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Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 (626) 284-1704
www.riedon.com sales@riedon.com Revised: 201901_003
© Riedon, Inc.
PFC Series
Thick Film Power SMD Resistors
• D-PAK Foot Pattern
• Very Low Profile
• Resistances from 0.1 to 51k ohms
• Suitable for Current Sensing
• Power Rating to 25 Watts
• Resistance Tolerances to ±1%
• TCR to ±100ppm/°C
• Isolated Back Plate
Type PFC10
Power Rating with heatsink 125 Watts
Short Time Overload 235 Watts
Thermal Resistance Rthj-c 3.6° K/W
Resistance Range 0.1 - 51K Ohms E24+ (includes 2.5, 4.0, 5.0, 8.0, and 16)
Tolerances (others upon request) 1% / 5%
Temperature Coefficient 100 ppm/°K
Operating Temperature -55°C to 155°C
Max Operating Voltage
Capacitance 2.65 pF
Inductance 15 nH
Withstanding Voltage 1500 VAC
Insulation Resistance Over 1,000 MΩ
Resistor Material Thick Film
Moisture Sensitivity Level MSL-1
Mass 0.324 grams
Standard Packaging 500 pieces per 254 mm diameter reel within paper box.
Test Conditions Results
Load Life ±1% 90 min ON, 30 min OFF, 1000 hrs @ 25°C
Humidity ±1% 90-95% RH, 0.1W, 1000 hrs @ 40°C
Temperature Cycle ±0.25% -55°C for 30 min, +155°C for 30 min, 5 cycles
Solder Heat ±0.1% 350°C ±5°C for 3 seconds
Lead Solderability Over 95% of surface 230° ±5°C for 3 seconds
Vibration ±0.25% IEC60068-2-6
SPECIFICATIONS
Part Description: Part Type - Resistance - Tolerance
PFC10 10 Ohms 1%
Ordering Information
*P R
1 Power rating is 2.5 watt using a simple footprint and without heatsink
2 Overload rating is permissible for continuous duty with back solder pad temerature not exceeding 25°C
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Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 (626) 284-1704
www.riedon.com sales@riedon.com Revised: 201901_003
© Riedon, Inc.
PFC Series
Thick Film Power SMD Resistors
DIMENSIONS
Dimension mm tol. (±mm) inches tol. (±inches)
A 8.20 0.20 0.323 0.008
B 12.0 0.20 0.472 0.008
C 0.90 0.10 0.039 0.002
D 5.08 0.10 0.200 0.004
E 0.75 0.1 0.030 0.002
F 1.85 0.05 0.070 0.002
G 8.50 - 0.335 -
H 8.80 - 0.346 -
I 14.1 - 0.555 -
J 5.08 - 0.200 -
K 2.00 - 0.079 -
L 3.80 - 0.150 -
Note: Back solder pad is isolated from both pins.
CHIP CONSTRUCTION
ACH
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Solder Pad Layout
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Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 (626) 284-1704
www.riedon.com sales@riedon.com Revised: 201901_003
© Riedon, Inc.
PFC Series
Thick Film Power SMD Resistors
MOUNTING / DERATING
Copper insert improves thermal conductivity to heatsink.
Power ratings of 35 watts can be achieved through active
cooling of the heatsink. For more general information on
heatsinking please see our training module on heatsinking
by clicking here:
https://riedon.com/media/pdf-tech/PowerandHeatsink.pdf
Copper Insert Via-Holes
Power Rating Notes -
The PFC Series Resistors must be attached to a suitable heat-
sink. The maximum internal resistor temperature is 155°C.
To specify an appropriate heatsink use the following formula :
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 )
( * )
RP
T P R T
H
MAX R A
=- -
H
H
Power Derating Curve
-50 0 50 100 150 200
Heatsink Temperature (°C)
100
80
60
40
20
0
Power (%)
+25 °C
PFC10
+155 °C
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