Re: 7603 Strange HV Need Help


Ed Breya
 

In a nutshell, there is something seriously galvanically and/or metallurgically wrong with those TI IC leads with Ag plating. Over time, and depending on the environment, the bond between the Ag plating and whatever is underneath disintegrates, literally disconnecting the outside surface from the leadframe material, causing loss of contact. I have even seen this in leads that were soldered to the board clean through.


Ed

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