Convert Kelvin per watt to Degree Celsius per milliwatt
Convert Kelvin per watt (K/W) to Degree Celsius per milliwatt (°C/mW) instantly and accurately.
Conversion Formula
°C/mW = K/W × 0.001
About Kelvin per watt
The kelvin per watt (K/W) is the SI coherent unit for thermal resistance, defined as the temperature rise (K) per unit of steady-state power dissipation (W). Used universally in electronic component datasheets (junction-to-ambient, junction-to-case), heat sink ratings, and thermal circuit analysis. A CPU heatsink at 0.3 K/W raises temperature 30 K per 100 W. 1 K/W = 1 °C/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
| Kelvin per watt (K/W) | Degree Celsius per milliwatt (°C/mW) |
|---|---|
| 1 K/W | 0.001 °C/mW |
| 2 K/W | 0.002 °C/mW |
| 5 K/W | 0.005 °C/mW |
| 10 K/W | 0.01 °C/mW |
| 25 K/W | 0.025 °C/mW |
| 50 K/W | 0.05 °C/mW |
| 100 K/W | 0.1 °C/mW |