Electronics Forum | Mon Mar 13 16:56:26 EST 2006 | slthomas
He's a troll. Nobody could be that goofy without trying.
Electronics Forum | Wed Jul 23 03:04:57 EDT 2008 | gfro
Hello, We are using a PCB with thickness 3.2mm 4 layer and lot of through hole via's of diameter 0.4mm. We specified our PCB vendor to do plugging. Now we have big problems, that after 1..4 weeks we measure a low resistance between track's/via's of
Electronics Forum | Wed May 18 14:58:05 EDT 2005 | splice
Hi, I am having some PTH non wetting issues. Setup and chronology of events is explained: Set Up; Part: 1 MM pitch connector 378 pins Solder: Kester Ultra Pure 63/37 solder Pot; 250 C pre heat; Peak 94C top side Flux: Qualitek 775, Fluxer: foam T
Electronics Forum | Thu May 19 13:03:18 EDT 2005 | russ
On the non-wetted holes put a solder iron to them and see if they "bubble" if so, you have some outgassing in your PCB and they will need to be baked prior to assembly. If this is okay I would investigate the grnd layer that was mentioned. What is
Electronics Forum | Wed May 18 19:12:26 EDT 2005 | HOSS
Hello, Assuming that your dwell and coverage at the wave are in order..... Have you checked the angle and pressure of your fluxer air knife? You can only count on capilary action to a point. The air knife, set correctly, will help get your flux t
Electronics Forum | Thu May 19 12:50:19 EDT 2005 | splice1
Hi Hoss, Thanks for your reply. Yes I am seeing the flux flood over to the top surface of my board, so to an extent I am not concerned with the fluxer. I believ that the foam fluxer is functioning adequately.
Electronics Forum | Fri May 20 08:15:21 EDT 2005 | davef
better" doesn't make sense. Additionally with no preheat, primary side components see a large delta T when they hit the wave.
Electronics Forum | Wed Mar 08 10:59:04 EST 2006 | samir
Cal, thanks for the feedback. I've tried different adjustments to wave parameters with varying success. You know how wave is - what works today won't necessarily work tomorrow. ..and yes, we run Nitrogen on our waves.
Electronics Forum | Mon Mar 13 06:11:08 EST 2006 | Rob
Surely this is a job for Wavemaster Larry? Have you tried flux buster pins in your ICT yet? They are quite good at cutting through the crap on a board.
Electronics Forum | Mon Mar 13 12:53:21 EST 2006 | slthomas
"Surely this is a job for Wavemaster Larry?" I know this is supposed to be a serious forum, but that's some funny stuff! 8 mil stencils. Suuuuure.
.gif)
