Electronics Forum: pass (Page 127 of 142)

Re: Assembly of CSP on pads with vias.

Electronics Forum | Sat Jan 23 17:00:44 EST 1999 | Earl Moon

Hi Everyone, We plan to build, for reliability/experimental/research purpose some CSPs (namely Tessera microBGA 46-I/O 0/75mm pitch and TI 64 I/O 0/8 mm pitch). the various factors that we plan to evaluate are the reliability and assembly con

Just finished a VOC-FREE FLUX Evaluations

Electronics Forum | Thu Jan 14 13:25:53 EST 1999 | Chrys

Hi Folks. Has any Process Engineer here done a complete evaluation or controlled experiment for VOC-FREE Flux? Our goal here at CEBUKid, Inc. is to implement a VOC-FREE process. We have all the necessary (OPTIFLUX) spray equipment, and we're cur

Re: Just finished a VOC-FREE FLUX Evaluations

Electronics Forum | Mon Feb 22 16:39:33 EST 1999 | C.K.

Hi Folks. Has any Process Engineer here done a complete evaluation or controlled experiment for VOC-FREE Flux? Our goal here at CEBUKid, Inc. is to implement a VOC-FREE process. We have all the necessary (OPTIFLUX) spray equipment, and we're c

Re: N2 Reduction

Electronics Forum | Wed Dec 30 17:20:40 EST 1998 | Marc P.

Does anyone have angles on how to reduce N2 consumption at reflow process (i.e. process control equipment, etc.)? Any help would be appreciated There are a number of ways to reduce consumption: 1)One way to look at consumption is to view i

Re: Thruput not up to snuff.

Electronics Forum | Wed Aug 04 14:23:06 EDT 1999 | Dave F

Jim McCarten and Dave F, Jim - How about a little explanation on your PlacePro 7100 comments? I'd like to know what a "typical SMT board" is and how "thruput is cut in half" by assembling it. Is this typical SMT board something that most manuf

Re: Need help with no-clean specs

Electronics Forum | Wed Sep 30 18:43:46 EDT 1998 | Graham Naisbitt

Chrys, Please, refer firsatly to J-STD-001 Appendix D. Now, consider: SIR testing will help define the reliability of your finished assembly - it will not tell you how clean it is. Which do you or your customer prefer? Present SIR testing de

Re: unsoldered joints

Electronics Forum | Tue Sep 22 12:25:31 EDT 1998 | Chrys

Hi Jacqueline! Do these joints that you're having problems with happen to be on fine pitch solder joints? Are the fillets staying attached to the foot and separating from the pads cleanly? If that is true, are there many vias concen

Re: Wave Solder Fixtures: Biting the dust FAST!

Electronics Forum | Mon Sep 14 17:39:37 EDT 1998 | Steve A

I am running composite fixtures on my wave solder machine and after about 500 passes each (1 month)they are showing serious signs of wear in that the composite surface is bubbling up and glass fibers are also starting to show. The problem here

Re: Wave Solder Fixtures: Biting the dust FAST!

Electronics Forum | Tue Sep 15 07:54:42 EDT 1998 | Rob Fischer

I am running composite fixtures on my wave solder machine and after about 500 passes each (1 month)they are showing serious signs of wear in that the composite surface is bubbling up and glass fibers are also starting to show. The problem h

Re: DFM Guidelines or solderability?

Electronics Forum | Thu Aug 20 15:29:45 EDT 1998 | D. Lange

Re: Questions #2 Are you having solderability problems with that arrangement? Sounds like problems could be solved at the wave solder. If the customer has already spun pcb then sometimes for low volume it would be easier to correct the problem at wa


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