Re: Possible faulty AF127?
The encapsulation "can" construction is not the same for the AF11x and AF12x series. AF11x are contained in a tin plated rather thick steel can whereas AF12x are in what appears to be a plain mild steel thinner can, so AF12x should not suffer from the tin whisker problem.
There are of course other failure mechanisms that could affect either series equally given that the semiconductor within the can is the same.
John
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