10x TO-3 Ceramic Mica Transistor Insulator Pads – 2N3055 / KD503 / UA7805

Working on some power transistors like the 2N3055, KD503, or UA7805?

You're gonna need these.

This pack gives you 10 TO-3 ceramic/mica insulator pads.

They're the classic 2-pin type, designed for through-hole mounting in a TO-3 package.

They handle heat like a champ—rated up to 500°C.

Made in Bulgaria, unbranded but solid quality.

Keeps your transistors isolated from the heatsink, no shorts.

New old stock type stuff, ready for your amp or power supply project.