Electronics Forum | Wed Jul 21 10:05:22 EDT 1999 | Mark Quealy
| | | I recently switched from solder paste in 500 gram jars to 500 gram tubes. I did this to try to limit the time the paste is exposed to the room environment. But we have a need to clean the stencil every 4 - 5 boards which means taking the bulk p
Electronics Forum | Mon Jun 14 03:54:32 EDT 1999 | Charles Stringer
We have been using Alpha Tetra/DEK Vector for the last 3 years. Prior to that we were using mesh on frame. We do about 15 job changes a day and our main runners are loaded about 4 times per week. In the three years we have been using the system we h
Electronics Forum | Mon Jun 14 06:15:18 EDT 1999 | wayne sanita
| We have been using Alpha Tetra/DEK Vector for the last 3 years. Prior to that we were using mesh on frame. | We do about 15 job changes a day and our main runners are loaded about 4 times per week. In the three years we have been using the system
Electronics Forum | Mon Jun 14 15:05:10 EDT 1999 | John Thorup
| | We have been using Alpha Tetra/DEK Vector for the last 3 years. Prior to that we were using mesh on frame. | | We do about 15 job changes a day and our main runners are loaded about 4 times per week. In the three years we have been using the sys
Electronics Forum | Tue Jun 15 18:02:53 EDT 1999 | MMurphy
| | We have been using Alpha Tetra/DEK Vector for the last 3 years. Prior to that we were using mesh on frame. | | We do about 15 job changes a day and our main runners are loaded about 4 times per week. In the three years we have been using the sys
Electronics Forum | Thu Mar 05 23:52:26 EST 1998 | Ron Costa
| Hi Ron, | Your question really opens up a "Pandora's box", but when you say you're not able to print perfectly, what is it exactly that you mean? Is the print lacking volume? Is it mis-registered? Are you bridging? Also, what printers have you used
Electronics Forum | Sat Feb 10 17:12:03 EST 2001 | rpereira
I admit, 16 mil QFP printing is very challenging but if all your control factors (print speed, etc...) are setup correctly (through DOE) extremely high yields can be achieved and more importantly a repeatable and robust product will be manufactured.
Electronics Forum | Thu Mar 05 07:49:00 EST 1998 | Steve Gregory
Hi Ron, Your question really opens up a "Pandora's box", but when you say you're not able to print perfectly, what is it exactly that you mean? Is the print lacking volume? Is it mis-registered? Are you bridging? Also, what printers have you used? Do
Electronics Forum | Mon Sep 17 17:09:32 EDT 2001 | jschake
Flux: No-clean pastes tend to have a wider print process window in terms of print speed and pressure. More importantly, no-clean pastes are more tolerant to changes in temperature and humidity. They also exhibit longer stencil life than water-solub
Electronics Forum | Thu Oct 26 08:59:56 EDT 2000 | Antonio A. Medina
Ok guys, I need help. Here's the deal. We're getting micro solder balls under discreets on the bottomside of the board. Here's my set up... MPM screener w/vacuum plate 6 mil metal screen with 90% circular (rounded) apertures 7 mil (measured) past
