Hi, I am trying to repair a RF Amplifer with defective Output Stage. The original FET installed is SML D1010UK.
Top FET is the original Piece, Middle One is from Ebay (Chinese Supplier), Bottom is from Ebay (UK Supplier).
The Middle one is definitely fake, the size is smaller, the tabs are shorter and the biggest giveaway seller immediately refunded, the instant I mentioned the difference is the physical form.
The Bottom one I am not very sure , I bought 2 of these, it came in a nice ESD box. They look like original. But inspecting closer, I am thinking this is fake as well.
The markings wears off when wiped with IPA, the markings are not straight, I have been told, when components are marked by manufacturer, very strict quality control is done on marking, so the markings will be always repeatable and straight.
Another red flag is between the two FET Die Encapsulation, its not sitting well, its sitting in a bit of an angle and raised up.
Whats everyone's opinion on the bottom FET?
Reason why I did not buy from reputable seller---> The MOQ was 50 Pieces :'(