Read Section 1.1. It's pretty clear to me?
Rick
GTC
>-----Original Message-----
>From: Goldman, Patricia J. [SMTP:[log in to unmask]]
>Sent: Thursday, May 25, 2000 1:41 PM
>To: [log in to unmask]
>Subject: Re: [TN] Searching for IPC "marking" spec
>
>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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