datasheet for PFS35

PFS35
Power SMD Film Resistors
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TO-263 Housing (D-Pak)
Resistances from 0.01Ohm to 51kOhms
Power Rating to 35Watt
Resistance Tolerances to ±1%
TCR to ±50ppm/°C
Load Stability to 1%
SolderRelowSecureat260°C/20s
Isolated Back Plate
SPECIFICATIONS
Type
PFS35
Terminals
2
Power Rating (with heatsink)
35 W
( 2W on Simple Solder Pad )
Thermal Resistance Rthj-c
Resistance Range
Tolerances (others upon request)
Temperature Coeficient
3.3 K/W
0.01 to 0.099Ohms
0.1 to 9.9Ohms
10 to 51KOhms
5%
1% / 5%
1%
±250 ppm/°C
±100 ppm/°C
±50 ppm/°C
Operating Temperature
-55°C to 155°C
Max Operating Voltage
500V
Voltage Proof
2.0kV DC
Insulation Resistance
Over 1,000 Megohm
Resistor Material
Thin Film
Load Life
±1%
90 min ON, 30 min OFF, 1000 hrs @ 25C
Humidity
±1%
90-95% RH, 0.1W, 1000 hrs @ 40C
Temperature Cycle
±0.25%
-55C for 30 min, +155C for 30 min, 5 cycles
Solder Heat
±0.1%
350C ±5C for 3 seconds
Vibration
±0.25%
IEC60068-2-6
Relow soldering
lead-free soldering 260°C / 20s
Ordering Information
Part Description: Part Type - Resistance - Tolerance
PFS35 10 Ohms 1%
Riedon Inc.
300 Cypress Avenue
Alhambra CA 91801
www.riedon.com
(626) 284-9901
(626) 284-1704
07/13
PFS35
Power SMD Film Resistors
SPECIFICATIONS (continued)
Derating
Power (% from
nominal power)
Power Rating Notes The PFS35 Series Resistors must be attached to a suitable
heatsink. The maximum internal resistor temperature is 175°C.
To specify an appropriate heatsink use the following formula :
120
100
80
RqH = TMAX - ( P x RqR ) - TA
P
60
40
20
Where:
0
25
50
85
100
115
130
145
155
Temperature of the backplate(°C)
RqH = Thermal Resistance of Heatsink ( K/W )
RqR = Thermal Resistance of Resistor ( K/W )
TMAX = Maximum Temperature of Resistor
TA = Ambient Temperature of Heatsink ( °C )
P = Power Through Resistor ( W )
Dimensions
Riedon Inc.
Dimension
mm
tol.
(±mm)
inches
tol.
(±inches)
A
10.3
0.2
0.405
0.008
B
10.1
0.2
0.400
0.008
C
15.3
1.0
4.54
0.04
D
5.08
0.1
0.200
0.004
E
1.5
0.05
0.060
0.002
F
0.75
0.05
0.030
0.002
G
2.2
0.2
0.087
0.008
H
4.5
0.2
0.177
0.008
J
0.5
0.05
0.020
0.002
K
2.5
0.5
0.10
0.02
L
5.0
1.0
0.20
0.04
300 Cypress Avenue
Note:
Back plate is isolated from both pins.
Alhambra CA 91801
www.riedon.com
(626) 284-9901
(626) 284-1704
07/13
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