Heat Sink Calculator Led

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. In our experience it generally estimates the overall heat sink volume within 15 of a final design. You could use the results as guidance in selecting a heat sink for multiple leds but this will not consider factors such as the distance between each led total wattage of multiple leds etc.

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The basics to do that is to understand the scheme at the right each part of the design adds up some heat due to individual thermal resistances of each.

Heat sink calculator led.

A reference link has been placed below the calculator for further reading. Thermal calculation calculation of the required led cooler thermal resistance rth. Calculate the required led heat sink. This compact heat sink is 60mm in diameter and 50mm tall and it has a thermal resistance θs of 4 0 c w.

As an example we take a led cob model which has a nominal forward current if of 450ma and a maximal forward current of 900ma. 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. In this document we show how to calculate the required thermal resistance of the led cooler. Note that the calculator we provide can only determine the c w rating of a heat sink for a single led.

For example let s say we are selecting a heat sink for an osram prevaled core z3 1100 led cob module which is 1100 lumens. Suitable candidates include the mechatronix lpf6050 zhc.

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