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July 2014

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Subject:
From:
Stephen Gregory <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, [log in to unmask]
Date:
Thu, 17 Jul 2014 11:55:01 -0600
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Hi All!

I'm trying to deal with all the smoke that's here in Boise today, it's probably the worst smoke I've ever been in. The jet stream has made a dip and is carrying all the smoke from the fires in Washington, Oregon, and the fire north of us in Boise county right into the Treasure Valley and it's all packing up against the mountains to the west of us (cough, cough..)

Anyways, I have a question about a little custom inductor from Vishay Hirel that we have here. It appears that we have a certain datecode batch of these where the insulation on the part of the wire that gets soldered into the board wasn't stripped and tinned high enough, and now when we try to install them into the board the insulation prevents wetting at the top of the board and we have insulation in the solder joint which of course is a defect:

http://stevezeva.homestead.com/Vishay_Inductor.jpg

The picture is of one that we pulled out of a board, and you can see that the insulation goes down past the shoulders and into what is supposed to be the solderable area. 

I think I know the answer to my next question, but I'll ask it anyway. Is there any clever way to remove that insulation without damaging the inductor?



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