Electronics Forum | Fri Apr 05 12:58:57 EST 2002 | stefwitt
I am surprised to hear that you can wave a socket with or without component in it. What is the orientation of the socket on the board, 0 or 45 degree? Are you sure, you can remove the PLCC out of the socket after soldering? Do you have the designers
Electronics Forum | Fri Apr 12 16:13:36 EDT 2002 | pjc
Dave, USI makes spray fluxers with stepper motor and servo motor controlled traverse heads that only spray on the board. Virtually no waste going up the stack. www.ultraspray.com
Electronics Forum | Tue Apr 09 18:29:34 EDT 2002 | davef
Any-Layer Interstitial Via Hole (ALIVH). In printed circuit board fabrication, a registered mark of Matsushita Electric for a filled microvia structure in all layers for applications requiring small-size, lightweight build-up PWB to achieve high-den
Electronics Forum | Thu Apr 11 12:53:41 EDT 2002 | Winnie Chan
I was wondering what the water quality requirements are to wash PCBs? For example, the specific details including resistivity, pH, etc. In addition, can you also explain why DI is preferred? What is the scientific explanation behind that? Than
Electronics Forum | Thu Apr 18 20:48:25 EDT 2002 | ianchan
Hi, what model and make is your "Zero Ion Tester" (is that the brand make?)? Is yours a portable unit? who's the OEM supplier?
Electronics Forum | Fri Apr 19 11:11:59 EDT 2002 | dason_c
Zero Ion is from Aqueous Technologies. Check their web site, http://www.aqueoustech.com/Zero-Ion.htm.
Electronics Forum | Mon May 20 16:56:24 EDT 2002 | Gary
Excess slump of paste and mis-registration can cause solder balls along with moisture. Use same date code of pcb and run with no components, paste only. Also pre-bake boards with humidity sensor in oven. If high humidity, moisture and solvent residue
Electronics Forum | Mon Apr 29 03:16:43 EDT 2002 | Bob Willis
I have only seem problems so I would suggest you don't do it.
Electronics Forum | Sat Apr 27 21:56:50 EDT 2002 | yngwie
Thanx for the feedback. The solder mask is PSR-4000 ( need to confirm this - not too sure ). If the board got in touch with the solder bath, for the contact time of 3 - 6 secs, this should not be the case for proper curing process right ?. thanx ag
Electronics Forum | Thu May 02 23:06:56 EDT 2002 | sohct
Hi Yannick Please sent the article "Board finishes for EMS Provider" to me as I can't find it in Circuitree. Your help is very much appreciated. Regards
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