Thanks... it's reassuring to see there are some folks out there...:) not
everyone is away on holiday are they???
I hope your summer is going great... We have been very, very busy and I
figure that's the same for most of you...
I'm planning on putting together a little presentation on 'Reading Fab
Drawings' over the next week or so. It's a good subject, pondered by many
folks who have had to interpret the drawings we send them to build our
boards from... I'm sure we could all benefit from the use of better
communications...
I have had on occasion received boards that came in that were mostly
'artistic renditions' of what was really asked for... by that I mean somehow
the cam operator on the other end interpreted the drawing to allow break
away tie points in the assembly panel that weren't in the drawing or removed
others that were needed to support the board in the panel and were drawn on
the drawing... We have to indicate the location of any break away tie points
exactly in order to avoid problems with traces or parts sitting too close to
the break away point and over stressing them during Singulation or
de-panelization.
Board materials sometimes don't meet spec, copper and board thickness can
vary widely with too general or non-specific notes. I sometimes wonder if
the 'language' used in the notes doesn't drive this or if they even read the
drawings at all... After you get to know the folks in your receiving
inspection department you will undoubtedly see some of these sort of
variations, especially when you switch vendors... Oh boy! Watch those first
batches of boards that come in closely...
At any rate, any pointers, experiences, or stories you all have for the
short presentation are most appreciated... I'll be happy to draw on your
experiences in creating it...
Of course, have a terrific summer... it goes by very quickly!
Best regards,
Bill Brooks - KG6VVP
PCB Design Engineer, C.I.D.+, C.I.I.
Tel: (760)597-1500 Ext 3772 Fax: (760)597-1510
Datron World Communications, Inc.
_______________________________________
San Diego Chapter of the IPC Designers Council
Communications Officer, Web Manager
http://dcchapters.ipc.org/SanDiego/
http://pcbwizards.com
-----Original Message-----
From: Brionez, Gregory [mailto:[log in to unmask]]
Sent: Tuesday, July 19, 2005 11:55 AM
To: (Designers Council Forum); Brooks,Bill
Subject: RE: [DC] test -
Were here! Were here!
Paul Brionez - CID <mailto:[log in to unmask]>
[log in to unmask] <mailto:[log in to unmask]>
PCB Designer
PH: 847-673-2718 x1394
FAX: 847-673-9789
DIVISION: Electronic/Systems
MPC Products Corporation
<http://www.mpcproducts.com/> ISO 9001 Certified
Skokie, IL USA
<http://www.mpcproducts.com/>
*
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