OOPS!!!  Fingers typing faster than brain thinking!!

Correction:
It's true that IPC-A-610 revision "B" didn't address single sided
(unsupported hole) boards.
Try IPC-A-610 revision "C" dated January 2000, starting on page 6-17.

Pete


-----Original Message-----
From: Timothy Reeves [mailto:[log in to unmask]]
Sent: Friday, June 16, 2000 12:44 PM
To: [log in to unmask]
Subject: Re: [TN] Single sided PWB


IPC-A-600 is now on Rev. F (November 1999). Rev C is dated March 1978. The
earliest I have is Rev D (August 1989).
The only thing I can find in IPC-A-600F regarding this problem is section
2.10.4 - Annular Ring - Unsupported holes.
Unfortunately, the inside of the annulus is not specifically addressed.
Tim Reeves

-----Original Message-----
From: Phillips, Peter (NM05) [mailto:[log in to unmask]]
Sent: Friday, June 16, 2000 8:05 AM
Subject: Re: Single sided PWB


It's true that IPC-A-600 revision "B" didn't address single sided
(unsupported hole) boards.
Try IPC-A-600 revision "C" dated January 2000, starting on page 6-17.

                            Honeywell
Peter A. Phillips, Sustaining Engineer
Manufacturing Engineering
Home and Building Controls
8500 Bluewater Road N.W.
Albuquerque, NM 87121-1958
Pho     505-831-7509
Fax     505-836-4834
[log in to unmask]

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-----Original Message-----
From: Scott B. Westheimer [mailto:[log in to unmask]]
Sent: Thursday, June 15, 2000 8:31 PM
To: [log in to unmask]
Subject: [TN] Single sided PWB


I am looking for acceptable criteria for finished single sided PWC. IPC-600
only seems to cover double sided and multilayer. We have some single sided
boards with copper that was etch back away from the hole about 2 mils. The
boards pass wave solder but I need to make sure that they are acceptable.

Regards

Scott Westheimer

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