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Transistor Tear Down and Compare - Counterfeit Parts Exposed!!!
Counterfeit eBay TO-3 Transistor Teardown
WARNING!! - FAKE 2SC1945 & MRF497 TRANSISTORS.
2N3055 Counterfeit Transistors / Fake Transistors
FAKE NEC & MITSUBISHI RF TRANSISTORS.
Beware of fake 2N3055 !
The real truth about Chinese fake semi conductors
#311 All Transistors Faked on AliExpress?
Counterfeit parts in Aerospace Mechanical Machining Industries Per AS 9100:2016 Rev D
Are my eBay Toshiba transistors counterfeit?
2N3055 Power Transistor Test
BC639 & BC640 from Aliexpress, fake or not?