Electronics Forum | Tue Nov 01 19:53:23 EST 2005 | KEN
Um...for you mylar guys....esd safe? Why worry about the first two prints. Worry if they power up or not when sent to funcitonal test. Zapp! I think I know where this is comming from. It is not that uncommon to have a sacrificial print. However,
Electronics Forum | Sun Feb 04 15:06:20 EST 2007 | Scotty
Profile should have a longer cool soak. Verify as was mentioned all pin/fixture support through out the entire process. Print, Place, pre reflow hand load, post reflow, carriers, ICT, Depanel and FCT. Conformal Coated or Potted? Mylars work well for
Electronics Forum | Mon Oct 22 10:35:54 EDT 2007 | mulder0990
We use Microsoft Access to track our feeders. I have made a system for the machine operators to tag the feeders when they run into problems. We seem to be having a lot of pitch issues. I am wokring on geting a calibration jig to solve that issue.
Electronics Forum | Fri Jul 06 04:55:59 EDT 2012 | ccgooi
I have fabricated a artwork of stencil on a mylar and make comparison on PCB and Stencil in order to confirm if there is any PCB stretching at both end. The results are comparable for both stencil and PCB without any stretching . So,I assumed that th
Electronics Forum | Tue Jun 17 16:10:01 EDT 2003 | russ
First, what would you define as semi-automatic? For SMT production you might need a screen printer (these can be anything from full manual to full auto. The low end printers manual require each board to be aligned with a piece of mylar prior to p
Electronics Forum | Mon Jan 15 16:32:46 EST 2001 | Darby
Adrian, I'll go again. The term "snap off" on it's own refers to the distance between the bottom of the stencil and the top of the pcb. Sometimes referred to as "print gap". As you prefaced your question with "squeegee snap off" I thought you were as
Electronics Forum | Thu Nov 16 22:01:16 EST 2000 | Early Moon
I promised never to do this - BUT only for you needy folks when I have nothing else to do. And Dave's basically a good person though not as needy as most really needing this stuff. 1) Ensure internal Gerber data really matches board and stencil (Ger
Electronics Forum | Mon Dec 23 18:06:38 EST 2002 | jersbo
Tried and True is counting your components if there is any indication of loss... this is a great TOPIC... unfortunately there are many ways to lose components. Feeder setup,problems with a feeder while in the machine(IE mylar problems or wrong step)
Electronics Forum | Mon Sep 13 04:11:27 EDT 1999 | Earl Moon
| | hello | | | | having a problem with one customers bare boards not matching my stencil apertures. i design stencils based on gerber data and reduce up to 15% on some pads. do some board houses reduce pads after receiving gerber data???why would
Electronics Forum | Mon Jan 28 16:48:14 EST 2002 | djarvis
Printing with adhesives is no big deal so don't let the sales types try to mystify the process and convince you that they have the only stencils/adhesives/knowledge that can possibly get you through this "trying time" - at a price. Start with 0.010"
