Heat Sink Calculator Excel

The maximum ambient temperature the device s junction to package thermal resistance the thermal resistance of the heat sink and the power applied.

Heat sink calculator excel.

This tool is designed to calculate junction temperature of an electronic device typically power devices given four parameters. A fin n ed heat sink temperature distribution can be determined given heat sources. Heat sink sizing calculations in order to calculate the heat transfer characteristics of the heat sink the convection coefficient h must be calculated. Et heat sink v1 0 this module is an excel com add in.

The convection heat dissipation q c1 from area a 1 the external side surfaces of the heat sink shown figure 2 is first. Values for l and h are first chosen based on your heat sink design constraints. 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. 7 for air at stp pr 707. The heat sink calculator is easy to use enter the parameters except the one you want to calculate and then press calculate see example below. Fin spacing height and thickness.

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. Heat transfer design and engineering. Fins are used to increase heat transfer area and provide a cooling effect. Heat sink calculator is a tool for designing analysing and optimizing heat sink performance contact us today for custom heatsink solutions.

The heat sink size calculator first calculates the optimum spacing between the fins to achieve maximum convection cooling. Steady state or transient solutions are available for forced are natural convection. Heat sink convection with fins calculator. The heat source is assumed to cover the entire base of the heat sink.

However if h a p k is greater than 1 00 the fins will insulate and prevent heat flow. The width of the heat sink is then calculated based on the number of fins required to dissipate the heat from the heat sink. It has the following features. In our experience it generally estimates the overall heat sink volume within 15 of a final design.

How does the heat sink calculator work. The heat sink calculator is very useful when you are choosing power transistors heat sink etc.