Panasonic LK-T Relays Switch User manual

LK-T
SLIM POWER RELAY
WITH HIGH INRUSH
CURRENT CAPABILITY
TV-8 CERTIFIED
FEATURES
11.0
.433
24.0
.945
LK-T RELAYS
1. High inrush current capability
1) Operating load capability:
inrush 118 A, steady 8 A
2) UL/C-UL TV-8 approved
2. High insulation resistance
1) Creepage distance and clearances
between contact and coil: Min. 6 mm .236
inch (In compliance with IEC65)
2) Surge withstand voltage between
contact and coil: 10,000 V or more
25.0
.984
3. High noise immunity realized by the
card separation structure between
contact and coil
4. Conforms to the various safety
standards
UL, C-UL, TÜV, and SEMKO approved
SPECIFICATIONS
Contact
Characteristics
Arrangement
1 Form A
Initial contact resistance
(By voltage drop 6 V DC 1 A)
Max. 100 mΩ
Contact material
AgSnO2 type
Nominal switching
capacity
Rating
(resistive load)
Max. switching power
1,385 V A
Max. switching voltage
277 V AC
Initial *2
breakdown
voltage
Min. switching capacity
(Reference value)
10
Electrical (at 20 cpm)
(at rated load)
105
Between open
contacts
1,000 Vrms for 1 min.
Between contact
and coil
4,000 Vrms for 1 min.
6
Max. 15ms (at 20°C 68°F)
Release time (without diode)*4
(at nominal voltage)
Max. 5ms (at 20°C 68°F)
Temperature rise (at 70°C)
Coil
Nominal operating power
250 mW
#1 This value can change due to the switching frequency, environmental conditions,
and desired reliability level, therefore it is recommended to check this with the
actual load.
Remarks
*1 Measurement at same location as “Initial breakdown voltage” section.
*2 Detection current: 10mA
*3 Wave is standard shock voltage of ±1.2 × 50μs according to JEC-212-1981
*4 Excluding contact bounce time.
*5 Half-wave pulse of sine wave: 11 ms; detection time: 10 μs
*6 Half-wave pulse of sine wave: 6 ms
*7 Detection time: 10 μs
*8 The upper operation ambient temperature limit is the maximum temperature that
can satisfy the coil temperature rise value. Refer to 1. Usage, transport and
storage conditions in NOTES on page 3.
TYPICAL
APPLICATIONS
• Audio visual equipment
• Flat TVs and audio equipment, etc.
• Office equipment
• Home appliances
ds_61113_0004_en_lkt: 091008J
10,000 V
Operate time*
(at nominal voltage)
4
100 mA, 5 V DC
Mechanical (at 180 cpm)
Min. 1,000 MΩ (at 500 V DC)
Initial surge voltage between contact
and coil*3
8 A (120V AC)
#1
20 cpm (at rated load)
Initial insulation resistance*1
5 A 277 V AC
Max. switching current
Expected life
(min. operations)
Max. operating speed
Shock
resistance
Vibration
resistance
Max. 35°C with nominal coil
voltage and at 5 A contact
carrying current
(resistance method)
Functional*5
200 m/s2{approx. 20 G}
Destructive*6
1,000 m/s2{approx. 100 G}
Functional*7
10 to 55Hz
at double amplitude of 1.5mm
Destructive
10 to 55Hz
at double amplitude of 1.5mm
Conditions for operation,
transport and storage*8
(Not freezing and
condensing at low
temperature)
Ambient
temp.
–40°C to +70°C
–40°F to +158°F
Humidity
5 to 85% R.H.
Air
pressure
86 to 106 kPa
Unit weight
Approx. 12 g .42 oz
ORDERING INFORMATION
Ex. LKT
1a
F
12V
Contact arrangement
Protective construction
Coil voltage(DC)
1a: 1 Form A
F: Flux-resistant type
5, 9, 12, 24V
UL/C-UL, TÜV, SEMKO, TV-8 approved type is standard.
Notes: 1. Standard packing Carton: 100 pcs. Case: 500 pcs.
2. 3 V, 6 V, and 18 V DC types are also available. Please consult us for details.
1
LK-T
TYPES AND COIL DATA (at 20°C 68°F)
Part No.
Nominal voltage,
V DC
Pick-up voltage,
V DC (max.)
(Initial)
Drop-out
voltage,
V DC (min.)
(Initial)
Coil resistance,
Ω (±10%)
Nominal
operating
current, mA
(±10%)
Maximum
allowable
voltage, V DC
(at 20°C 68°F)
LKT1aF-5V
5
(Initial) 3.5
(Initial) 0.5
100
50
250
6.5
LKT1aF-9V
9
(Initial) 6.3
(Initial) 0.9
324
27.8
250
11.7
LKT1aF-12V
12
(Initial) 8.4
(Initial) 1.2
576
20.8
250
15.6
LKT1aF-24V
24
(Initial) 16.8
(Initial) 2.4
2,304
10.4
250
31.2
Nominal
operating power,
mW
DIMENSIONS
mm inch
PC board pattern (Bottom view)
2-0.9 dia.
2-.035 dia.
2-1.3 dia.
2-.051 dia.
16.5
.650
Max. 25.0
.984
7.5
.295
0.5
.020
20.0
.787
0.5 dia.
.020 dia.
1.65
.065
4
.157
0.3
.012
Max. 24.0
.945
16.5
.650
Tolerance: ±0.1 ±.004
0.4
.016
Schematic (Bottom view)
Max. 11.0
.433
1.0
.039
Dimension:
Max. 1mm .039 inch:
1 to 3mm .039 to .118 inch:
Min. 3mm .118 inch:
7.5
.295
20.0
.787
General tolerance
±0.1 ±.004
±0.2 ±.008
±0.3 ±.012
REFERENCE DATA
1. Max. switching power (AC resistive load)
2. Coil temperature rise
3. Ambient temperature characteristics and coil
applied voltage
Sample: LKT1aF-12V, 6 pcs.
Point measured: coil inside
Contact current: 0 A, 5A
30
100
500
10
5
1
Coil applied voltage, %V
Temperature rise, °C
Contact current, A
20°C 5A
20°C 0A
25
70°C 5A
70°C 0A
20
15
10
400
Allowable ambient temperatures
against % coil voltages
(max. inside the coil temperature
set as 115°C 239°F)
300
Carrying current: 5A
200
Coil & contact no carrying current
100
5
Pick-up voltage
0
100
Contact voltage, V
100
Contact
welding
detection
and Miscontacting
detection
circuit
10
20
30
40
50
60
70
80
Ambient temperature, °C
Change of contact resistance
50
12
Circuit:
45
10
Pick-up voltage
Max.
x
8
Min.
6
4
Drop-out voltage
Max.
x
Min.
2
0
0
5
No. of operations, ×10
2
0
0
120
Change of pick-up and drop-out voltage
Sample: LKT1aF-12V, 6 pcs.
Operation frequency: 20 times/min.
(ON/OFF = 1.5s: 1.5s)
Ambient temperature: 20°C 68°F
12V DC
80
Coil applied voltage, %V
4-(1). Electrical life test
(5 A 277 V AC, resistive load)
277V AC
0
10
4
Contact resistance, mΩ
10
Pick-up and drop-out voltage, V
0
40
35
30
25
Max.
20
15
x
10
Min.
5
0
0
5
No. of operations, ×10
10
4
ds_61113_0004_en_lkt: 091008J
LK-T
Change of pick-up and drop-out voltage
Change of contact resistance
12
Pick-up and drop-out voltage, V
Sample: LKT1aF-12V, 6 pcs.
• Overload test
Load: 12 A 120 V AC (60 Hz),
Inductive load (cosφ = 0.75)
Operation frequency: 6 times/min
(ON : OFF = 1 s : 9 s)
No. of operations: 50 ope.
• Endurance test
Load: 8A 120 V AC (960 W lamp load),
(Inrush: 118 A)
Operation frequency: 1 times/min
(ON: OFF = 1 s: 59 s)
No. of operations: 25,000 ope.
50
45
10
8
Pick-up voltage
Max.
x
Min.
6
4
Drop-out voltage
Max.
x
Min.
2
0
0
25
No. of operations, ×10
3
Contact resistance, mΩ
4-(2). Electrical life test
(UL508 TV-8 rating test)
40
35
30
25
20
15
Max.
x
Min.
10
5
0
0
25
No. of operations, ×103
NOTES
1. Usage, transport and storage
conditions
1) Temperature:
–40 to +70°C –40 to +158°F
2) Humidity: 5 to 85% RH
(Avoid freezing and condensation.)
The humidity range varies with the
temperature. Use within the range
indicated in the graph below.
3) Atmospheric pressure: 86 to 106 kPa
Temperature and humidity range for
usage, transport, and storage
Humidity, %RH
85
Tolerance range
(Avoid freezing
when used at
temperatures lower
than 0°C 32°F)
5
-40
-40
(Avoid
condensation
when used at
temperatures higher
than 0°C 32°F)
0
+32
Temperature, °C °F
70
+158
4) Condensation
Condensation forms when there is a
sudden change in temperature under
high temperature and high humidity
conditions. Condensation will cause
deterioration of the relay insulation.
5) Freezing
Condensation or other moisture may
freeze on the relay when the
temperatures is lower than 0°C 32°F.
This causes problems such as sticking of
movable parts or operational time lags.
6) Low temperature, low humidity
environments
The plastic becomes brittle if the relay is
exposed to a low temperature, low
humidity environment for long periods of
time.
2. Solder and cleaning conditions
1) Please obey the following conditions
when soldering automatically.
(1) Preheating: Within 120°C 248°F
(solder surface terminal portion) and
within 120 seconds
(2) Soldering iron: 260°C±5°C
500°F±41°F (solder temperature) and
within 6 seconds (soldering time)
2) Since this is not a sealed type relay, do
not clean it as is. Also, be careful not to
allow flux to overflow above the PC board
or enter the inside of the relay.
3. Certification
1) This relay is UL and C-UL certified
(File No. E43149).
UL, C-UL rating: TV-8
2) This relay is certified by TUV as an
electromagnetic relay that complies with
VDE0435 (File No. B040413461035).
(1) TUV rating: 8A, 250 V to COSφ = 1.0
(2) The terminals of this relay can only be
connected with solder.
(3) This relay is certified by SEMKO (File
No. 400968).
SEMKO rating: 3/100A 250 V AC, 5/40A
250 V AC
4. Others
1) For precautions regarding use and
explanations of technical terminology,
please refer to “Relay Technical
Information”.
2) To ensure good operation, please keep
the voltage on the coil ends to ±5% (at
20°C 68°F) of the rated coil operation
voltage. Also, please be aware that the
pick-up voltage and drop-out voltage may
change depending on the temperature
and conditions of use.
3) Keep the ripple rate of the nominal coil
voltage below 5%.
4) The cycle lifetime is defined under the
standard test condition specified in the
JIS* C 5442 standard (temperature 15 to
35°C 59 to 95°F, humidity 25 to 75%).
Check this with the real device as it is
affected by coil driving circuit, load type,
activation frequency, activation
phase,ambient conditions and other
factors.
Also, be especially careful of loads such
as those listed below.
(1) When used for AC load-operating and
the operating phase is synchronous.
Rocking and fusing can easily occur due
to contact shifting.
(2) High-frequency load-operating
When high-frequency opening and
closing of the relay is performed with a
load that causes arcs at the contacts,
nitrogen and oxygen in the air is fused by
the arc energy and HNO3 is formed. This
can corrode metal materials.
Three countermeasures for these are
listed here.
• Incorporate an arc-extinguishing circuit.
• Lower the operating frequency
• Lower the ambient humidity
5) Heat, smoke, and even a fire may
occur if the relay is used in conditions
outside of the allowable ranges for the
coil ratings, contact ratings, operating
cycle lifetime, and other specifications.
Therefore, do not use the relay if these
ratings are exceeded.
6) If the relay has been dropped, the
appearance and characteristics should
always be checked before use.
7) Incorrect wiring may cause
unexpected events or the generation of
heat or flames.
For Cautions for Use, see Relay Technical Information.
ds_61113_0004_en_lkt: 091008J
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