Electronics Forum | Thu Aug 01 00:17:17 EDT 2013 | paul_bmc
SMTnet colleagues, I am looking for your opinions on the PCB/CCA cleaning process. Regardless of fluxes or population complexity I want your opinion on these three cleaning processes and what you consider to be the best for what and why. Thanks for
Electronics Forum | Thu Aug 01 00:17:28 EDT 2013 | paul_bmc
SMTnet colleagues, I am looking for your opinions on the PCB/CCA cleaning process. Regardless of fluxes or population complexity I want your opinion on these three cleaning processes and what you consider to be the best for what and why. Thanks for
Electronics Forum | Mon Oct 03 21:02:23 EDT 2016 | rwd
I am doing some rework to my CCA. I then need to conformal coat the board. I'm using Humiseal 1A33 GEL and my jumper wires are teflon coated. I understand the chemical interaction between the 2 products. My question is "Is this an acceptable prac
Electronics Forum | Thu Jul 18 13:11:56 EDT 2002 | gdstanton
Steve, We are touching up 6 - 12% of all solder joints processed. We consider the solder joint to be the focal point of the SMT process. Therefore our metric is based on it. For example in a given month we... 1. Assembled 25pcs of 'A' (IPC-A-610/J
Electronics Forum | Thu Jan 20 08:08:24 EST 2011 | deanm
Because we build Class 3 assemblies, our company has formal inspection steps on our routes. CCA's go through surface mount and then an operator inspects the solder joints for defects and corrects them (touch-up). Following this they go to formal insp
Electronics Forum | Wed Jun 13 16:58:26 EDT 2001 | Ken Lester
Greg; The universal profile concept maybe misleading. the main objective of a reflow system is to reach a certain temperature and maintain it for the required period of time. If your initial profile is set to accomodate this on any board the only va
Electronics Forum | Thu Jul 18 15:21:32 EDT 2002 | gdstanton
Steve, Seriously we really do that much. Don't know much about your stuff but our designs typically have as much as five 144 pin QFPs on each CCA. Boards are small and double sided with BGA and uBGA. We build some high reliability space stuff and w
Electronics Forum | Tue Feb 04 09:03:45 EST 2003 | Russ Roberts
Greetings, I am pretty new to SMT production, and have learned much from this forum. I am getting ready to build a CCA with many 0402 parts that are really close together. I consider these fine pitch. The board also has two QFPS, so my stencil design
Electronics Forum | Mon Apr 18 10:01:33 EDT 2005 | global
The CCA drawing actually does belong to our customer as it is a DOD contract. We were the last ones to ever build the cards but since so much time has passed since the last build all of our PWB vendors like us have probably purged their systems of al
Electronics Forum | Mon Mar 09 05:45:42 EDT 2009 | ghcarnu
Am comandat niste duze speciale pentru manipularea unor conectori miniatura; cel care s-a angajat sa le faca le-a testat pe un banc, nu pe masina, utilizand o sursa de vacuum care genera 26 inch de vacuum; voiam sa stiu daca Emerald genereaza cam tot
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