Testing an AF117 transistor
The tin whisker problem of AF117 and similar transistors is well-documented. Out of interest I decided to test a couple of AF117s in my parts box. I am uncertain if they are new or used. Attached are the results from testing one on my component tester, which identifies it as a PNP transistor. I did not find any shorts between B, C and E and the shield on additional testing. Could it be assumed that this is a 'good' transistor (although could succumb to tin whisker disease anytime in the future ?)
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