Electronics Forum | Thu Oct 24 12:09:31 EDT 2002 | slthomas
Have you looked at cross-sectional analysis? If they can provide you details of where the failures are occurring, maybe you can chop one up and see exactly what's going on? We've done it once for our own engineering department and the results (not
Electronics Forum | Wed Apr 21 20:50:26 EDT 1999 | Dave F
| I'm having problems with trying to get a good solder joint using a Ceramic PCB. We are using AMTECH hi-temp solder (ws-486 96.5/3.5ag). My profile looks great and I used the recommended profile from Amtech with a few adjustments. My max temp is abo
Electronics Forum | Sun Jul 14 00:54:49 EDT 2002 | caldon
There are jobs out there....you just need to know where and what. If you are looking at Original Equipment manufacturers (Fuji,Siemens,exc.....) or CM's good luck! 1) you must be able to travel a fair amount 2)you may need to relocate. With that sa
Electronics Forum | Tue Aug 13 20:58:06 EDT 2002 | davef
Peterson: Ionic flux residues when combined with moisture and a voltage differential can plate conductive �fingers� on the surface of a PCB, but that doesn�t sound like what�s going on here. Your NC flux should not be particularly conductive. For
Electronics Forum | Tue Sep 10 12:17:42 EDT 2002 | dragonslayr
Genny - one more reply from the chorus. Do consider why Contract Manufacturing came into vogue in the first place. It allows OEMS the opportunity to focus on what they do best, design and marketing/sales. It also reduces the overall costs of doing bu
Electronics Forum | Tue Apr 01 09:58:52 EST 2003 | davef
You're entirely correct. The gold is most likely gone away. [Don't forget you can check if the surface is still solderable with a hand soldering iron.] We're not sure it it will give you the results you seek, but consider using a dye penetrant fai
Electronics Forum | Thu May 08 11:58:12 EDT 2003 | fmonette
Hi Chrissie, This might be old news to you but I just wanted to make sure that you are aware of all the implications of BGA rework relative to the control of moisture-sensitive components. For example, you need to keep track of the total exposure t
Electronics Forum | Wed Jul 02 07:00:56 EDT 2003 | davef
Title : SOLDER JOINT RELIABILITY OF Sn-Ag-Cu BGA COMPONENTS ATTACHED WITH EUTECTIC Pb-Sn SOLDER PASTE Author : Fay Hua et al. Author Company : Intel Corporation Date : 01/01/2003 Source : Journal Of Surface Mount Technology, Volume 16-
Electronics Forum | Tue Sep 30 14:48:03 EDT 2003 | davef
A failure analysis laboratory can delid and assess your parts. Some commercial labs are: * Accurel Systems International 785 Lucerne Dr Sunnyvale, CA 94085 408-737-3892 Fax: 3916 [ http://www.accurel.com/ ] * ANALYTICAL SOLUTIONS, INC. 10401 Researc
Electronics Forum | Thu Oct 02 21:00:26 EDT 2003 | davef
Who says the chlorine comes from your tap water? Our PTOW dumps boat loads of chlorine into our water periodically. Sometimes it's so bad you can smell it. We doubt that it is the source of your problem. This chlorine will volitize very quickly,
