Calculadora de Dimensionamiento de Disipador — Fórmula
## Heat Sink Sizing
### Formula
**θsa_max = (Tj_max - T_ambient) / P - θjc - θcs**
This gives the maximum thermal resistance the heat sink can have. Select a heat sink rated at or below this value. Forced air cooling reduces effective θsa.
### Formula
**θsa_max = (Tj_max - T_ambient) / P - θjc - θcs**
This gives the maximum thermal resistance the heat sink can have. Select a heat sink rated at or below this value. Forced air cooling reduces effective θsa.
Ejemplo Resuelto
10 W device, Tj_max = 125C, theta_jc = 2, theta_cs = 0.5, ambient = 40C.
- Thermal budget = (125 - 40) / 10 = 8.5 C/W
- Used = 2 + 0.5 = 2.5 C/W
- Max theta_sa = 8.5 - 2.5 = 6.0 C/W