Electronics Forum | Tue Mar 23 23:17:03 EST 1999 | Chris G.
| Are there many of you who are soldering through hole parts in your surface mount reflow oven? How repeatable is the process? Do you need to touch up a lot after reflow? We don't do long runs maybe 200, 300 boards max. Can you just screen print
Electronics Forum | Mon Feb 22 14:21:14 EST 1999 | Rick Wyman
| | Hey all- | | | | My question is this: My stencil printer operator has said that he has to | | wipe our 6-mil stencil each pass to get the paste in the 20-mill pitch | | aperatures for a QFP to release well. We are using Amtech NC-559 type 3 |
Electronics Forum | Wed Jan 27 23:29:28 EST 1999 | parag palshikar
| | i am working with the noclean process and getting white residues on the bottomside of the board probably due to the | | wave soldering flux.i am using a no-clean solder paste and a noclean wave solder flux.The boards passed the accelerated tempe
Electronics Forum | Mon Jan 25 10:59:01 EST 1999 | Ng
| | It has been known that sufficient cooling after soldering is important in order to get a stronger joint during its solidification stage. And it has been so much emphasised with reflow oven. But, why many models of wave soldering machine do not co
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
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
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
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
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
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
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