Do I need a heatsink?

Did you expect sympathy?

Not at all! If I don't get it from my wife then I'll hardly get it from you lot!!

My 5yo daughter did show some concern, before skipping off into the distance! :slight_smile:

though the time I was pushing a 556 timer into some card stock and it seated in my finger hurt much worse

Ouch! Were you mono-stable or astable afterward!? :wink:

G.