Electronics Forum | Mon Oct 12 03:09:06 EDT 2015 | akon63
Problem with cleaning these machines is once you > start it's easy to get carried away. ;) > > We > cleaned our SPA-400F a few months ago, had been > offline for a while as we were using our > SPA-250. > > It started as just a clean and to > r
Electronics Forum | Wed Sep 08 17:28:11 EDT 1999 | Earl Moon
| | Has anybody have any experience with Top placement of BGA's. GLue descretes on bottom and then wavesolder.? | | | | | | | Hi Chris, | Why don't you process a double side reflow and use selective wave fixture for wave process. The process w
Electronics Forum | Tue Jan 24 07:43:45 EST 2006 | Chunks
Q: If you do not use a selective wave pallet does this not leave the possibility of solder flowing up thru the Via's on the board? A: No. Your board house can cover your vias with solder resist. Your board house can plug the vias. You can cover t
Electronics Forum | Tue Jan 13 09:38:52 EST 2004 | mleber
Can anyone provide a list of the top 5 solder paste / wave flux manufacturers by sales? We are evaluating changing to a new chemistry and would like evaluate several of the top manufacturers. Thanks.
Electronics Forum | Mon Mar 11 03:40:18 EDT 2019 | jineshjpr
BOT SIDE QFN DROP DURING TOP SIDE REFLOW; Bot & Top side solder profile temperatures are almost similar with a 5 Deg variation
Electronics Forum | Thu Jun 14 22:50:45 EDT 2001 | gregH
Hi, I read an article that says "Flux selection usually depends on the following factors": a) Solderability of pcb base metal or coating b) Corrosivity of vapours and residues c) electrical resistivity of residues d) Ease of removal of residues e)
Electronics Forum | Mon Jan 15 08:01:14 EST 2007 | pyro747
The wave process, Flux (NR 330) 3 zones preheat top and bottom side convection, with solder pot at 260 C. PCB is ran in a selective wave pallet.
Electronics Forum | Sat Jun 11 03:26:20 EDT 2016 | nagesh
Hi, I have problem with one of the BGA Top Cap Detached from the Solder Balis attached to the BGA. Advice /Suggest why the Top Cap Has come out. We produced 4150 Pieces & had similar problems with 5 Pieces. Thx in advance for all your suggestions. T
Electronics Forum | Mon Oct 11 08:34:52 EDT 1999 | C.K.
Thanks for the acvice, Dave and John. Like I stated above, I didn't feel comfortable with changing wave parameters since I knew that we'd be compromising our wave quality. I'll try the peelable mask thing, reprofile, and let you guys know what i fo
Electronics Forum | Thu May 16 09:39:25 EDT 2013 | eniac
Guys, thank you for your advice about Adipic Acid, it's an amazing! In my country one small box of Hakko Pretinning Solder paste (FS-100) costs USD30, 1 kg of this axid costs USD5.5 .
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