Electronics Forum | Wed Aug 28 10:16:12 EDT 2002 | Jim M.
Sam We install a lot of die in the SMT room using same process as SMT parts.Water soluble solder paste is used for attachment of die to ceramic and boards. Biggest problem i found is the adjustment from installing the die in the bonding area. The t
Electronics Forum | Thu Jan 20 13:21:54 EST 2011 | rgduval
Dean, In a previous life, boards came off of the machines, and went to SMT QC, then to SMT T/U before heading off to wash and through-hole. The concept being that the SMT "team" was responsible for the quality coming off the machine, with QC and T/
Electronics Forum | Wed Jan 06 10:25:15 EST 2016 | swag
I've done more if this that you can possibly imagine. I've designed 100 or more router fixture plates. It's not always easy that's for sure. We use a Cencorp router. It does O.K. but definately a little tricky to get nice cuts in the flex only ar
Electronics Forum | Thu Jan 05 12:28:12 EST 2017 | rgduval
I'd recommend not using them, personally :) The long term reliability of the SMT joint is suspect, IMHO. I had them for an in-house manufactured bed-of-nails test fixture for testing somewhere north of 5000 units....after the first 100, we were rep
Electronics Forum | Thu Mar 05 23:33:53 EST 1998 | Ron Costa
| | Hello everyone! | | Does any know anything about bare board size variations? | | Is there a spec. or tolerance? | | I'm running small lots of boards and during the screen printing process | | I find that I cannot paste each board perfectly.I've t
Electronics Forum | Fri Jun 27 10:27:59 EDT 2003 | davef
Since you�re asking the question about proper handling of OSP board, there may still be time to talk you out of using that material. * Cleaning of mis-printed board could cause non-wetting problems. This tends to remove a fraction of OSP coating. 0.3
Electronics Forum | Sat Mar 05 01:11:31 EST 2011 | rway
We use both technologies and each comes with a mixed bag. What is the driving force behind your desire to convert? Is it just bad chips or something else? It sounds like you are having quality issues with your vendor and you would be good to addre
Electronics Forum | Fri Aug 25 09:18:40 EDT 2000 | Peter
Welcome back Moon Man. Your title is an apt description of the occurrence of your return. I always enjoy your bombastic baccalaureate, and welcome your feedback and observations. It is very helpful to hear from someone who has reached the point of fr
Electronics Forum | Fri Mar 06 10:30:46 EST 1998 | Ron Costa
| | | Hello everyone! | | | Does any know anything about bare board size variations? | | | Is there a spec. or tolerance? | | | I'm running small lots of boards and during the screen printing process | | | I find that I cannot paste each board perfec
Electronics Forum | Thu Jul 13 22:20:38 EDT 2000 | Dave F
=10 mils larger than lead 3 silk screen legend text weight >=10 mils 4 pads >=15 mils larger than finished hole sizes 5 place through hole components on 50 mil grid 6 no silk screen legend text over vias (if vias not solder masked) or holes 7 so
