Factor (% Rated Current) Housing Color Blue White Pink Green Red Yellow 100 hrs 60 s 4s 0.2 s 0.04 s JCASE Fuse Series Temperature Rerating Curve JCASE CARTRIDGE FUSE TABLE Part Number 495020 495025 495030 495040 495050 495060 Maximum Interrupting Rating: 1000A @ 32 VDC Voltage Rating: 32 VDC Insertion Force: 53N max. (12 lb.) Extraction Force: 9N min. (2 lb.) Ambient Temp: -40˚C to + 125˚C 6.7 Current Rating (A) 20 25 30 40 50 60 Opening Time Minimum 105 100 95 90 85 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 Ambient Temperature (°C) 15 30A 40A 50A 60A 70A 80A 100A 125A 150A 200A MIDI® Fuse 1000 The MIDI Fuse offers a bolt-on space saving fuse for high current wiring protection and provides time delay characteristics with “Diffusion Pill Technology”. The MIDI Fuse was designed and patented by Littelfuse, TIME IN SECONDS 100 10 1 0.1 41 0.01 10 100 12 1000 10000 CURRENT IN AMPERES TIME-CURRENT CHARACTERISTICS 16 5.5 30 8.0 (30-80A) 4 8.3 (100-200A) MIDI Fuse Table Part Number 498030 498040 498050 498060 498070 498080 498100 498125 498150* 498200* Current Rating (A) 30 40 50 60 70 80 100 125 150 200 Typ. Voltage Drop at Rated Current (mV) 65 65 65 68 70 58 60 71 77** 77** * Parts with asterik are short circuit protectors only. ** Voltage drop measurements for short circuit protectors are at 75% of rated current. 150-200 Max Min Max 100 hrs 100 hrs 4 hrs 90 s 5s 0.5 s 0.1 s 3600 s 100 s 3s 1s 1s .3 s 0.1 s 15 s 3s 1s MIDI Fuse Series Temperature Rerating Curve 120 115 110 105 100 95 90 85 80 75 70 -40 16 Min Interrupting Rating: 2,000A @ 32 VDC Voltage Rating: 32 VDC Ambient Temp.: -40˚C to +125˚C Rerating Factor (% Rated Current) 0.41 (30-80A) 0.63 (100-200A) 30-125 % of Rating 75 100 110 150 200 300 500 -20 0 20 40 60 80 Ambient Temperature (°C) 100 120 140 Visit our web site at www.littelfuse.com 40A 60A 80A 100A 125A 150A 175A 200A 225A 250A MEGA® Fuse 1000 The MEGA Fuse is designed for high current circuit protection up to 500 amperes with “Diffusion Pill Technology”, the MEGA Fuse also provides time delay characteristics. Designed and patented by Littelfuse, the MEGA Fuse is ideal for battery and alternator protection application and other heavy gauge cables requiring ultra-high current protection. TIME IN SECONDS 100 10 1 0.1 0.01 10 50.8 (2.0") 100 1000 10000 CURRENT IN AMPERES 8.64 (.34") TIME-CURRENT CHARACTERISTICS 19.05 (.75") 16.26 (.64") (1.15") 68.58 (2.70") 11.94 (.47") 1.02 (.04") 40-250A 10.67 (.42") 1.83 (.072") 300-500A Part Number 298040 298060 298080 298100 298125 298150 298175 298200 298225 298250 298300* 298350* 298400* 298450* 298500* Current Rating (A) 40 60 80 100 125 150 175 200 225 250 300 350 400 450 500 Typ. Voltage Drop at Rated Current (mV) 132 119 87 87 80 92 86 83 82 82 74** 68** 64** 60** 58** Min 300-500 Max Min Max 4 hrs 4 hrs 120 s 1s 0.3 s 0.1 s 1800 s 15 s 5s 1s 1s 0.3 s 15 s 5s Interrupting Rating: 2000A @ 32 VDC Voltage Rating: 32 VDC Ambient Temp: -40˚C to + 125˚C MEGA Fuse Series Temperature Rerating Curve 120 115 Rerating Factor (% Rated Current) MEGA FUSE TABLE 40-250 % of Rating 75 100 135 200 350 600 110 105 100 95 90 85 80 75 70 -40 -20 0 20 40 60 80 100 120 140 Ambient Temperature (°C) * Parts with asterik are short circuit protectors only. ** Voltage Drop measurements for short circuit protectors are at 75% of rated current 17 17 MINI® 42 Fuse The MINI 42 volt fuse rated at 58 volts DC was designed for use in 42volt systems yet maintains the same performance characteristics and terminal footprint as the standard Mini fuse. Because there are severe dangers involved with using a fuse designed for a 12-volt system in a 42-volt system, the unique rejection feature prevents fuses with a lower voltage rating (i.e. Standard MINI fuse rated at 32 volts DC) from being inserted into the circuit. In order for the rejection feature to function as intended, fuse box designers need to follow the recommended mating cavity guidelines in this section. RECOMMENDED MATING CAVITY 9.1 2.6 TIME-CURRENT CHARACTERISTICS DIMENSIONS (in mm) % of Rating 0.76 110 135 200 350 600 8.8 7.5 3.55 3.3 MIN 1.78 2.80 ±0.1 Opening Time Minimum Maximum 100 h .75 s .15 s .080 s .030 s — 600 s 5s .500 s .100 s INTERRUPTING RATINGS: 1000 amperes @ 58 VDC 8.1 REF 0.825 ±.035 BLADE CENTERS 10.9 ENVIRONMENTAL SPECIFICATIONS: Operating Temperature Range: -40˚C to +125˚C MINI 42 FUSE TABLE MINI Fuse Temperature Rerating Curve Current Rating (A) Housing Color 997002 997003 997004 997005 99707.5 997010 997015 997020 997025 997030 2 3 4 5 7.5 10 15 20 25 30 Grey Violet Pink Tan Brown Red Blue Yellow Clear Green 171 153 121 129 135 108 98 96 86 87 120 115 Rerating Factor (% Rated Current) Part Number Typ. Voltage Drop at Rated Current (mV) 110 105 100 95 90 85 80 75 70 -40 -20 0 20 40 60 80 100 120 140 Ambient Temperature (˚C) 18 Visit our web site at www.littelfuse.com MAXI® 42 Fuse The MAXI 42 volt fuse rated at 58 volts DC was designed for use in 42-volt systems yet maintains the same performance characteristics and terminal footprint as the standard Maxi fuse. Because there are severe dangers involved with using a fuse designed for a 12-volt system in a 42-volt system, the unique rejection feature prevents fuses with a lower voltage rating (i.e. Standard Maxi fuse rated at 32 volts DC) from being inserted into the circuit. In order for the rejection feature to function as intended, fuse box designers need to follow the recommended mating cavity guidelines in this section. RECOMMENDED MATING CAVITY 4.5 9.5 (Top View) 20 31 MIN. (Side View) 13.4 Time-Current Characteristics % of Rating DIMENSIONS (in mm) 135 29.21 200 350 21.60 22.15 MAX. 600 3.3 Opening Time Max/Min (s) 20A 25A 30A 35A 40A 50A 60A 70A 1800 1800 1800 1800 1800 1800 1800 1800 60 60 60 60 60 60 60 60 20 30 30 40 40 50 60 60 4 6 6 8 8 10 15 4 2 4 4 5 5 6 7 2 0.7 1 1 1.4 1.4 1.7 2 0.20 1 1 1 1 1 1 1 1 0.15 0.20 0.20 0.20 0.20 0.20 0.20 .1 80A 1800 60 60 4 2 0.20 1 .1 INTERRUPTING RATINGS: 12.70±0.38 1000 amperes @ 58 VDC 0.825±.035 ENVIRONMENTAL SPECIFICATIONS: Operating Temperature Range: -40˚C to +125˚C 8.00 8.51 MAXI Fuse Temperature Rerating Curve 17.37 Part Number Current Rating (A) Housing Color Typ. Voltage Drop at Rated Current (mV) 999020 999025 999030 999035 999040 999050 999060 999070 999080 20 25 30 35 40 50 60 70 80 Yellow Gray Green Brown Orange Red Blue Tan Clear 76 75 77 75 75 70 66 61 62 Rerating Factor (% Rated Current) 120 MAXI 42 FUSE TABLE 115 110 105 100 95 90 85 80 75 70 -40 -20 0 20 40 60 80 100 120 140 Ambient Temperature (˚C) 19 JCASE® 42 Fuse The JCASE 42 volt fuse rated at 58 volts DC was designed for use in 42-volt systems yet maintains the same performance characteristics and terminal footprint as the standard JCASE fuse. Because there are severe dangers involved with using a fuse designed for a 12-volt system in a 42-volt system, the unique rejection feature prevents fuses with a lower voltage rating (i.e. Standard JCASE fuse rated at 32 volts DC) from being inserted into the circuit. In order for the rejection feature to function as intended, fuse box designers need to follow the recommended mating cavity guidelines in this section. RECOMMENDED MATING CAVITY 6.30 12.6min. 17.8max. 9.50 12.4min. 10.3min. TIME CURRENT CHARACTERISTICS: DIMENSIONS (in mm) 12.00 14.10 Opening Time % of Rating 100 135 200 350 600 Min 100 hrs 60 s 4.00 s 0.20 s 0.04 s Max 1800 s 60.0 s 7.0 s 1.00 s 24.4 27.0 18.7 10.00 INTERRUPTING RATINGS: 1000 amperes @ 58 VDC ENVIRONMENTAL SPECIFICATIONS: 4.40 10.10 12.10 10.00 Operating Temperature Range: -40˚C to +125˚C 5.50 6.75 JCASE Fuse Series Temperature Rerating Curve 110 Part Number Current Rating (A) Housing Color 995020 995025 995030 995040 995050 995060 20 25 30 40 50 60 Blue White Pink Green Red Yellow Typ. Voltage Drop at Rated Current (mV) 106 101 91 87 88 87 Rerating Factor (% Rated Current) 1.00 JCASE 42 FUSE TABLE 105 100 95 90 85 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 Ambient Temperature (°C) 20 Visit our web site at www.littelfuse.com PAL™ Fuses Commonly found on many Japanese OEM applications. PAL Fuses are available in current ratings up to 120 amperes, with either female or bolt-on terminals. Part Number Current Rating (A) Housing Color 293020 293030 293040 293050 293060 20 30 40 50 60 Light Blue Pink Green Red Yellow 293830 293840 30 40 Pink Green 294030 294040 294050 294060 294070 294080 294100 294120 30 40 50 60 70 80 100 120 Pink Green Red Yellow Brown Black Blue White 295030 295040 295050 295060 295070 295080 295100 295120 30 40 50 60 70 80 100 120 Pink Green Red Yellow Brown Black Blue White 283030 283040 283050 283060 283070 283080 283100 283120 30 40 50 60 70 80 100 120 Pink Green Red Yellow Brown Black Blue White 293545 293565 293575 45 65 75 Red Black Grey 293525 293530 25 30 Brown Green (standard) 21 EV Fuses Littelfuse sets high standards of accuracy, consistent quality, reliability, and predictable performance for fuse design development. By using advanced metallurgical, polymer, and materials research, as well as mathematical modeling and computerized statistical analysis, Littelfuse engineers have developed a new EV fuse series designed to protect high voltage applications on electric vehicles such as air conditioning compressors, electric heaters and power steering, all of which are mechanically driven in a traditional vehicle design. EV use is expected to grow in the near future due to environmental concerns and zero emission requirements. As EV development continues, the Littelfuse EV design team will design state-of-the-art EV fuses to protect all the new electrical applications in electric vehicles. EV49 Series Littelfuse offers a variety of DC voltage fuses to meet EV applications (150-1000 VDC) as well as an array of fuseholders. Interrupting Rating: 200,000 amperes Ampere Range: 1 - 1,000 amperes Very Fast Acting: EV fuses may be used wherever extremely fast-acting, current limiting fuses with no time delay are required. KLKD Series EV45 Series CCEV Series EV45 Series L60030C-1CEV1 Holder 22 Visit our web site at www.littelfuse.com Automotive Electronics Littelfuse Electronics Products Littelfuse offers an extensive line of circuit protection products for automotive electronics applications. With the growing number of onboard electronics, automotive designers have more circuits to protect accessories such as radios, cassette and CD players, cellular phones and global positioning system (GPS) products, as well as basic electronic functions such as power seats, power windows and climate control. Littelfuse’s broad selection of electronics devices address the changing needs of electronics applications. In addition to traditional glass and ceramic fuses, Littelfuse provides several low-profile surface mount designs which facilitate automated installation. To solve space limitations in electronics applications, Littelfuse offers 1206 and 0603 chip sizes produced with its breakthrough thin film processing techniques which enable precise control of electrical characteristics in compact packages. Littelfuse Slo-Blo® Fuses feature time delay to accommodate the inrush currents of electric motor control circuits, and very fast acting performance characteristics are also available. For more detailed information, please contact your Littelfuse sales representative for a copy of the Littelfuse Electronic Designer’s Guide which contains all the necessary specifications for Littelfuse electronics products or visit our website at www.littelfuse.com. 30R Series Radial Lead Vmax 30VDC Ampere Range 0.90 – 9.0A ® ® 60R Series Radial Lead Vmax 60VDC Ampere Range 0.10 – 3.75A ® ® Surface Mount Fuses NEW SlimLine™ Lead-Free 1206 Very Fast-Acting Thin-Film Fuse 466 Series Over Current Protection Products Resettable PTCs 1206L Series .66 (.026") 3.15 mm (.124) Surface Mount Ihold (A) 0.20 0.25 0.35 0.50 0.75 1.10 1.50 Vmax (VDC) 15.0 15.0 6.0 6.0 6.0 6.0 6.0 H 1.52 (.060") 3.18 (.125") ® .56 (.022") 0.58 mm (.023) SlimLine™ 1206 ® ® Very Fast-Acting Thin-Film Fuse 433 Series VOLTAGE RANGE:32 – 125V AMPERE RANGE: 0.125 – 3.0A INTERRUPTING 0.125 – .375A RATINGS: 0.5 – 2A 2.5 – 3A 4 – 7A 4.47 mm (.176) Surface Mount Vmax (VDC) 15.0 13.2 6.0 6.0 6.0 6.0 6.0 6.0 .58 (.023") ® 1.65 mm (.064) 1812L Series Ihold (A) 0.50 0.75 1.10 1.25 1.50 1.60 2.00 2.60 VOLTAGE RANGE:24-125V AMPERE RANGE: 0.125 – 7.0A INTERRUPTING 0.125 – .375A 50A @ 125VAC/VDC RATINGS: 0.5 – 2A 50A @ 63VAC/VDC 2.5 – 3A 50A @ 32VAC/VDC 4 – 7A 35A @ 24VAC/VDC 260 50A @ 50A @ 50A @ 35A @ 125VAC/VDC 63VAC/VDC 32VAC/VDC 24VAC/VDC 3.15 mm (.124) .66 (.026") 1.52 (.060") 0.66 mm (.026) .58 (.023") ® ® P 3.18 (.125") ® .56 (.022") ® 23 Automotive Electronics Over Current Protection Products (Cont.) Overvoltage Suppression Products Surface Mount Fuses PulseGuard® Polymeric ESD SuppressorsPGB Series 1206 PGB1010603 Slo-Blo® Thin-Film Fuse 430 Series VOLTAGE RANGE:32 – 63V AMPERE RANGE: 0.5 – 3.0A INTERRUPTING 0.5 – 1.5A RATINGS: 2A 3A OPERATING VOLTAGE: 0-24VDC PEAK CURRENT: [email protected] CAPACITANCE: [email protected] LEAKAGE CURRENT: <1.0nA OFFSTATE 10MΩ RESISTANCE: CLAMPING: 150V,[email protected] LINES PROTECTED: 50A @ 63VAC/VDC 35A @ 63VAC/VDC 50A @ 32VAC/VDC 1.52 (.060") 1.14 (.045") ® ® 1-line 1.60 (0.063") 3.18 (.125") NEW 0.457 (0.018") 0.81 (0.032") SlimLine Lead-Free 0603 ™ 0.381 (0.015") Very Fast-Acting Thin-Film Fuse 467 Series PGB102ST23 VOLTAGE RANGE:32V AMPERE RANGE: 0.25 – 5.0A INTERRUPTING 0.25 – 1A RATINGS: 1.25 – 5A 50A @ 32VAC/VDC 35A @ 32VAC/VDC .305 (.012") .787 (.031") ® ® 1.60 (.063") .279 (.011") OPERATING VOLTAGE: 0-24VDC PEAK CURRENT: [email protected] CAPACITANCE: [email protected] LEAKAGE CURRENT: <1.0nA OFFSTATE 10MΩ RESISTANCE: CLAMPING: 150V,[email protected] LINES PROTECTED: 2-lines 2.24 (0.088") 0.66 (0.026") SlimLine™ 0603 2.032 (0.080") 2.997 (0.118") 0.76 (.030") Very Fast-Acting Thin-Film Fuse 434 Series VOLTAGE RANGE:32V AMPERE RANGE: 0.25 – 5.0A INTERRUPTING 0.25 – 1A RATINGS: 1.25 – 5A PGB1040805 50A @ 32VAC/VDC 35A @ 32VAC/VDC OPERATING VOLTAGE: 0-24VDC PEAK CURRENT: [email protected] CAPACITANCE: [email protected] LEAKAGE CURRENT: <1.0nA OFFSTATE 10MΩ RESISTANCE: CLAMPING: 150V,[email protected] LINES PROTECTED: .305 (.012") .787 (.031") 1.60 (.063") ® ® NEW .279 (.011") 4-lines 1.27 (0.050") SlimLine Lead-Free 0402 ™ 0.44 (0.037") Very Fast-Acting Thin-Film Fuse 435 Series 0.41 (0.016") + + 2.03 (0.080") 0.66 ( 026") VOLTAGE RANGE:24V AMPERE RANGE: 0.25 – 2.0A INTERRUPTING 035A @ 24 VDC RATINGS: 1.04 (.041") .30 (.012") .51 (.020") ® 24 ® Visit our web site at www.littelfuse.com Automotive Electronics Overvoltage Suppression Products (Cont.) Metal Oxide Varistors (MOV’s) MA Series ML Series OPERATING VOLTAGE: 4-264 VAC 13-365 VDC PEAK CURRENT: 40-100A PEAK ENERGY: 0.06-1.7J MOUNT/FORM FACTOR: Axial Leaded DISC SIZE: 3mm OPERATING VOLTAGE: 2.5-104 VAC 3.5-120 VDC PEAK CURRENT: 30-250A LEAKAGE CURRENT: <5µA PEAK ENERGY: 1-2.0J LINES PROTECTED: 1 CAPACITANCE: 40-6000pF PACKAGE SIZE: 0402-1210 RA Series MLE Series OPERATING VOLTAGE: 4-275 VAC 5.5-364 VDC PEAK CURRENT: 150-6,500A PEAK ENERGY: 0.4-140J MOUNT/FORM FACTOR: Packaged DISC SIZE: 8, 6, 22mm ® ® MLN Series ZA Series OPERATING VOLTAGE: 4-460 VAC 5.5-615 VDC PEAK CURRENT: 50-6,500A PEAK ENERGY: 0.1-52J MOUNT/FORM FACTOR: Radial Leaded DISC SIZE: 5, 7, 10, 14, 20mm ® OPERATING VOLTAGE: 0-18 VDC PEAK CURRENT: 20A LEAKAGE CURRENT: <10µA PEAK ENERGY: 0.5J LINES PROTECTED: 1 CAPACITANCE: 40-1700pF PACKAGE SIZE: 0402-1206 D V OPERATING VOLTAGE: 5.5-18 VDC PEAK CURRENT: 20A LEAKAGE CURRENT: <2µA PEAK ENERGY: 0.05J LINES PROTECTED: 4 CAPACITANCE: 45-430pF PACKAGE SIZE: 1206 E MULTILAYER VARISTORS (MLV’s) MHS Series OPERATING VOLTAGE: 0 – 42 VDC PEAK CURRENT: LEAKAGE CURRENT: PEAK ENERGY: LINES PROTECTED: CAPACITANCE: PACKAGE SIZE: N/A <5µA N/A 1 3, 12pF 0402, 0603 AUML Series OPERATING VOLTAGE: 18 VDC PEAK CURRENT: N/A LEAKAGE CURRENT: PEAK ENERGY: N/A LINES PROTECTED: 1 CAPACITANCE: 1206-2220 PACKAGE SIZE: CH Series OPERATING VOLTAGE: 14-275 VAC 18-369 VDC PEAK CURRENT: 250-500A PEAK ENERGY: 1-23J MOUNT/FORM FACTOR: Surface Mount DISC SIZE: N/A ® 25 Automotive Electronics Overvoltage Suppression Products (Cont.) Silicon Protection Arrays TVS Diodes NEW SPO5X Series Through-hole TVS Diode TVS Avalanche Diode SA, P4KE, P6KE, 1.5KE, 5KP, 15KP, FSLD, SLD Series OPERATING VOLTAGE: 0-5.5 VDC LEAKAGE CURRENT: <10µA LINES PROTECTED: 2,3,4,5,6 CAPACITANCE: 30pF PACKAGE SIZE: SC70, SOT23, SOT143, TSSOP-8, MSOP-8 MAX OPERATING VOLTAGE: 5.0 to 380.0 PEAK PULSE CURRENT: N/A FORM FACTOR: Axial leaded PEAK PULSE POWER 400W to 5kW ® Surface Mount TVS Diode SP72X Series OPERATING VOLTAGE: 0-30VDC LEAKAGE CURRENT: <20µA LINES PROTECTED: 4,6,14 CAPACITANCE: 3-5pF AGE SIZE: DIP, SOIC, SOT23 NEW P4SMA, SMAJ, 1.5SMC, SMCJ, SMBJ, P6SMBJ, 1KSMBJ Series MAX OPERATING VOLTAGE: 5.0 to 188.0 PEAK PULSE CURRENT: N/A FORM FACTOR: DO 214 AA PEAK PULSE POWER 600W to 1kW ® SPUSB1 Series NEW Gas Discharge Tubes Upstream USB Port Terminator with ESD suppression and EMI Filtering High Performance Gas Plasma TRIGGER OPERATING VOLTAGE: 5.5 VDC LEAKAGE CURRENT: <1µA LINES PROTECTED: 3 CAPACITANCE: 47pF AGE SIZE: SC70-6 PEAK PULSE CURRENT: 400A FORM FACTOR: 2 terminal axial & SMT NOM. DC BREAKOVER VOLTAGE 600-1000 26 Visit our web site at www.littelfuse.com NEW XT Series Fuseholders Customized “Quick Fix” Solutions For those times when additional circuit protection requirements are presented by unforeseen situations and the design is frozen, fuse block space is limited, or the vehicles are already on the road, Littelfuse can provide customized “Quick Fix” solutions, specially designed for your specific application when standard products cannot solve the problem individually. testing, manufacturing and packaging capabilities to meet all the circuit protection challenges faced by OEMs. Our ability to respond to emergency situations with quick turnaround times and high production volumes is unrivaled in the industry, and all our custom products conform to the same rigid quality, performance and safety standards applied to Littelfuse’s stock products. Littelfuse has the expertise and resources to develop any solution you need, using fuses, fuseholders, terminals and other Littelfuse products creatively and effectively. We have the design, quality For more information on customized “Quick Fix” solutions, contact your Littelfuse representative. MINI® Blade Fuse Splashproof In-Line Fuseholder The protective cover of the Splashproof Fuseholder permits use of MINI® Fuses in harsh environments. Specifications Body: Black Alcryn Thermoplastic Cover: Black Alcryn Thermoplastic Ambient Temp.: -10˚C to +80˚C Part Number FHM001 FHM002 Description #14AWG (2.0mm2) stranded black wire with terminals rated for 20A #12AWG (3.0mm2) stranded orange wire with terminals rated for 30A MINI® Blade Fuse Printed Circuit Board Mount Designed to hold the MINI® Fuse, the Printed Circuit Board Mount is an economical alternative for PCB circuit protection in a variety of applications. Specifications Terminals: Copper Alloy/Tin plated Body: Black Thermoplastic (UL94V0) Electrical: Recognized under the Components Program of Underwriters Laboratories for 15A and certified by CSA for 10A (32V) Ambient Temp.: -40˚C to +85˚C Mounting: Intended for soldering directly to 0.062 (1.57mm) printed circuit board Part Number 153007 153008 153009 Description Horizontal Mount Vertical Mount Single Unit or Stackable Unit (RH) Vertical Mount Stackable Unit 27 Fuseholders MAXI™ Fuse Splashproof Fuseholder Ideal for high amperage MAXI™ Fuse applications where a protective cover is required for harsh under-the-hood environments. Specifications Terminals: Copper Alloy/Tin Plated with integral stainless steel reinforcing spring Wire Seal: Silicon Rubber Body: Heat Stabilized Thermoplastic Cover: Transparent Thermoplastic with integral silicon seal Rated: 80A (Dependent on application - contact Littelfuse) Ambient Temp.: -40˚C to +105˚C Maxi Fuse Splashproof Holder for 20-70 Amp Quantity Required 1 1 2 2 Part Number 1520007Z 1520004Z 1520005Z 1520006Z 868-095 868-096 913-064 913-064-001 913-068 913-068-001 913-087 913-087-001 Description Cover with Intergal seal Body with Mounting Tabs (one tab is slotted) Body with Mounting Tabs Body without Mounting Tabs Blue Wire Seal for 1.5-4mm2 (14-12AWG) Wire Gray Wire Seal for 4-10mm2 (10-8AWG) Wire Single terminal 1.5-4mm2 (14-12AWG) Wire Reeled terminals 1.5-4mm2 (14-12AWG) Wire Single terminal 4-6mm2 (10AWG) Wire Reeled terminals 4-6mm2 (10AWG) Wire Single terminal 6-10mm2 (8AWG) Wire Reeled terminals 6-10mm2 (8AWG) Wire Maxi Fuse Splashproof Holder for 80 Amp Quantity Required 1 1 2 2 Part Number 1520007Z 1520008Z 1520009Z 868-096 913-088 913-088-001 Description Cover with Intergal seal Body with Mounting Tabs, 80 Amp Body without Mounting Tabs, 80 Amp Gray Wire Seal for 4-10mm2 (10-8AWG) Wire Single terminal 8mm2 (8AWG) Wire Reeled terminals 8mm2 (8AWG) Wire *It is recommended that cross linked polyethelene (GLX) insulated wire be used, as described in SAE J1128 (Type, FLY in DIN 76722) or equivalent. 28 Visit our web site at www.littelfuse.com Fuseholders MAXI™ Fuse In-Line Fuseholder The In-Line Fuseholder provides an efficient, simple installation method for MAXI™ Fuse applications. Specifications Terminal: Copper Alloy Body: Black Thermoplastic (UL94HB) Cover: Translucent Thermoplastic Ambient Temp.: -10˚C to +80˚C Maximum number of fuseblocks tied together is two for all ratings, up to and including 50A. Quantity Required Part Number 1 152001 152900 913-653 1 2 913-654 2 913-550 Description Fuseholder-Rated at 60A Cover Ring tongue terminal for 2.5-6mm2 (12-10AWG) wire* Ring tongue terminal for 5-10mm2 (10-8 AWG) wire* M5 x 8 Screw per DIN 7985-4.8 *It is recommended that cross linked polyethelene (GXL) insulated wire be used, as described in SAE J1128 (Type, FLY in DIN 76722) or equivalent. MAXI™ Fuse In-Line Fuseholder With Protective Cap Supplied with two 6” leads 6 gauge wire for up to 60 amp MAXI™ Fuse applications, this In-Line Fuseholder also provides a protective cover for harsh under-the-hood environments. Mounting hole also permits easy bulkhead installation. Part Number: MAH 1 ATO® Blade Fuse Splashproof In-Line Fuseholder The Splashproof Fuseholder provides a protective cover to permit the use of ATO® Fuses in harsh environments. Specifications Body: Black Alcryn Thermoplastic Cover: Black Alcryn Thermoplastic Ambient Temp.: -10˚C to +80˚C Part Number FHAC001 FHAC002 Description #16AWG (1.0mm2 ) stranded black wire with terminals rated for 20A #12AWG (3.0mm2 ) stranded orange wire with terminals rated for 30A 29 Fuseholders ATO® Blade Fuse In-Line Panel Mount Fuseholder The In-Line Panel Mount Fuseholder provides an easy and quick mounting alternative when specifying ATO® Fuses. Specifications Body: Black Heat Stabilized Thermoplastic (UL94V2) Terminals: Brass, Tin Plated - Snap lock into body Ambient Temp.: -40˚C to +85˚C Mounting: Capable of snap mounting into panel from rear. Fuseholder interlocks for multiple mountings. Part Number Assembled with Assembled with Fuse 8” Wire Loop8” Wire Loop- Amperage Unassembled No Fuse With Fuse Rating 155320U 155300 155303A 3 Terminals for #14AWG (2.0mm2 ) 155304A 4 #14AWG (2.0mm2 ) Terminals rated to 155305A 5 stranded wire 20A 15537.5A 7.5 marked “14” 155310A 10 155315A 15 155320A 20 155430U 155400 155425A 25 Terminals for #10AWG (5.0mm2 ) 155430A 30 #10AWG (5.0mm2 ) Terminals rated stranded wire to 30A marked “10” ATO® Blade Fuse In-Line Molded Fuseholder The Molded Fuseholder is a versatile fuseholder for in-line applications. Specifications Body: Black Thermoplastic Wire: PVC Ambient Temp.: -10˚C to +80˚C Part Number FHA 001 Description 20A Max-No fuse supplied FHA 003 With 3A fuse FHA 004 With 4A fuse FHA 005 With 5A fuse FHA 07.5 With 7.5A fuse FHA 010 With 10A fuse FHA 015 With 15A fuse FHA 020 With 20A fuse #16 AWG (1.0mm2 ) Stranded Black Wire Part Number Description FHA 002 30A Max-No fuse supplied FHA 025 With 25A fuse FHA 030 With 30A fuse #12 AWG (3.0mm2 ) Stranded Orange Wire ATO® Blade Fuse Terminal The ATO® Blade Fuse Terminal is a tin plated terminal for ATO Fuse mounting on printed circuit boards. Specifications Terminal: Brass/Tin Plated • Suitable for current levels up to 15A • First time fuse insertion force may approach 40lbs. (180N) Part Number: 100057 30 Visit our web site at www.littelfuse.com Fuseholders MEGA® Fuse Fuseholders Specifications Electrical: Use with MEGA Fuses from 40 to 500 amps Part No.: 2981000 Series Single holder 2982000 Series Dual holders 2983000 Series Triple holders Body: Glass Filled thermoplastic Body Color: Black Cover with Tether: Glass Filled Thermoplastic Cover Color: Black Ambient Temp.: -40˚C to +125˚C Fuse Mounting: M8 Threaded Stud and Hex Nuts or M6 Threaded Hex Nuts Cover Opening Positions: - 6 total - location optional Side Stackable Feature Holder Mounting Dimensions: Optional Torque Requirements: M8 Nut 12-18 Newton meters M6 Nut 8-14 Newton meters 2981000 Series* 87.2 LITTELFUSE MEGA 10.2 101.6 2982000 Series* 6.35 DIA 87.2 LITTELFUSE MEGA 38.2 LITTELFUSE MEGA 10.2 101.6 6.35 DIA MIDI Fuse Fuseholders ® Specifications Electrical: Use with MIDI Fuses from 30 to 200 amps Part No.: 498900 Series Body: Glass Filled Thermoplastic Body Color: Black Cover with Tether: Glass Filled Thermoplastic Cover Color: Black Ambient Temp.: -40˚C to +125˚C Fuse Mounting: M5 Threaded Stud and Hex Nuts Cover Opening Positions: Location Optional - 6 total Side Stackable Feature Holder Mounting Dimensions: Available with or without mounting tabs Torque Requirements: M5 Nut 4-5 Newton meters 498900 Series* 4.8 65.8 51.4 41.0 *Holder Part No. w/cover dependent on part locations/patterns. 31 Special Products ATO™ Resistor Part Number: 240100 Series ATO™ Diode Part Number: 240103 Specifications Operating Temp.: -20˚C to +85˚C Resistor Value: Optional Power Rating: 1/4 W Max Body Material: Thermoplastic Term. Material: C.R.S. (Ni/Zn Plated) Term. Retention: 25 N Specifications Operating Temp.: -40˚C to +85˚C Diode Rating: 1.0 A Max P.I.V.: Optional Body Material: Thermoplastic Term. Material: C.R.S. (Ni/Zn Plated) Term. Retention: 25 N MINI™ Resistor Part Number: 240100 Series Specifications Operating Temp.: -40˚C to +85˚C Resistor Value: Optional Power Rating: 1/4 Max Body Material: Thermoplastic Term. Material: C.R.S. (Ni/Zn Plated) Term. Retention: 25 N MINI™ Diode Part Number: 240113 Specifications Operating Temp.: -40˚C to +85˚C Diode Rating: 1.0 A Max P.I.V.: Optional Body Material: Thermoplastic Term. Material: C.R.S. (Ni/Zn Plated) Term. Retention: 25 N ATO™ Shunt Part Number: 240094 Specifications Operating Temp.: -40˚C to +125˚C Maximum Continuous Load Rating: 35 A Body Material: Thermoplastic (UL 94V0 Rated) Term. Material: Brass Tin Plated MINI™ Shunt Part Number: 297900 Specifications Operating Temp.: -40˚C to +125˚C Maximum Continuous Load Rating: 20 A Body Material: Thermoplastic (UL 94V0 Rated) Term. Material: Zinc Silver Plated JCASE™ Shunt Part Number: 495900 32 Specifications Operating Temp.: -40˚C to +125˚C Maximum Continuous Load Rating: 50 A Body Material: Nylon Term. Material: Copper Visit our web site at www.littelfuse.com Fuse Pullers Littelfuse offers a selection of fuse pullers for easy removal and replacement of ATO®, MINI®, and MAXI™ Blade Fuses. ATO and MINI Fuse Puller Specifications Material: Polyamide Color: White Part Numbers: 097021 32.89 MINI Fuse Puller Specifications Material: Polyamide Color: White Part Numbers: 097024 8.6 7.87 10.82 JCASE and MINI Fuse Puller Specifications Material: Polyamide Color: White Part Numbers: 097053 38.1 MAXI Fuse Puller Specifications Material: Polyamide Color: Green or White Part Numbers: 097026 Green 12.4 097027 White 18.8 28.5 Fuse Tester and Puller The Tester/Puller conveniently and easily tests ATO® and MINI® Blade Fuses either in or out of the fuse block. Indicator light on tester glows bright green when fuse is good. Fuse puller end allows for easy fuse removal and replacement. 24V maximum. 10.7 14.0 28.5 20.0 Littelfuse ® 11.9 55.0 Part Number: 097019 Tri-Puller™ Fuse Puller Tri-Puller™ Fuse Puller allows for easy fuse removal and replacement of Glass Fuses, Ceramic Type Fuses, ATO® and MINI® Blade Fuses. 79.7 13.8 BLADE GLASS Part Number: 097023 33 Catalogs & Support Materials Catalogs Littelfuse, Inc. produces a vast array of products serving numerous markets including electronics, aftermarket and power fuses. Catalogs for Littelfuse products are available upon your request. Please contact you local sales representative for copies. Technical Support Books Littelfuse, Inc. has published Fuses for Automotive Applications to share knowledge that we possess in a market with ever increasing demands for reliability and quality. 34 Visit our web site at www.littelfuse.com A History of Littelfuse Automotive Firsts For more than 75 years, Littelfuse has been the circuit protection manufacturer to achieve the automotive industry’s most significant accomplishments, beginning in 1927 by inventing electronic circuit protection technology with the first small fast-acting protective fuse. 1930 - Automotive fuse introduced by Littelfuse 1950 - Littelfuse develops design of industry’s first centralized under dash fuseblock 1976 - ATO® Blade Fuse revolutionizes automotive circuit protection 1986 - U.S. auto industry selects the MAXI™ Fuse to replace the commonly used high amp fusible wire and fusible links in under-the-hood electrical harnesses 1987 - Littelfuse expands high amp coverage with reliable new line of PAL™ Auto Links for complete Japanese coverage 1989 - MINI® Fuse introduced as compact version of ATO® Fuse to address the proliferation of circuits being added to new car designs 1991 - High amp protection MEGA® Fuse introduced as the first OE and Aftermarket fuse rated up to 250 amps 1993 - Littelfuse becomes the first circuit protection manufacturer to receive ISO 9000 certification 1994 - MIDI® compact bolt-down automotive fuse introduced for European high amp applications 1996 - Littelfuse is first circuit protection manufacturer to receive QS 9000 certification 1997 - JCASE® Fuse introduced as a high current, space saving, female terminated fuse 1997 - Littelfuse celebrates 70 years of quality circuit protection innovation 2001 - Cable Pro® Fuse introduced as an inline high current fuse to replace fusible links in underhood applications 2004- Low Profile JCASE Fuse introduced as a compact version of the JCASE Fuse 35 World Headquarters Littelfuse, Inc. 800 East Northwest Highway Des Plaines, IL 60016 Phone: (847) 824-1188 http://www.littelfuse.com Research and Manufacturing Facilities • • • • • • • • • Des Plaines, Illinois USA Piedras Negras, Mexico Suzhou, China Seoul, Korea Irving Texas, USA Lipa City, Philippines Matamoros, Mexico Dundalk, Ireland Swindon, United Kingdom Sales, Distribution and Engineering Facilities North America • Des Plaines, Illinois USA Phone: (800) 999-9445 (847) 824-1188 Fax: (847) 391-0459 • Irving, Texas, USA Phone: (972) 580-7777 Fax: (972) 550-1309 • Piedras Negras, Mexico Phone: (U.S. area code) (830) 758-1925/1569 Fax: (+52)-8-782-7315 • Brownsville, Texas, USA Central and South America • Sao Paulo, Brazil Phone: (+55) 11-3977-0909 Fax: (+55) 11-3976-6690 Asia/Pacific • Hong Kong, China Phone: (+85) 22-810-5099 Fax: (+85) 22-810-5500 • Singapore Phone: (+65) 6885-9111 Fax: (+65) 6885-9113 • Seoul, Korea Phone: (+82) 2-463-6073 Fax: (+82) 2-463-3273 • Yokohama, Japan Phone: (+81) 45-478-1088 Fax: (+81) 45-478-1089 Europe • Utrecht, The Netherlands Phone: (+31) 30-299-9900 Fax: (+31) 30-299-9800 • Munich, Germany Phone: (+49) 89-5527-6600 Fax: (+49) 89-5527-6699 Littelfuse, Inc. 800 East Northwest Highway Des Plaines, IL 60016 Phone: (847) 824-1188 Fax (847) 803-5364 Form No. OE101-D Printed in U.S.A.
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