Shame on IPC and others that know this not to make it clearer to everyone.
Personally I think it is kinda scary to have a photo as a spec!
Patty
Patricia J. Goldman
PPG Industries, Inc.
412-492-5516
[log in to unmask]
-----Original Message-----
From: Franklin D Asbell [mailto:[log in to unmask]]
Sent: Thursday, May 25, 2000 3:37 PM
To: [log in to unmask]
Subject: Re: [TN] Searching for IPC "marking" spec
~covering my head~
I learned something, thank you
Franklin
"Goldman, Patricia J." wrote:
> Please note - A600 is NOT A SPEC. It is an Acceptability GUIDELINE,
> basically a collection of photos to show good, bad, in-between.
> IPC-6012 is the SPEC.
>
> Patty
> Patricia J. Goldman
> PPG Industries, Inc.
> 412-492-5516
> [log in to unmask]
>
> -----Original Message-----
> From: Timothy Reeves [mailto:[log in to unmask]]
> Sent: Thursday, May 25, 2000 3:02 PM
> To: [log in to unmask]
> Subject: Re: [TN] Searching for IPC "marking" spec
>
> Tom, Franklin:
> IPC-A-600E (sec. 2.8.3) did say "no ink on surface mount lands" and
> "acceptable on non-surface mount lands as long as it doesn't extend into
the
> part mounting hole or reduce min. annular ring".
> IPC-A-600F is the same for non SM lands but no longer says anything about
> ink on SM lands.
> IPC-6012A (sec. 3.3.5) does say marking shall not cover areas of lands to
be
> soldered. That's the most restrictive and probably the spec we should
> endeavor to meet.
> So, I guess it can be as close as .0000 inches away from a land!
> Tim Reeves
>
> > ----------
> > From: Franklin D Asbell
> > Sent: Thursday, May 25, 2000 9:07
> > Subject: Re: Searching for IPC "marking" spec
> >
> > IPC-A-600 F should have what you're looking for, although I don't
> > beleive in that document there is criteria for that
> >
> >
> > Franklin
> >
> >
> >
> > "Hybiske, Tom" wrote:
> >
> > >
> > >
> > >
> > > Was wonder if anyone can point me to the IPC spec which specifically
> > > states how close silk screen marking on a printed wiring board can be
> > > to land areas?
> > >
> > > Thanks,
> > > Tom Hybiske
> > > General Atronics Corporation
> > > Wyndmoor, PA
> >
>
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