Electronics Forum | Wed Feb 13 09:17:47 EST 2008 | scottp
The causes of voids are extremely paste dependent. I did a literature search a couple years ago and the papers all disagreed with each other - one would say turn knob "A" to the right and the next would tell you to turn it to the left. I did my own
Electronics Forum | Wed Apr 16 09:02:09 EDT 2008 | tonyamenson
One issue stated incorrectly was that the work order that had no problems, with the same layout and same parts, is a one up at SMT. The problomatic units are two ups. I know the first instinct is to say the profile, but we have run this assembly man
Electronics Forum | Wed Apr 30 16:00:12 EDT 2008 | tech13108
Hello, We have recently purchased an older MPM via auction and I am trying to get it running but not getting too far. When I power it up it goes thru a boot sequence then a screen appears on the monitor with a "warning cover not closed, close cov
Electronics Forum | Fri May 16 16:09:10 EDT 2008 | jmelson
Hmm, interesting. My Philips CSM84 weighs 1600 Lbs or so, and it bounces around quite a bit when moving. It doesn't really move very fast, maybe 2 M/sec tops, and 3600 CPH is about all you really get unless the feeder is right across from the compo
Electronics Forum | Fri May 23 18:55:20 EDT 2008 | gregoryyork
This is one of the biggest mistakes with the Lead Free process. We have all listened to the 'industry experts' and followed their advice and unfortunately got it wrong. Keep the dwell times (dependant on alloy selection) the same as Leaded so you are
Electronics Forum | Thu May 29 00:26:58 EDT 2008 | bobwillis
Bob Willis' Top Ten Reference Books Here is a new list of "Bob Willis' Top Ten" reference books that has been updated for 2007 to take into account recent changes in technology. In the publishing industry there are many charts and awards for the bes
Electronics Forum | Wed Jun 18 07:49:06 EDT 2008 | more_sunshine
hi i'm not experienced in creating pcbs but i have good background, and i have a bunch of questions. i have no access to world wide known pcb chemicals but i managed to get a cramolin positiv spray and i don't know if it is still usable or not? (di
Electronics Forum | Wed Jul 09 14:57:42 EDT 2008 | ck_the_flip
I think what Chunks meant is... TOOLING = THOSE POTS So basically, if some of your SMT or Through-Hole parts move around via a redesign or a respin, you will incur tooling costs (TOOLING is "THOSE LITTLE POTS FULL O' SOLDER.") When you're research
Electronics Forum | Thu Jul 03 19:27:54 EDT 2008 | proy
5 Zone HVA70 Oven Board 6 layer, 10" x 13" lots of space, most critical is 100 pin QFP AIM Water Soluble 487 Tin Lead paste on SN100C HASL boards This board is giving me disproportionate grief! I am running 23 in / min which gives me about 3.1 mi
Electronics Forum | Tue Jul 29 13:01:57 EDT 2008 | grics
I know your pain all to well. We currently use bmps or jpgs and group them by station (for case assembly) We do this for inspection purposes. Sad truth is most people on the line end up becoming the "sole builder" of the product and decide they ha
