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 | Fri Mar 02 15:52:19 EST 2001 | jagman
This happens to be after the water wash process. These are Burn-In boards so an SMT epoxy is used prior to wave. The flux used is Kester 2331ZX. Would using a thinner cause this to occur? The residue is all over the board. Thanks.
Electronics Forum | Fri Mar 02 16:47:39 EST 2001 | traviss
If the thinner you are using is 4662 and the correct amounts that should not be the problem. Is this the first solder operation? I would start by looking for rosen or no clean flux getting on the boards at some point before wave soldering and not bei
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 | 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 | Sat Mar 03 09:48:27 EST 2001 | ghenning
Considering putting one of these into production. Any comments as to reliability, accuracy, programming ease, etc. greatly appreciated. Targeting small discretes (e.g. 0402), PBGA, CSP, & QFP (to 16 mil) Thanks in advance...
Electronics Forum | Wed Mar 07 09:29:36 EST 2001 | gsmguru
Enter A value of -1 in the Tray pickup X & Tray pickup Y fields. This will disable the automatic empty tray pickup by the machine. I would recommend getting a data sheet on the tray from the component vendor for accurate pocket & tray dimensions. Var
Electronics Forum | Wed May 23 11:14:17 EDT 2001 | Steven Sicard
Hi There Just set your Tray Pickup X and Y to -1. This way, the PTF wont reject your tray but you will need to remove manually the empty tray. It's a little bit longer but you wont have any broken pieces. Seeya! Steven
Electronics Forum | Mon Mar 05 17:16:11 EST 2001 | lileubie
Hello All, Does anyone have any experience with soldering to vapor deposited metallizations such as gold? Or, does anyone know of any papers discussing soldering to vapor deposited metals? Any info would be greatly appreciated. Thanks, Glenn
Electronics Forum | Tue Mar 06 19:33:28 EST 2001 | jhingtgen
DEK wrote a paper that compared 45 degree blades vs 60 degree blades. This paper was presented at APEX 2000 by Jay Hinerman. Email me at jhingtgen@dek.com and I will ensure you get a copy.
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