The more strands in the conductor, the more flexible it is. The drawback is
the higher strands will wick more when soldered unless you use an
anti-wicking tool to heat sink where the wire and the insulation meet.

Donald Durett
Engineering Manager
Astrolab Inc.
4 Powderhorn Drive
Warren, NJ  07059-5105

Tel:  732-560-3800
Fax: 732-560-9570


-----Original Message-----
From: Genny Gibbard [mailto:[log in to unmask]]
Sent: Wednesday, April 23, 2003 5:46 PM
To: [log in to unmask]
Subject: Re: [TN] wire coatings

Thanks for the info so far.  Upon closer examination of the part numbers we
have in house, I noticed that the Teflon coated wire was a 19 strand type,
while the PVC coated wire was a 7 strand type.  Would these finer strands
also make the wire much more susceptible to breakage with a little wiggling
(the initial problem)?  Do you think that if I brought in a 7 strand teflon
coated wire that it might solve some of the breakage problems?

Thanks.

-----Original Message-----
From: Genny Gibbard [mailto:[log in to unmask]]


Do you remember my question regarding the midplane assembly?
Turns out that there was a reel of mislabelled wire in house, and a whole
bunch of assembly has been done using a PVC coated wire, instead of the
teflon coated wire I spec'd.  Apparently the wire in question is obsolete,
but they like using it better than the teflon, and want to continue to use
that.
I don't know much about wire coatings - what is the difference between these
two coating types, and when would you want to or not want to use them.  I
need to decide whether we need to force them to change out the wiring
they've already done.
Sigh...
Thanks for your help in advance.

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