Delete comment from: Ken Shirriff's blog
Alex Suykov said...
"The power transistor in the middle of the board is round, lacking the metal flanges of American power transistors" — the flanges were on an optional part that goes over the transistor when it's mounted on a heatsink. Crappy illustration: https://forum.cxem.net/uploads/monthly_2017_09/IMG_20170925_172935.thumb.jpg.504072965c0c45a1a4a98f4dd3e22144.jpg
On this board, there's a thin soldered-in ring in place of the flanged part.
There were Soviet transistors with TO-3 style built-in flanges, too, like КТ838.
Jan 21, 2020, 10:46:39 AM