Taking a look at a suspicious TO-3 2N3055 BJT transistor acquired from an eBay seller for cheap that is allegedly manufactured by STmicroelectronics.

00:00 – TO-3 Transistors and looking for a 2N3055
02:45 – Transistors from eBay
03:39 –Suspicious paint
05:43 – Teardown
06:47 – Die analysis
07:54 – Thermal Image

REF: WT-YT-V-13