We make all of our mods and some standard point-to-point wiring with that type of magnet wire, and we also manufacture our own coils with that type of wire.
For small quantities, where the tag ends are stripped manually, we use C.K. wire strippers. They have ESD and non-ESD adjustable strippers and they work really well for magnet wire in that they can be set such that they never nick the wires. You can buy them from Allspec, Stanley, Mouser, etc. Be sure to select the gauge range for the wire size you have.
http://www.youtube.com/watch?v=UHZv8-BeHUo


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory
Sent: Thursday, July 17, 2014 12:46 PM
To: [log in to unmask]
Subject: [TN] Removing insulation from inductor wire..

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? The picture makes this inductor look huge, but it's not, it's maybe .250" in diameter, and the wire is a pretty small gage too.

I tried dipping it first in a lead-free tinning pot set at 600 C., no luck, then 700 C., no luck, then 800 C., and no luck. I was able to darken the insulation and melt the yellow tape that wraps the inductor, but that's about it. I'm think that the only way to remove this insulation is mechanically...which will be a trick because the inductor and wire is pretty small.

Hate to scrap these things because they are long lead custom inductors. But we can't use them like they are....

Steve

-- 


This email and any attachments are only for use by the intended
recipient(s) and may contain legally privileged, confidential, proprietary or otherwise private information. Any unauthorized use, reproduction, dissemination, distribution or other disclosure of the contents of this e-mail or its attachments is strictly prohibited. If you have received this email in error, please notify the sender immediately and delete the original. 


______________________________________________________________________
This email has been scanned by the Symantec Email Security.cloud service.
For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________

______________________________________________________________________
This email has been scanned by the Symantec Email Security.cloud service.
For more information please contact helpdesk at x2960 or [log in to unmask] 
______________________________________________________________________