Peltier Heat Sink Resistance Calculator

Thermal Management & Cooling Design: Determine maximum allowable heat sink thermal resistance ($R_{th,hs}$), hot-side dissipation ($Q_h$), and junction temperatures.

Thermal Loads & Ambient Conditions

Heat Load to Cool $Q_c$ (W):

TEC Electric Power $P_{el}$ (W):

Ambient Air Temp $T_{amb}$ (°C):

Max Allowed Hot Temp $T_{h,max}$ (°C): Keep ≤50-60°C for high cooling delta

Thermal Interface TIM (°C/W): Quality thermal paste: 0.08-0.15 °C/W

Cooling Method Recommendation:

Required Heatsink Specification

Total Rejection ($Q_h$)

-- W

Max Total $R_{th}$

-- °C/W

Required Sink ($R_{hs}$)

-- °C/W

Sink Temp Rise ($\Delta T_{hs}$)

-- °C

Cooling Feasibility: --

Estimated Min Fan Airflow: -- CFM (for forced air heatsinks)

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Peltier Heat Sink Resistance Calculator

Thermal Loads & Ambient Conditions

Required Heatsink Specification

Frequently Asked Questions