UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - TO247 transistor collector-heatsink

Maarten · 14th Nov 2019, 1:17 am

The very good thermal contact isn't really obstructed by a thin layer of aluminium oxide on the heat sink, but the electrical contact is. If you can't find TO-218 devices from old stock or a second source manufacturer, I'd rather make some modifications.

14th Nov 2019, 1:17 am	#9
Maarten Dekatron Join Date: Dec 2007 Location: Haarlem, Netherlands Posts: 4,203	Re: TO247 transistor collector-heatsink The very good thermal contact isn't really obstructed by a thin layer of aluminium oxide on the heat sink, but the electrical contact is. If you can't find TO-218 devices from old stock or a second source manufacturer, I'd rather make some modifications.