Electronics Forum | Mon Dec 20 16:34:15 EST 2004 | steve
Customer has tried OA and NC alloy solder pads may be nickel Chromium. Non-wetting issue. Scraping pad alloys a bit of adhesion of solder but no intermettalic bond. Any suggestions?
Electronics Forum | Tue Dec 21 12:18:50 EST 2004 | rlackey
Hi Steve, Info & distributors at http://www.cobar.com From memory I believe it was S6M-323XM3S, but I'll have a good dig for the info when I get the chance. Rob.
Electronics Forum | Wed Dec 22 12:32:30 EST 2004 | rlackey
Hi Steve, Sorry it was S62-325XM3 - must be the lead fumes getting to me! Rob.
Electronics Forum | Mon Dec 20 18:09:56 EST 2004 | BWET
Has anybody tried to use the new STENCILQUIK(TM) peel and stick BGA stencils that blocks solder flow and repairs damaged dogbone mask?
Electronics Forum | Wed Dec 22 08:49:55 EST 2004 | markhoch
I'm looking for some data to support my argument that HASL boards are not the most ideal boards for manufacturing involving BGA's and 0402's. I'm sure one of you SMT Gurus out there can point me in the right direction! Thank you in advance!
Electronics Forum | Wed Dec 22 09:56:12 EST 2004 | davef
For BGA: http://www.smta.org/knowledge/proceedings_abstract.cfm?PROCEEDING_ID=731 For 0402: http://www.xs4all.nl/~tersted/PDF_files/Plexus/tombstoning.pdf
Electronics Forum | Wed Dec 22 11:12:33 EST 2004 | Steve
Does anyone have an opinion about the pro's and con's of Getek vs Isola FR408 laminate? What laminate to most of you call out? Thanks in advance for your feedback. Steve
Electronics Forum | Thu Dec 23 20:18:01 EST 2004 | davef
Look here: http://www.standardpc.com/hitemp-laminates.htm There is nothing significant in the selection of this supplier's table than others posted on the web.
Electronics Forum | Wed Dec 22 21:14:53 EST 2004 | davef
IPC-FA-251 recommends 121*C for 30-60 minutes for 1 and 2 flex layer circuits. A rigid flex can take easily an hour per layer depending on the construction.
Electronics Forum | Tue Jan 04 01:22:07 EST 2005 | smtek_cc
Hi Ahmad, I have one MCS 16F controller currently in Hong Kong. If you are interested, please contact me. carlc@smtek.com.hk Carl
