Electronics Forum | Wed Sep 07 03:03:35 EDT 2005 | Milroy
I am engaged with SMT production and we are going to have a brand new SMT line and I am studing about the screen printing and I have seen most commonly used stencil thickness is 6mil and I need to know what is the best solder paste height we can achi
Electronics Forum | Thu Sep 15 07:25:55 EDT 2005 | Base
Try to get hold of the Philips/Assembleon Cad2Cad program, it is (or was) free. You can import several (proprietary) file formats and centroid files and export it as VIOS text-files. All you need to do then on the machine is assign the correct compon
Electronics Forum | Wed Sep 21 12:14:47 EDT 2005 | Rob
It's quite a big cap so try taping over about 25% of both apertures to restrict the volume of paste printed then see what happens. Also, is anything interfering with the part during placement? or are you 100% sure it's going into the oven ok? if no
Electronics Forum | Fri Sep 23 04:38:34 EDT 2005 | Rob
Hi, We used the 1 mil for 0402's etc. Admittedly most of our experience was on 2.6 & 4 mil as we mainly used the GSM's for oddform & fine pitch, but we found that the smaller chips went down better & more accurately with the smaller camera. Oh yeah
Electronics Forum | Thu Sep 22 18:23:14 EDT 2005 | arnie
Hi, I am having a problem with component position on a flex circuit. It is an eight up panel. The flex circuit is mounted on to a piece of fr4 with presure sensitive adhiesive, this is done out of house. The problem is, I will locate the parts on one
Electronics Forum | Thu Sep 29 13:39:08 EDT 2005 | PWH
Universal GSM1/2 go W18.000� x L20.000� depending on configuration. I have done boards as much as 22" long with some creativity. GSM1 runs about 4500 pph (approx. 2500 pph realistic) and GSM2 9000 pph (approx. 4000-5000 pph realistic). Cost used fo
Electronics Forum | Fri Oct 07 04:25:16 EDT 2005 | GS
Thanks everybody for your comments. I am not going to move to stencil waterjet cut. But because recently talk to people who want to move in that way, so that's why I am trying to get infos as much as it possible in order to learn what does it mean a
Electronics Forum | Sun Oct 09 10:37:06 EDT 2005 | Mika
Are You planning to produce a RoHS compliant product? If You just are going to reflow non RoHS compliant components with a "RoHS oven profile"; make sure that the comps. can withstand the higher solder temperature. As we see it; it is a big reliabil
Electronics Forum | Tue Oct 11 22:54:49 EDT 2005 | KEN
Yes, let the nightmare begin. Most electrolytic caps will not meet the 260 minimum and many will not even make 250. These do not meet IPC J-std-020 standards for lead free soldering. I had one batch of LF boards go through with a spec. of "not
Electronics Forum | Wed Oct 26 07:19:25 EDT 2005 | trd
Agreed....Rob....and also Ken its unfair to blame the team when the owner wants a 1980 station wagon to run at 250 mph!!!!! The greatest nascar team would have problems making that happen. And even when you explain....that you need a corvette to go 2
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