On Friday, December 29, 2017 at 12:02:38 PM UTC-5, Fox's Mercantile wrote:
On 12/29/17 10:39 AM, David Farber wrote:
That being said, I think you were implying it's still better to use the
metal tabbed package and use insulating hardware which will improve the
thermal transfer. Is that correct?

Just a wild guess here...
But I suspect the epoxy coating may have less thermal resistance
than a mica washer with the bare metal tab.

--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com



Fullpack transistors generally have a much lower wattage rating than their metal backed counterparts for that very reason.