Electronics Forum | Wed Mar 21 01:19:29 EST 2001 | PeteC
We're watching more carefully at post-print and pre-reflow inspections for products with the gold finger contacts. Not 100% sure the cause. SMT line people suspect primary cause is improperly wiped stencil. Do you know any other possible causes? We g
Electronics Forum | Tue Mar 27 05:52:44 EST 2001 | genglish
Peter, I have completed trials on various machines for cleaning both SMT stencils and misprinted PCB�s for solder paste and adhesive. Why do you have a preference with the cleaning solution, is this flexible? I can recommend a machine which we purcha
Electronics Forum | Mon Apr 09 13:28:06 EDT 2001 | slthomas
I've been wondering if I was the only person thinking this. There are so many print parameters that are programmable now on new machines (squeegee pressure, height, speed, snap-off settings, cleaning intervals) that the process would (in my oh-so-hu
Electronics Forum | Tue Apr 10 12:56:23 EDT 2001 | slthomas
Didn't you hear? Fendelaz went out of business and sold the rights to the Magnaplancil to Amahlmahay. Sure, all the standard variables still affect the print quality (aka registration and volume) but if the machine controls everything but paste di
Electronics Forum | Thu Apr 05 22:35:39 EDT 2001 | davef
This is similar to the question Steve asked earlier in the week about mixing OA and NC fluxes. I can't tell you. The answer would be provided by laboratory analysis. Top flight labs are: Trace, CSL, and Robisan. If you can't find contacts e-mail
Electronics Forum | Mon Apr 09 07:12:17 EDT 2001 | Reg
I was wondering if anyone could advise me as to the thickness of a selective jig for wave solder. We currently run with a difference of ~6.7mm from the base of the jig to the base of card which to me seems too deep but this is what our jig manufactur
Electronics Forum | Tue Apr 10 11:39:29 EDT 2001 | brownsj
One of the reasons for a grainy joint is the cooling of the joint after reflow. Check your reflow profile, not just the preheating and reflow section but also the cooling zones. It works the same way as molten rock. If it cools slowly you get pumice
Electronics Forum | Sat Apr 14 03:34:23 EDT 2001 | kpliew
Hi Greg, If u don't mind my recommendations. U may want to try to convince them that by using smaller pad size , u save solder paste in the end of the day (provided u are doing mass volumes). It is another way of getting around to ur idea of changin
Electronics Forum | Thu Apr 19 09:37:31 EDT 2001 | marquesj
To this Guy`s Author: Michael Parker Author: Dreamsniper Caso pretendam falar a serio enviem um e-mail pessoal e deixem o forum em paz, caso contrario deixem trabalhar quem gosta. sorry, couldn't resist!!! To: Mr. Dave F Thank`s for your help.
Electronics Forum | Thu Apr 19 21:49:29 EDT 2001 | davef
SCREENING... 1. Is type 4 paste necessarily required? [No, not unless you are using it for some other purpose.] 2. Is No-Clean Ok to use? [YES] 3. How thin stencil is required? 5 mils? [5 is OK, but I wouldn�t base the decision on the 0201. 6 mil is
