Electronics Forum | Thu Aug 21 20:43:21 EDT 2003 | davef
We just plant BGA in the paste when we place them with a standard flex machine. You know, just set your placement force to get the balls into the paste. Justin is correct about collapse.
Electronics Forum | Sat Sep 06 01:54:00 EDT 2003 | fastek
This is why it is so important to print out a copy of the machine's initial data and tape it inside the front cover. You lose memory and it's right there.
Electronics Forum | Mon Sep 08 01:52:25 EDT 2003 | CALVERA
Yes, You are right. Unfortunately we have only one machine and I did not print out these data. I would like ask you if it is no problem for you can you send me these data? Thank you for your support. CALVERA.
Electronics Forum | Thu Oct 02 08:32:31 EDT 2003 | Axl
Does anyone have this machine? Is it as good as the Ultra Print 3000? The head on this machine looks very similar to DEK's head, does it work the same way?
Electronics Forum | Tue Oct 07 16:27:15 EDT 2003 | jsloot
Can anyone tell me where I can order mylar sheets from. I need .040 thick opaque material. This would be used for printing paste and/or smt adhesive.
Electronics Forum | Mon Oct 27 14:06:10 EST 2003 | russ
Search the archives, plug in 0402 OR aspect ratio and you will find everything you need to know about area and aspect ratio. These are the critical formulas for paste release. Russ
Electronics Forum | Fri Dec 05 12:16:35 EST 2003 | pjc
The UP3000 & UP3050 are the same machine. The "3050" denotes an options set. The current model is an UltraFlex 3000, which replaced the UltraPrint 3000 series.
Electronics Forum | Sun Dec 07 13:16:23 EST 2003 | Kevin Gilbraith
With totally stable screen print (solder paste), placement and reflow processes, what is a world class target first time yield for good pcbs? How bad is 65% FTY. Your views would be welcome.
Electronics Forum | Thu Feb 05 17:33:08 EST 2004 | black5629
Yep, did that for many years in the 80's and early 90's. I wonder if their are suppliers that still do the emuslions? Anyone?
Electronics Forum | Fri Feb 20 13:55:32 EST 2004 | black5629
That will depend on so many factors: solder type / flux type sphericity of balls in paste stencil type (laser chem etch, electro form etc.) print paramaters I will tell you that it can be done.
