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To220 heat sink calculator.
Once we have this very important calculated figure we can use it in various inequalities shown.
How does the heat sink calculator work.
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.
The heat sink size calculator first calculates the optimum spacing between the fins to achieve maximum convection cooling.
To determine if you need a heat sink for your voltage regulator there are some very simple parameters that you need to compare.
Power components have a maximum junction temperature which must not be exceeded to prevent damage to the device.
This tool is designed to calculate junction temperature of an electronic device typically power devices given four parameters.
The thermal resistance of the heat sink and temperature of the power source is calculated.
θ ja total is a value that we have to calculate which is easy to do and shown in the following sections of this article however for the time being assume you have it.
Calculate the thermal resistance and pressure drop of a plate fin heat sink and study how individual parameters affect the heat sink performance.
Heat sink calculator is a software tool for designing analysing and optimizing heat sink performance.
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The user can choose between natural or forced convection and or radiation for the modes of heat transfer.
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Devices are encapsulated in packages which have different levels of thermal resistance.
The heat source is assumed to cover the entire base of the heat sink.
A reference link has been placed below the calculator for further reading.
The maximum ambient temperature the device s junction to package thermal resistance the thermal resistance of the heat sink and the power applied.
In our experience it generally estimates the overall heat sink volume within 15 of a final design.
Heat sink temperature calculator.
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The width of the heat sink is then calculated based on the number of fins required to dissipate the heat from the heat sink.