Electronics Forum | Tue Apr 20 14:25:05 EDT 1999 | Stephen Smith
I am wondering if anyone has any info regarding solder paste misprint clean-up procedures for Entek Plus CU-106A PCB's utilizing a water-clean solder paste. In a implementation procedure they recommend a 2-3 minute wash cycle with the following crit
Electronics Forum | Mon Apr 19 17:33:17 EDT 1999 | Tuffty
25 PPM)! | | | | 1. Is there a better process to solder the leads of QFP's with lifted "minute" lifted leads still having a realiable solder joints? | | | | 2. Or has anybody tried modifying solder pads and use thicker solder paste deposit to compe
Electronics Forum | Sun Apr 18 14:26:36 EDT 1999 | Steve Gregory
| | Please visit our Web site, especially 'link page', to get some hint for roll typr of cleaning wiper for automatic screen printers. http://www.squeegee.co.kr | | | Idiot: I wouldn't visit your site if I had to start using toilet paper. Keep yo
Electronics Forum | Sun Apr 18 19:16:28 EDT 1999 | Wayne Bracy
| | | Please visit our Web site, especially 'link page', to get some hint for roll typr of cleaning wiper for automatic screen printers. http://www.squeegee.co.kr | | | | | Idiot: I wouldn't visit your site if I had to start using toilet paper. K
Electronics Forum | Thu Apr 15 16:27:33 EDT 1999 | Nancy V
I had someone suggest that they weren't really necessary as long as your process is good. Is this just a way to help you keep an eye on your process? I was thinking, as we set up our line, our money would be more well spent with controlling the pro
Electronics Forum | Fri Apr 16 11:07:53 EDT 1999 | Vic Lau
| | We process both tin/lead plated boards and gold plated boards in our surface mount group. I have used Sn62/Pb36/Ag2 solder paste on all gold plated boards to help prevent gold scavaging. To reduce the amount of different solder pastes we have t
Electronics Forum | Tue Apr 13 23:35:44 EDT 1999 | Jeff Sanchez
| | Hello. | | | | I'm now investigating the current technological issues | | on surface mount devices. | | For example, I want to know the limitation of | | the surface mount machine. | | | | Where can I get the materials for this purpose? | |
Electronics Forum | Tue Apr 13 23:41:15 EDT 1999 | Jeff Sanchez
| | | Hello. | | | | | | I'm now investigating the current technological issues | | | on surface mount devices. | | | For example, I want to know the limitation of | | | the surface mount machine. | | | | | | Where can I get the materials for thi
Electronics Forum | Mon Apr 12 19:28:26 EDT 1999 | Tom B
Netters, When I reflow a PCB there is a discoloration of silkscreen and mask. It appears if Profile is too hot! But I dont think so, maybe I'm wrong? 1. Kester 293 no clean 2. 2.1 C/s for 30s to 150 C 3. .5 - .7 C/s for 60s to 185 C 4. 1.5 C/s u
Electronics Forum | Tue Apr 13 18:11:00 EDT 1999 | Jimmy Strain
| Netters, | | When I reflow a PCB there is a discoloration of silkscreen and mask. It appears if Profile is too hot! But I dont think so, maybe I'm wrong? | | 1. Kester 293 no clean | 2. 2.1 C/s for 30s to 150 C | 3. .5 - .7 C/s for 60s to 185
