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5ppm/°C 5W precision TNP10P series
5ppm/°C 5W precision TNP10P series
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120W - 600W edge wound resistor KR series
120W - 600W edge wound resistor KR series
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MegaSurge inrush current limiters MS series
MegaSurge inrush current limiters MS series
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1mR - 3mR 3W metal strip CS30 series
1mR - 3mR 3W metal strip CS30 series
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RTD probe with pocket and insert RPL8-P
RTD probe with pocket and insert RPL8-P
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Applcation Notes

Heatsink size calculator

This calculator calculates the heatsink size for given resistor power and ambient conditions.

This calculator assumes 1°C/W for the themal resistance resistor body to heatsink case.

Power dissipated in resistor
Watts
Maximum resistance temp.
°C
Maximum ambient temp.
°C
Thermal resistance element to case
°C/W
Required themal resistance of external heatsink
°C/W

* Typical values of the thermal resistance element to case for heatsink mount transistor package resistors are: MP915 - 8.3°C/W, MP925 - 5°C/W, MP930 - 4.2°C/W, MP930 - 4.2°C/W, MP9100 - 1.5°C/W, PBH - 4°C/W, PBV - 3°C/W, AH2 - 3°C/W.