Electronics Forum | Fri Jan 13 08:59:29 EST 2006 | james
We built some boards with incorrect Bgas and we had to pull the bad ones off. I need to know if we need to bake the boards before we add the correct BGAs on and resend through the reflow? We need to get these boards shipped asap after we install th
Electronics Forum | Sat Jan 14 08:13:14 EST 2006 | gipos Mike
We are doing a lot of CSP-BGA rework with tacky flux from Senju Metal.Their flux is very good.We are buying directly from Japan 529D flux. We have reworked BGA processor plastic sockets of Fujitsu Laptops. What kind of flux you are using? Not all of
Electronics Forum | Mon Jan 16 10:59:25 EST 2006 | davef
Ken Tacky flux reworked BGA will be perfectly reliable in most customer use environments. We do not have data, but the tacky flux reworked BGA will be less reliable than a BGA reworked with paste [assuming all other factors are the same], because t
Electronics Forum | Sat Jan 21 16:36:19 EST 2006 | gipos
Hi James, You can use the same flux for micro BGAs.The 529D we used for rework of high freq. CSPs and even w/out cleaning it still worked on 2.5GHz.We have not washed the flux for 6 months and the RF features of the circuits remain the same. No chan
Electronics Forum | Mon Jan 16 04:29:33 EST 2006 | Rob
No, but Kemet were late in adopting lead free finishes in comparison to the Japanese manufacturers, some of which have been compliant for years. The finish on Kemet Chip Caps is generally Matte Tin, & I have checked with our parent company that sell
Electronics Forum | Wed Jan 18 01:47:36 EST 2006 | pavel_murtishev
Good morning Manyhats, I have 2 years working experience with automatic DEK screen printers. DEK products are really very good and are able to produce repeatable high quality print. For example I never saw problems with paste deposition for finepitc
Electronics Forum | Mon Jan 16 09:08:33 EST 2006 | DannyJ
Has anybody tried this stuff? I was asked about it this morning and it sounds plausible from their website, minus "The small volume of spent material can then be inexpensively shipped back to P. Kay Metal for recycling" part. Website: http://www.p
Electronics Forum | Mon Jan 16 11:00:33 EST 2006 | frankp
Danny, I'm hoping to hear more about this, too. I've seen it mentioned in a couple of other posts, but so far Sara G. (Foresite Inc.) is the only regular SMTNet poster that's actually seen this stuff. Really curious about residues, and what kind of f
Electronics Forum | Mon Jan 23 16:35:51 EST 2006 | frankp
Took your advice Sara, and did contact PK. Got a data sheet that says "no residue on boards or components". But not done with concerns just yet - for example, if the MS2 becomes thicker and more viscous, what's that doing to my pumps? Unfortunately n
Electronics Forum | Mon Feb 13 22:09:08 EST 2006 | Baer
Hi all, I will do my best to answer questions on MS2 here. I will try to check back at least every other day. The MS2 does not mix with the solder. It only reacts with the dross. It does not get down into the pumps. It was just formally anounced la
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