Electronics Forum | Thu Nov 07 17:15:19 EST 2002 | slthomas
We have ESD safe velcro hook soled shoes for our operators. It keeps them at their machines. Seriously, everyone I've seen using it just uses heel straps and vacuums the carpet. Granted, many of them looked like they could use a shampooing, but I d
Electronics Forum | Thu Nov 07 12:35:38 EST 2002 | slthomas
Sounds like you're talking about the "heel" of the lead not being soldered, in other words, no heel fillet, which IS necessary. That problem, for us, was attributed primarily to poor layout (insufficient length of pad extension to provide room for
Electronics Forum | Thu Nov 07 15:12:46 EST 2002 | davef
Converting BGA to PGA. Yes!!! Wouldn't want progess in packaging design to slow us down, would we? [Haaaaa. Just kidding. Probably has something to do with legacy designs; form, fit and function; and all that stuff.] Tacky flux only, like a rew
Electronics Forum | Mon Nov 11 11:28:32 EST 2002 | davef
Sand is not a great conductor, compared to copper. Never heard of using the stuff on RF boards. Our board fabricator uses Dupont CP100, now CP101, [or something like that cuse who's going to check?] when plugging via on cheap boards. Your board fa
Electronics Forum | Thu Nov 14 05:45:51 EST 2002 | Jon O'Connell
Has anyone had experiences of ICT test fixtures actually damaging the PCB boards - typically when they have moved away from HASL finish to OSP. I would also like to hear more about any specific issues seen at ICT for non HASL pcb finishes thanks -
Electronics Forum | Thu Nov 14 09:24:07 EST 2002 | joconnell
What about when debugging the board I recently saw a case where we damaged a board between - 5-10 cycles of the fixture It's a catch 22 - where you need high force probes to breal the OSP - but the copper is hard surface, not like the solder HASL a
Electronics Forum | Mon Nov 18 11:14:57 EST 2002 | bpan
Very good machine. Dont know about Claude but sounds like he doesnt know the machine too well. Be careful if you buy it because Tyco's Parts support for the machine are terrible. For ex. Tried to buy a sensor for the lifters on our transport and they
Electronics Forum | Thu Nov 21 15:09:29 EST 2002 | Bill Barthel
There have been a number of papers and articles on the subject as well as tutorials and workshops sponsored by SMTA, etc. I can send you a paper I presented in 1995 that may cover most of your questions. There are also many other resources that mig
Electronics Forum | Mon Dec 02 21:32:34 EST 2002 | davef
Sounds like you're killing the poor little critters. Tell us about: * Placement force. * Reflow method. * Where and how you are measuring your reflow recipe. * Cooling rate of the reflow recipe. * How the solder connection to the metalization appear
Electronics Forum | Thu Dec 05 15:06:53 EST 2002 | cbudzinski
HI can anyone tell me if they ask there board houses to hold to a max amount of contamination NaCl per sq /in on there incomming bare boards, I have a Ionograph 500SMD and have been testing some of the bare boards comming in to stock, some are much
