Electronics Forum | Mon Oct 30 20:24:35 EST 2006 | davef
As we understand it, you: * Get some nice BGA from your supplier * Find BGA to be packaged properly * Bake the BGA for 24 hours at [what temperature?] to reduce the potntial for damaging moisture sensitive components during following processes * Remo
Electronics Forum | Fri Dec 01 14:12:50 EST 2000 | Jim M.
My company currently uses water soluble paste for our SMT process. We were having trouble retaining hot water in our in line, closed loop DI cleaner. The cleaner kept shutting down when the water temp. dropped below 125C. As a result, the conveyor
Electronics Forum | Fri Aug 28 05:07:59 EDT 2009 | sachu_70
Do you clean the stencil manually or using the automated under-stencil cleaner on your Printer (recommended)? 1. Ensure that stencil wipes are lint-free and soaked sufficiently with solvent before use. 2. If your printer supports automated cleaning
Electronics Forum | Fri Sep 07 21:43:40 EDT 2001 | mugen
Hi, We use IPA and Prozone, if IPA is so drastically detrimental, to the pcba's.....what suggested alternative, can you please recommend, as IPA replacement? Thanks.
Electronics Forum | Sat Jul 28 05:31:20 EDT 2001 | nop_e
Hi all I just got feedback from my customer about "White residue problem" around solder joints with manaul soldered connector at customer site and included the failure analysis report that there is residues of Cl,S,Na . I 'd like to know, the whi
Electronics Forum | Thu Oct 12 17:56:58 EDT 2000 | DennisF
The white residue can be caused by putting Alcohol on the no clean product. Some people will attempt to clean an area they have reworked.
Electronics Forum | Fri Mar 02 15:32:52 EST 2001 | jagman
We are seeing a white, powdery residue following the Wave process. Is this a solder masking issue (poor cure from the PCB mfg) or Wave process related? Any input is greatly appreciated.
Electronics Forum | Tue Mar 06 13:59:39 EST 2001 | dason_c
I have experience to the Kester 2331 water soluble flux long time ago with white residue and it related to the solder masking. Check what kind of the solder mask and ask Kester to do the test for you. Rgds.
Electronics Forum | Wed Oct 11 10:29:28 EDT 2000 | G. English
Try the following steps : FIRST CHECK THE ARCHIVE for further information, it WILL help you. Step One : What�s the chemical analysis of this white res? Obtain a sample. It could be tin, rosin, or something else??? Step Two : The fastest way I know
Electronics Forum | Thu Sep 06 10:55:37 EDT 2001 | davef
saturation occurs at ppm levels. Remember, IPA is extremely flammable and its bulk use makes the plant liable to all sorts of quite repressive safety rules/regulations and so on. Ignoring these rules exposes the owner to fines and possible plant cl
