Electronics > Projects, Designs, and Technical Stuff
copper pins to increase PCB heat sink capability?
coppercone2:
Do you think that getting copper pins (probobly hardened ones) and sticking them into vias around a transistor would help significantly with power dissipation? I am thinking about it, if there is room for convection around the PCB, maybe it would make sense to put a pin into every other hole and solder them in, so there is a draft going through the VIAS and getting heat off of the pins.
Have you ever seen anything like this?
OM222O:
the vias will be way too small for any sort of "draft". the pins however can be usefull, but not as much as a proper heat sink and will set you back a lot more if you're not pressing them into a sheet metal which I assume you are not. EVGA has done this and called it pin fins but they are huge and still do very little cooling.
A commercial pin fin heatsink:
Evga pin fins:
coromonadalix:
Normally any added mass / surface area will help dissipate more, you can have small, big fins, long short ones etc... you have copper mesh in cpu heat sink tubings ... even saw a small form pc with someking of very thick mesh as a heatsink on the case ?? but i did not saw it come into production ?
Your ides seems good tests should be done ? copper needles, copper nails something like that ?
I did saw on qfn32 packages somekind of a look a like copper screw thermally glued, it helped dissipate heat.
SilverSolder:
The idea sounds pretty cool! ( :-) )
Definitely worth a test.
filssavi:
The problem exotic assembly techniques such as that type of pin placement is that unless the volumes are actually huge (see EVGA) there is little to no chance to find someone willing to do it at a reasonable cost
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