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Electronics => Beginners => Topic started by: amateur_25 on April 10, 2012, 06:54:09 pm

Title: heatsink footprint for pcb using eagle
Post by: amateur_25 on April 10, 2012, 06:54:09 pm

I'm looking for some advice on how to create my own footprint for this aluminium heatsink I stripped out of a psu. How can I ensure the footprint allows perfect alignment of the regulator with the mounting holes on the heatsink? It has 150A4Y number which doesn't seem to return any results on google.

Title: Re: heatsink footprint for pcb using eagle
Post by: mariush on April 10, 2012, 07:39:25 pm

It's probably a custom heatsink, made for that specific power supply manufacturer.

I'd say get a caliper and start measuring the distances between the holes, the diameter of the holes, where those support pin are relative to the corners... 

As a tip, you can also use some warm wax (from candles) to make a small rectangle in which you can press the heatsink just as if the wax was the PCB. Afterwards, you can use the impressions in the wax to determine the distances.