Dennis,
I don't recall from previous years conversations, do you do fab formal
drawings? I have dealt with Asia a fair amount during my career and have never
had a similar problem. However I do formal fab drawings on anything that is not
purely prototype. These may not be fully 100% what IPC asks for in a fab
drawing but it covers all the required details. In my drill charts I make it
adequately clear which symbols are NPTHs. I do not even allow the simple "Y" or
"N", I change it to a full Yes or NO in the Plated column. Let alone previously
with Pads the PTH indication was simply " " or "*". What does * mean?
The other detail I put in the drill chart with Protel outputs is the
tool number from the actual drill file. Then there is absolutely no excuse for
missing the NPTHs in the drill file.
Sincerely,
Brad Velander
Senior PCB Designer
Northern Airborne Technology
1925 Kirschner Rd.,
Kelowna, BC, V1Y 4N7.
tel (250) 763-2329 ext. 225
fax (250) 762-3374
-----Original Message-----
From: Dennis Saputelli [mailto:[EMAIL PROTECTED]
Sent: April 5, 2005 7:21 PM
To: Protel EDA Discussion List
Subject: Re: [PEDA] NTPs and aisan bd shops
anyone else have issues with asian bd houses not spotting the NTPs ?
i use a few shops and have never had trouble, but now with a new one the
holes came plated (no pads), wasn't a big deal in this case
i heard some noises about this on the DXP list to the effect that some
shops expect a separate drill file for the NTPs
i sent the DRR but i guess they didn't read it or understand it
one time on a different job they held a job because i had a trace too
close to a pad (at least as observed looking at a single layer)
i explained that it was fine because they were all on the same net
(joined on a different layer)
they couldn't understand what i was saying
after a series of emails the last one from them was
PLEASE ANSWER - RESEND - RESEND
ENGINEERING WANT TO KNOW
OPEN OR SHORT
OPEN OR SHORT ????
i replied simply
SHORT
and all was well
Dennis Saputelli
_______________________________________________________________________
Integrated Controls, Inc. Tel: 415-647-0480 EXT 107
2851 21st Street Fax: 415-647-3003
San Francisco, CA 94110 www.integratedcontrolsinc.com
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