Mosfets and heatsinks question

Thread Starter

Rufus Chucklebutty

Joined Mar 23, 2019
I have to add heatsinks to two rows of mosfets 13N50 and 20100CT on a battery charger, firstly is the hole at the top on these for a screw to bolt to a heatsink and second can they all be in contact with the same heatsink or do they need to be electrically isolated from each other?

You have guessed correctly the I know nothing about electronics and it's not my trade.


Joined Mar 14, 2008
You have two choices:
  1. Add thermal pad isolators between the transistors and the heatsink.
  2. Use two isolated heatsinks, one for each transistor.