Convert Degree Celsius per watt to Degree Fahrenheit per watt
Convert Degree Celsius per watt (°C/W) to Degree Fahrenheit per watt (°F/W) instantly and accurately.
Conversion Formula
°F/W = °C/W × 1.8
About Degree Celsius per watt
The degree Celsius per watt (°C/W) equals exactly 1 K/W since temperature intervals 1 °C = 1 K. It is the dominant notation in semiconductor, LED, and power electronics datasheets worldwide. Thermal resistance values such as RθJA (junction-to-ambient) and RθJC (junction-to-case) are almost universally quoted in °C/W. A package at 50 °C/W dissipating 2 W yields ΔT = 100 °C. 1 °C/W = 1 K/W.
About Degree Fahrenheit per watt
The degree Fahrenheit per watt (°F/W) equals exactly 5/9 K/W ≈ 0.5556 K/W. It appears in US power electronics datasheets and legacy JEDEC thermal specifications where junction-to-case resistance is reported in °F/W rather than °C/W or K/W. A device rated 5 °F/W has R = 5 × 5/9 ≈ 2.78 K/W. 1 °F/W = 5/9 K/W.
Quick Reference Table
| Degree Celsius per watt (°C/W) | Degree Fahrenheit per watt (°F/W) |
|---|---|
| 1 °C/W | 1.8 °F/W |
| 2 °C/W | 3.6 °F/W |
| 5 °C/W | 9 °F/W |
| 10 °C/W | 18 °F/W |
| 25 °C/W | 45 °F/W |
| 50 °C/W | 90 °F/W |
| 100 °C/W | 180 °F/W |