Convert Degree Celsius per watt to Second-degree Fahrenheit per BTU
Convert Degree Celsius per watt (°C/W) to Second-degree Fahrenheit per BTU (s·°F/BTU) instantly and accurately.
Conversion Formula
s·°F/BTU = °C/W × 1899.100535
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 Second-degree Fahrenheit per BTU
The second-degree Fahrenheit per BTU (s·°F/BTU) equals (5/9)/1055.05585262 K/W ≈ 5.265 × 10⁻⁴ K/W. Used in US aerospace and nuclear engineering where thermal transient analyses express power as BTU/s and temperature in °F, e.g. rocket engine heat rejection and reactor coolant loop calculations. 1 s·°F/BTU ≈ 5.265 × 10⁻⁴ K/W.
Quick Reference Table
| Degree Celsius per watt (°C/W) | Second-degree Fahrenheit per BTU (s·°F/BTU) |
|---|---|
| 1 °C/W | 1899.1 s·°F/BTU |
| 2 °C/W | 3798.2 s·°F/BTU |
| 5 °C/W | 9495.5 s·°F/BTU |
| 10 °C/W | 18991 s·°F/BTU |
| 25 °C/W | 47477.5 s·°F/BTU |
| 50 °C/W | 94955 s·°F/BTU |
| 100 °C/W | 189910 s·°F/BTU |