Electronics Forum | Fri Nov 17 05:40:48 EST 2000 | Wolfgang Busko
Hi Dave, I think your approach is more than some others do as incoming inspection. We just look for - damage of any kind - measure the thickness - measure a critical aperture for the correct size (reduction) - look for smooth walls - do Earls "look
Electronics Forum | Sat Sep 30 14:50:35 EDT 2000 | Elfego
Thanks for your replay,The line should be capable of making 200pc boards by hour 600 components by pc board,placing chips 0402 and IC's 144 pins 20 mils, also has to work 24 hours a day and 12 hrs saturdays and Sundays. these are products for the aut
Electronics Forum | Tue Oct 03 15:27:37 EDT 2000 | Wolfgang Busko
What�s wrong with your printing process and what improvement do you expect from dispensing ? I can imagine that it�s more convinient just to have this process inline, no worrying about stencils, cleaning, changing printer setting, just replacing a ca
Electronics Forum | Tue Sep 19 22:15:53 EDT 2000 | Sophia
Hi guys, I have been working in the SMT pick and place process for five years, and now I'm responsible for the solder paste printing process, and one thing that I notice is that the actual process that we have is to poor, actually our main defects a
Electronics Forum | Tue Jan 23 10:48:05 EST 2001 | genglish
Hi kirks, I don't want to appear to be selling a product for a particular supplier, but we recently (six months ago) purchased a Kerry SC1000 stencil / misprinted cleaning system. We too were experiencing solder beads in via holes left behind after
Electronics Forum | Thu Sep 14 11:39:59 EDT 2000 | Steve Thomas
Ahhhh, Dave, I'm glad I can still count on you for some real cutting edge info. yuck, yuck. Believe me, there's a lot more information available on how to resolve no-clean issues than there is on how to keep this stupid board wash/DI/Stencil wash/
Electronics Forum | Thu Aug 31 00:07:24 EDT 2000 | Ramon I Garcia C
I Kyung: I'm not sure if we are working with PIHR but we insert some pines in a PCB with a pin inserter machine, after that we run this pcb in a screen printer and put over its solder paste, and then run in a chip shooter and then IC placer and f
Electronics Forum | Sat Aug 05 12:12:05 EDT 2000 | Ramon I Garcia C
Hello Friends: I'm new in SMT process, I have a problem with little balls of solder beside of the component, I'm tried reducing the apertures in the stencil and making home base, some times the balls desappear, but some time not, and some times
Electronics Forum | Thu Jun 29 10:38:04 EDT 2000 | John Thorup
Hello Christopher I don't know if there is any kind of official standard but I can tell you that the HADCO DFM manual specifies a nominal thickness of 50-1500u" with an option for 100-1000u" and the Merix DFM manual specifies 30-200u" Our boards (fro
Electronics Forum | Tue Jun 27 10:51:42 EDT 2000 | Ioan
Hi Bill, there are a couple of things you should check. Most likely you have too much paste which is squashed at the insertion of the cap. - the paste height, around 7 mils should do. Too much paste will cause shorts under the cap at insertion which
