✔ Resistor Heat Sink Calculator

Resistor Heat Sink Calculator

- May 11, 2019

The single side is attached to a heatsink and the heat generated is absorbed. Simple metal heat sinks.

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When a resistor is attached directly to the heat sink the heat generated by the resistor conducts to the metal plate and then into the air as a result of convection.

Resistor heat sink calculator. This tool is designed to calculate junction temperature of an electronic device typically power devices given four parameters. This calculator uses the calculation methodology explained in the blog posts how to design a flat plate heat sink and performance of a led flat plate heat sink in multiple orientations the heat sink thermal resistance and temperature of the heat source are calculated by the calculator. The maximum ambient temperature the devices junction to package thermal resistance the thermal resistance of the heat sink and the power applied.

The calculator will let you know if the maximum junction temperature could be exceeded for a given power and likewise will tell you the maximum power that the device can. The heat sink size calculator is based on a well established equation for estimating heat sink volume during the early stages of heat sink design. Once the heat is absorbed it is released into the air through the heatsink.

In our experience it generally estimates the overall heat sink volume within 15 of a final design. Much smaller than standard parts of the same wattage heatsinkable resistors release their heat in one plane. This calculator and tutorial computes the junction temperature of a power electronics device given the maximum ambient temperature and the heat sink thermal resistance.

How does the heat sink calculator work. A simple practical heat sink is an aluminum or steel plate as shown in figure 1. Must calculate the thermal resistance of a heat sink to keep the junction temperature under 140 degrees celsius at 30 watt power dissipation when using irfz44 mosfet in a maximum of 60 degrees ambient temperature.

Heat sink thermal resistance calculator use this online calculator to determine the heat sink thermal resistance required to maintain a specified component junction temperature. Heat sink calculator calculates thermal properties of a power device mounted on a heat sink example 1. Calculate the thermal resistance and pressure drop of a plate fin heat sink and study how individual parameters affect the heat sink performance.

A reference link has been placed below the calculator for further reading.