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

McMurdo · 14th Nov 2019, 12:08 am

the reason I ask is to do with replacing an old TO218 package with a newer TO247.

See excerpt from a product change notice from ON Semi below:

The hybrid mounting used the collector pin onto a pcb for a voltage reference and the tab mounted to a live heatsink assembly for the power.
I want to avoid having to modify the product if it's not necessary by putting links between the pin and the heatsink.

14th Nov 2019, 12:08 am	#8
McMurdo Dekatron Join Date: Jun 2009 Location: Staffordshire Moorlands, UK. Posts: 5,274	Re: TO247 transistor collector-heatsink the reason I ask is to do with replacing an old TO218 package with a newer TO247. See excerpt from a product change notice from ON Semi below: The hybrid mounting used the collector pin onto a pcb for a voltage reference and the tab mounted to a live heatsink assembly for the power. I want to avoid having to modify the product if it's not necessary by putting links between the pin and the heatsink. Attached Thumbnails __________________ Kevin