Electronics > Projects, Designs, and Technical Stuff
Adding heatsink with electrical isolation
nctnico:
--- Quote from: David Hess on December 12, 2019, 04:47:02 pm ---
--- Quote from: nctnico on December 12, 2019, 01:32:06 pm ---Another option is to drill a (countersunk) hole in the flat bottom of the case and have a slot in the PCB so the TO220 can be mounted with the legs up onto the solder side. That way you can slide the PCB in and use a screw to fix the TO220 to the case (with whatever isolator you want to use).
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That works but long term reliability will be compromised if too much tension and compression force is applied along the length of the leads.
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For clarity: I meant bending the leads and soldering them into through-holes but I see this wasn't clear from my text. I'm aware bends are required to have some form of strain relief from thermal cycles.
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