Electronics Forum | Thu Feb 21 04:41:37 EST 2008 | mun4o
hi,Toni, we use only FR4.Some of PCB we order in China and Taiwan.With these PCBs we can't any problem.Other PCB we order here in Bulgaria.The problems with voids start last year - we have voids only in PCBs from Bulgarian factory.The process is sam
Electronics Forum | Tue Aug 21 12:57:49 EDT 2007 | ev
Looking for pointers. We have a semi-automatic SMT Techniques stencil printer. We have had some problems with a recent job. Problems were in the areas of finer pitch ics (paste voids as well as paste shorts and some smearing) in certain locations on
Electronics Forum | Wed Aug 22 09:53:06 EDT 2007 | slthomas
"The question is: should we be looking at the operator? the paste? or the setup?" Yes. ;) Those guys love to brag about their 4 corner height adjustment on those printers. The fact is it's a PITA and shouldn't be necessary in the first place. It's
Electronics Forum | Tue Aug 28 06:17:11 EDT 2007 | jgrootkoerkamp
I have problems with blowholes during the wave soldering process. I already find out that the stock time between reflow and wave is the most important. The longer the boards are in stock the more blowholes we have. We don't have a climat controlled
Electronics Forum | Fri Aug 31 00:28:09 EDT 2007 | itaig1
We are currently looking at buying a vapour phase reflow batch oven. We currently use an IR convection batch oven and want to know if there is any advantage in switching over to vapour phase?. I've heard that tomb stoning is a common problem do t
Electronics Forum | Thu Oct 04 15:50:32 EDT 2007 | naynayno
Being that is budgeting season I am interested in specifying more depaneling equipment but with an eye towards quality / realiability. We use routing for COB assemblies but have spec'd the Cab 4M for everything else. However, I came across a Frost
Electronics Forum | Wed Oct 10 02:04:10 EDT 2007 | omidjuve
hi we use a no clean solder paste with the sn63pb37 alloy and our high frquency board doesn`t have any problem in test but after this product is finished now we use 2 different solder pastes 1. sn62 pb36 Ag.4 RA tape 2. NC type lead free with Ag i
Electronics Forum | Thu Oct 18 18:37:59 EDT 2007 | mefloump
Hello all, I was wondering if anyone knew of a stateside distributer for Yaskawa? I am looking for a VS-606V7 200V single phase, .55kW, model #CIMR-V7CCB0P4, in case you happen to have one laying around. It is for a Soltec Vitronics Selective Solde
Electronics Forum | Thu Oct 25 07:24:47 EDT 2007 | electronica
Hello, I'm considering to buy my first wave solder machine. We have small production, so we need an small machine, like bechtop wave solder machines. I have read that small machines as Novastar 8S, 12S, has some problems with complex PCB boards. Our
Electronics Forum | Mon Nov 05 13:33:08 EST 2007 | slthomas
Heck no, I mean we print relatively slower on complex boards, as in 1 inch/sec (25.4mm/sec), and maybe 2 inches/sec. (51mm/sec) on less complex boards. SMT is not a bottleneck in our plant and printing never the bottleneck in SMT, so I see no need t
