Heat to board

[shon35us]

Does anyone have a good suggestion ok diy guide on how to mount the heat sink to the PCB?

[mjf]

hello.
what kind of heatsink is it?
greetings...........

[shon35us]

3 by 5 inch

[mjf]

hello.
if you want to fix transistors or opamps you will drill some holes in the heatsink i think.
so you may fix the heatsink with screws on the board.perhaps you can use self tapping (or self drilling) screws,or use a steel cavity fixing for the screws..............
annother method is fixing with glue but i do not like it very much because the glue " gets dry" and crumbles after a longer time.......
greetings...........

[shon35us]

Because I was thinking about using an L bracket:

http://www.mcmaster.com/#1556a24/=gdx6g

and self-tapping screws:

http://www.mcmaster.com/#90087a192/=gdy1j

I hoping to find a guide on the form or the web that would help show thing like this

[raypalmer]

I wouldn't use self-tapping... The heads can torque off the shaft and then you've got yourself a difficult-to-remove problem on your lovely heatsink. Run down to a tool shop and buy a drill bit, corresponding tap and a tapping tool (if you don't have a good-quality powerdrill with clutch).

The upside to this investment is that the tap will more than likely prove itself useful time and again.

[Iain McNeill]

I've seen spring clips used as well but on smaller sinks. You might have to screw the clips to your heatsink anyway