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%
Low Ohm Values for Current Sense Applications
Exceptional Pulse Performance
Solder Reflow Secure at 260°C / 20s
Isolated Back Plate
SPECIFICATIONS
Type
PFS35
Terminals
2
Terminal Finish
Tin Plated Copper
Power Rating (with heatsink)
35 W
( 2W on Simple Solder Pad )
Thermal Resistance Rthj-c
Resistance Range
Tolerances (others upon request)
Temperature Coefficient
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 175°C
Max Operating Voltage
500V
Inductance
8.4 nH
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
Flammability
UL94V-0
Reflow soldering
lead-free soldering 260°C / 20s (2 reflow cycles maximum)
Moisture Sensitivity Level
MSL-1
Mass
1.5g
Ordering Information
Part Description: Part Type - Resistance - Tolerance
PFS35 10 Ohms 1%
Riedon Inc.
© Riedon, Inc.
300 Cypress Avenue Alhambra CA 91801
(626) 284-9901
www.riedon.com
sales@riedon.com
(626) 284-1704
Revised: 201908_004
PFS35
Power SMD Film Resistors
Power Derating
Power Rating Notes -
% Power
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 :
+25 °C
100
80
RHH =
60
40
20
+175 °C
0
-50
0
50
100
150
Flange Temperature (C)
200
TMAX - (P * RHR) - TA
P
Where: 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
Back plate is isolated from both pins.
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
1.2
0.602
0.047
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
Riedon Inc.
© Riedon, Inc.
Pulse peak power (W)
100k
10k
1k
400W
100
35W
10
10n
100n
1u
10u
100u 1m 10m 100m
Pulse width (seconds)
1
10
100
Tenative continuous-pulse allowance at duty 0.01. Load life test will be necessary
in actual equipment, because curve may be changed by resistance, repetition, duty
and perating temperature.
300 Cypress Avenue Alhambra CA 91801
(626) 284-9901
www.riedon.com
sales@riedon.com
(626) 284-1704
Revised: 201908_004
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