Electronics Forum | Tue Jul 11 11:23:02 EDT 2006 | russ
It sure does Dave, 782 has some recs regarding pad orientation and shape mods for wave soldering. I figured that this would be helpful here since most do not think of the SMT through wave portion and what it takes to make it work at the highest lev
Electronics Forum | Thu Apr 16 16:52:09 EDT 2009 | ck_the_flip
Thanks Dave. Specifically, do you know what minimum conductor spacings are on 0.030" via holes - via-to-via?
Electronics Forum | Mon Jul 10 20:59:14 EDT 2006 | davef
Dave Try: * IPC-2221 - Generic Standard On Printed Board Design * IPC-2222 - Sectional Design Standard For Printed Board For Organic Printed Boards Our old [euphemistically] friend Earl Moon has written extensively on DFM. Look at his site: http://
Electronics Forum | Fri Jul 14 04:02:28 EDT 2000 | JohnW
Gees Dave..that's what I call a list tell me you never typed it all??..think the only thing missing is to make sure you build it the right way up!... So sound's like I've been sused by my collegue then..no more quiet day's sleeping at my desk I feel
Electronics Forum | Thu Jul 13 06:20:56 EDT 2000 | Jacqueline
Sorry for wearing you out Dave, but you only had to tell me the once! Anyway thanks for the info. input but I'm now also away to pick at a collegue/friend's brain ie. JohnW. Just found out about his ongoing contribution to SMTnet (that he was the one
Electronics Forum | Mon Jul 17 16:51:20 EDT 2000 | JAX
Michael, You nailed it, then again..... confusion is bliss. Oh Dave, Next time you have comments about how long your threads are just let them know: � Big Ideas are so hard to recognize, so fragile, so easy to kill. Don�t forget that,
Electronics Forum | Tue Dec 07 22:25:45 EST 1999 | sin
Dave, the zero-defect is impossible through my understand in a high volume or proto run manufacturing. Base on theory i have read, yes of course it should be. but practical side of view, it is impossible. you are talking about plenty of variable to
Electronics Forum | Tue Nov 11 16:30:08 EST 2008 | naynayno
Occasionally solder mask thickness is believed to be the cause of gasketing challenges during paste printing. We currently specific IPC-SM-840 on our fab drawings but this provides no limits or guidelines on thickness. I do not want to cause an unr
Electronics Forum | Fri Aug 13 11:21:15 EDT 1999 | Earl Moon
| | Ladies and Gentlemen, | | | | As a newly appointed DFM/CE "guru" here, one of my responsibilities has become repair (of course). As I have some knowledge of BGA repair/rework using semi-automated equipment, it naturally follows I would hav treme
Electronics Forum | Wed Sep 01 14:15:27 EDT 1999 | Dave F
| Help | | I have just received some PCBs with external tracks entering SMD pads at all angles, tangents + 45 degs etc. | | Where can I obtain information as to how tracks should enter SMD pads.? I have looked at several IPC books and got some mino
