Electronics Forum | Mon Apr 26 17:05:36 EDT 2004 | babe
If you have deep pockets and wish to spend alot of money over the next few years, then yes, call Metcal. Whatever solder iron you plan to use, it is my suggestion that you take a look at the board that you are going to solder. How big are the pads? H
Electronics Forum | Fri Apr 30 12:34:12 EDT 2004 | Bryan She
Hello all, these days I've met an OSP board testability issue. 1.OSP board 2.Solder paste:Kester R244 no clean paste 3.Print solder paste on test pad. Issue: There's brone(light yellow)flux residue on test pad,and the probe can't penetrate the residu
Electronics Forum | Mon Jun 07 14:13:53 EDT 2004 | ricardof
Gabriele, yes you're right, but my question is more focused to restrictions as for the Operators, and then the performance in Screen Printer and Oven. The board has 400 high speed parts and 20 parts for Odd Shape machine (QFPs and 2 BGAs), Board is n
Electronics Forum | Mon Jun 14 23:12:32 EDT 2004 | Rodion Pronin
Hello Ricardof I believe speaking of your example, huge boards with many components on them, a very important aspect would be the sequence in which you place your components on the board... It happends that I have a software that optimizes assembly
Electronics Forum | Mon Jun 07 17:58:12 EDT 2004 | Rob
UPDATE: Just for fun... I sacrificed a scrapped board to determine what remained and what fell and this is the result. Board dimension was 18"x9" and .9" thick. Components consist of hundreds of passives plus 386 proc (QFP256), TSOPs, SOLs 14/16/20,
Electronics Forum | Sat Jul 03 11:20:08 EDT 2004 | KEN
....not unique. But tough as hell! I build flex assemblies for a major P&P equipment manufacturer. Some are pure flex, most are ridgid flex. And of course, why put fiducials on the boards to help the process (why God, why me?) We use pallets and
Electronics Forum | Sat Jun 26 10:27:17 EDT 2004 | mskler
Hi all, We are facing prob. in MPEG card. WE are using 6 mil stencil with steel squeezee. There are two 20 mil Ic�s. Once we set profile according to the profile given by the supplier after that we made 2000 nos of boards & in first shot almost b
Electronics Forum | Mon Jun 28 10:17:44 EDT 2004 | davef
People like flat surfaces for placing and reflowing certain components, like fine pitch devices. Some board suppliers can supply HASL that is flat and well controlled from an amount of material stand-point. Unlike OSP, HASL has a wonderful shelf-li
Electronics Forum | Fri Jul 09 11:39:44 EDT 2004 | rtaft
Hi Chris, We use RMA but are considering changing to OA if it will help us acheive our goals of high quality and low cost. Our boards are requred to meet IPC class 3. Again, I am new to this so any advice about flux is appreciated. We are current
Electronics Forum | Mon Jul 12 14:00:37 EDT 2004 | blnorman
We've been using lasers to mark barcodes on our boards for some time now. We use a CO2 laser to burn through the solder mask on most of our boards. The machine is enclosed so the operators aren't exposed to the laser. The laser is also mounted on
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