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found this on youtube on how to test new final


I wish there were a simple way to test them to know if they're legitimate. Several years back I bought what was left of a closed down cb shop. In the parts bins were about 100 or more mitsubishi 1969 transistors. They look legit and have no reason to believe they aren't but I don't know it for sure. So far they've just been in a drawer and could be worth something!
 
Simple way? Yeah. The width of the package.

A real Mitsu 1969 is skinnier than the standard TO-220 metal-tab transistor package. Can't remember the exact dimensions.

But it's visibly thinner than every TO-220 part. Easy to see in the thumbnail pic above. The skinny gray one on the left is the real part.

A fake won't be.

73
 

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