Electronics Forum | Fri Mar 02 17:44:55 EST 2001 | davef
Coo Like they say ... if you're near a wave solder machine during an earth quake, RUN!!! Shaken, but NOT sturred.
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 | Sat Mar 03 03:56:04 EST 2001 | wister
I had confused by same problem, the reason I found is the interval between wave soldering and cleaning is too long and did not set the temp. of D.I water at 120F~150F. Kester flux is good. Rgs, Wister
Electronics Forum | Mon Mar 12 12:07:02 EST 2001 | ramigary
Hi Daniel: I had a similar problem, we haven't PGAs but Have another big component. we change our process adding solderpaste by this side. I don't know what you think about it, but was our solution of this problem. Excuse my English. Ramon I
Electronics Forum | Wed Mar 14 17:26:03 EST 2001 | davef
Most $$-value stuff is dependant on the cost structure of the company. Why not do a small cost study to measure the amount of time your improvements save? Folk in accounting should be able to "rough price" the $$ benefit of your efforts.
Electronics Forum | Thu Mar 15 11:12:45 EST 2001 | slthomas
solder, but flux -> adhesive. Hmmmmm.... Are the chemists working hard to reduce the consequences of these possibilities? And as to Dave's comment about long term reliability issues due to outgassing from the adhesive, double-hmmmmmmm....... Ther
Electronics Forum | Wed Mar 14 09:58:07 EST 2001 | dason_c
I am not sure that how big of your shield, I am using Metcal Soldering System and modify the Metcal Removal Tip to cut into half. I don't want to use hot air and it may damage the component inside.... Rgds. Dason
Electronics Forum | Mon Mar 19 13:42:12 EST 2001 | Stephen Schoppe
Process Sciences, Inc. has had previous success with soldering BGAs of this size on large assemblies. Please let us know if you would like us to provide assistance. Stephen Schoppe 512-259-7070 ph. sms@process-sciences.com
Electronics Forum | Mon Mar 19 22:07:05 EST 2001 | davef
Your carbon filters are getting gummed-up by the smoke component of the fumes. [Your carbon filter is intended to remove the vapor portion of the fumes.] You need a cheap bag filter in front of the carbon filter that you can sacrifice. These fumes
Electronics Forum | Thu Mar 22 10:44:59 EST 2001 | davef
E-mail Dennis Fritz [DDFRITZ@AOL.COM] He works at MacDermid, Inc. Tell him what you know, what you're trying to figure-out, and I'm sure he'd try to help you.
