Electronics Forum | Wed Aug 11 09:35:15 EDT 2004 | loz
Last time I experienced this, one of the operators had increased the wave height. Reverted it back to the original setting and no more balls. Under cured solder resist again? Mr Greg? Not doubting your summation but PWB vendors are too blame again?
Electronics Forum | Thu Aug 12 08:03:54 EDT 2004 | Rafal M.
We used fluxes: Cobar 94-QMB (no bismuth), RF800, Cobar94RXZ-M, with foam and spray fluxers: MBO clean alloy SN63PB37.experienced with changing preheatting, speed of covoyer single and double wave., we tried every combination. I think the problem is
Electronics Forum | Wed Aug 04 17:16:13 EDT 2004 | Richard
Can anyone comment on inspection criteria for PIH applications. I'm of the opinion that the inspection criteria used for wave soldered joints should be used for PIH. Some colleagues believe that a bottom side fillet is not necessary since the solde
Electronics Forum | Thu Aug 05 16:15:18 EDT 2004 | pjc
Are you considering baking due to moisture exposure? Not all OSPs are created equal. I would check with your PWB fabricator about dry times and effects on their OSP finish. After you get it, I'd still try just one PWB for bake-dry out and check solde
Electronics Forum | Fri Aug 06 10:07:50 EDT 2004 | blnorman
OSP has limited elevated temperature exposure capability. Couple that with the fact that solvents (IPA in particular) will remove the OSP. The more material you loose the higher the chances for pad oxidation. We ran an experiment with board washin
Electronics Forum | Fri Aug 06 07:16:36 EDT 2004 | davef
When moisture outgasses through plating, it continues through the molten solder, causing a meak solder connection. There's another issue with thin plating that we haven't focused on in this thread. If plating is thin, the stress on the barrel of a
Electronics Forum | Fri Jul 15 07:23:06 EDT 2005 | Ramon Urrutia
We are Global Sourcing Specialists Ltd, buyers and exporters of redundant stock. We have a Zevac DRS 24 and 22 for sale if you are interested. Please contact ramon.urrutia@btconnect.com or ring/fax:4401291423861 Both machines are in good working orde
Electronics Forum | Mon Aug 09 00:34:51 EDT 2004 | Craig
Is anyone using/tried this product/process in production? If so what advantages/disadvantages have you discovered? Whats the pricing like compared to standard PCBs? We run very high mix of products on the same line and am curious as to whether it is
Electronics Forum | Wed Dec 01 21:40:06 EST 2004 | Grant
Hi, High temp solder balls don't collapse in current lead based soldering, so lead free balls are similar, and don't collapse, but should still solder ok. They just look different. However I would like to know other peoples experience about reliabil
Electronics Forum | Tue Aug 10 05:32:42 EDT 2004 | praveen_madaan@jabil.com
Hi, Has any body experienced the problem of poor cotacts on HDMI connectors. The connectors pins are gold plated and we see some kind of white residue on the gold pins.How to check if this is a flux residue?We are using No Clean flux in wave solderin
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