Electronics Forum | Mon Feb 24 20:37:01 EST 2003 | davef
Key Food and Drug Administration [FDA] Compliance Guidelines are in: * Blood/Biotechnology * Cosmetics * Drugs * Food * Medical Devices * Positron Emission Tomography The medical device industry adheres to the rules of Good Manufacturing Practice (G
Electronics Forum | Wed Mar 05 10:59:04 EST 2003 | jfb2003
Currently, my company's applies a PCB bake (5 hours @ 125C) for all SMT PCB's prior to surface mount assembly. Many of us believe this is a non-value added activity, and have concluded it can be eliminated. With today's PCB process controls coupled
Electronics Forum | Mon Apr 14 12:40:28 EDT 2003 | jimcorr
They are letting you go on holiday with these problems outstanding??!! But seriously after reading about your problems I think that any further work is basically throwing good ��$$ after bad and reworking BGA almost always ensure that they will fail
Electronics Forum | Wed Apr 16 01:40:17 EDT 2003 | praveen
Hi , We are using water wash solder paste to solder the SMT LED's manufactured by Chicago Miniature lamp (CMD93-21 & 22)and Kingbright. Achieving the solder fillet , wetting has no issue but we observe high fallout at the functional testing. If we do
Electronics Forum | Tue May 06 20:43:31 EDT 2003 | MA/NY DDave
Hi Our SMTnet buddy DaveyF already gave a better and faster reply than I can give at present. Let me give one answer to your question without checking DaveyF's formula which is probably a true equation. DaveyF can always correct me. As you can see
Electronics Forum | Wed May 12 12:11:54 EDT 2004 | solderpro
Bruce, regards to all who are trying to help and have great input, with those type of lead length, I would be very impressed to see you get rid of the problem, and as the others said, no clean in a foam fluxer, not good but workable.... the real issu
Electronics Forum | Fri Jun 20 09:38:56 EDT 2003 | caldon
Hi John- First, I do not have first hand experience so my input is pure theory. This type of package (in Some Cases) has a center grounding bonds and leadless legs ups the difficulty tremendously. With no stand-off from the Balls(or Legs) when the so
Electronics Forum | Wed Jul 02 18:01:14 EDT 2003 | csimfgeng
We provide each assembly its own recipe then customize the unique recipe as required, using a SlimKIC 2000 profiler. This tool allows precise control of the reflow process and accounts for the component and layer densities of each board. This appro
Electronics Forum | Wed Jul 09 18:02:48 EDT 2003 | slthomas
Just when you think you're getting somewhere... QA sent me a vendor response to our corrective action request. They stated that their normal process for this product includes an ultrasonic cleaning cycle of 20 MINUTES minimum. It might be 30, we'r
Electronics Forum | Fri Aug 08 08:00:46 EDT 2003 | davef
Matt: You're correct. Do not mess with these boards. If the immersion tin [imm tin] is discolored, it will not solder with routine processes. Ask your customer to return the boards to his / her fabricator and have the imm tin replated. The fabri
