Convert Degree Celsius per watt to Degree Celsius per milliwatt
Convert Degree Celsius per watt (°C/W) to Degree Celsius per milliwatt (°C/mW) instantly and accurately.
Conversion Formula
°C/mW = °C/W × 0.001
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 Celsius per milliwatt
The degree Celsius per milliwatt (°C/mW) equals exactly 1000 K/W since 1 mW = 10⁻³ W and 1 °C = 1 K. Widely used in low-power semiconductor datasheets for characterising junction-to-ambient resistance: small-signal transistors, LEDs, photodiodes, and SMD resistors typically show RθJA of 50-500 °C/mW. A device at 200 °C/mW dissipating 5 mW rises 1 °C. 1 °C/mW = 1000 K/W = 1 kK/W.
Quick Reference Table
| Degree Celsius per watt (°C/W) | Degree Celsius per milliwatt (°C/mW) |
|---|---|
| 1 °C/W | 0.001 °C/mW |
| 2 °C/W | 0.002 °C/mW |
| 5 °C/W | 0.005 °C/mW |
| 10 °C/W | 0.01 °C/mW |
| 25 °C/W | 0.025 °C/mW |
| 50 °C/W | 0.05 °C/mW |
| 100 °C/W | 0.1 °C/mW |