We use 28-84 pin PLCCs delivered in tube packaging.  For us, coplanarity is
a rare problem and when it occurs it is usually a corner pin, fairly severe
and suggestive of out of tube handling problems.  I don't recall ever having
a run of problems.

> -----Original Message-----
> From: Cyker, Howard A (Howie) [SMTP:[log in to unmask]]
> Sent: Wednesday, July 26, 2000 1:08 PM
> To:   [log in to unmask]
> Subject:      Re: [TN] PLCC Coplanarity...  (or lack of)
>
> Mike,
>
> We have been and still are using PLCC devices ranging from 20 to 84 i/o.
> We
> occasionally see coplanarity issues, and they are usually systematic in
> nature.  That is, they are usually the same lead(s), same date code(s) on
> the same device.  Another more frequent source of PLCC coplanarity is from
> a
> programming or burn-in socket.  We have also seen leads bent during the
> tube
> packaging process, but most of our PLCC's are packaged in tape & reel.
> For
> the most part, we do not see PLCC coplanarity problems as a regular
> occurrence.
>
> > Howard A. Cyker
> > Lucent Technologies
> > Email [log in to unmask]
> > Phone 978-960-2964
> > Fax 978-960-1187
> >
> >
> > ----------
> > From:         Mike Lang[SMTP:[log in to unmask]]
> > Reply To:     TechNet E-Mail Forum.;Mike Lang
> > Sent:         Wednesday, July 26, 2000 2:42 PM
> > To:   [log in to unmask]
> > Subject:      [TN] PLCC Coplanarity...  (or lack of)
> >
> > I got very little response to my coplanarity post, which leads me to
> > believe that either no one else is having the problem, or no one else is
> > using PLCC's, or...
> >
> > Is anyone out there using PLCC's without the coplanarity problems?
> >
> >
> >
> >
> > Thanks,
> >
> > Lang
> > x5046
> >
>
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