You have described a defect condition from IPC-A-620 the new wire and cable
harness acceptability standard.

> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]]On Behalf Of Forselles, Tom
> Sent: Wednesday, April 24, 2002 12:27 PM
> To: [log in to unmask]
> Subject: [TN] Insulation in the crimp contact area
>
>
> I am trying to find an IPC reference standard for a situatuation I believe
> is a problem.  I have some 24AWG wires coming from a cooling fan assembly
> where the wires are terminated with crimped male contacts that slip into a
> plastic housing for a typical pin-and-socket arrangement.  The
> outer part of
> the crimp looks good where the wire is nicely crimped around the wire
> insulation, but the inner part of the crimp appears marginal in that there
> is consistently at least some insulation running into the contact
> area.  The
> result is a crimp that does not appear to be fully formed around
> the actual
> conductor.  Closest IPC reference I found was 610C, 4.2.3.2 for mechanical
> assembly, hardware mounting, threaded fasteners - where there is to be "no
> insulation in the contact area".  Could anyone give me a more specific
> standard reference or perhaps educate me if this is an actual problem?
> Responses to the list or private e-mail is greatly appreciated.  Thank you
> in advance.
> Tom Forselles
> [log in to unmask]
> Phone: 805.783.6048
> FAX: 805-541-5088
>
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