Electronics Forum | Wed Mar 14 18:17:40 EST 2001 | mparker
Some thing to watch out for is the cure spec for the adhesive. Will that match with your solder paste reflow spec? You will have two dissimiliar materials going through endothermic reactions at the same time. You could end up with under cured adhesiv
Electronics Forum | Mon Sep 03 16:51:58 EDT 2001 | edmentzer
We have stored PCB's in the refrigerator twice when our old pick and place died during production. One time the boards were in the frig for two days. I put the boards in a tray and covered the tray with plastic food wrap. We waited about two hours
Electronics Forum | Wed Aug 13 15:13:14 EDT 2003 | caldon
You have not seen kicking and screaming as 1,1,1,Trichlorethene phase out actually had a drop in process with cleaning soaponifier options. Lead Free is not a drop in process by any means. Gary I hope the kicking will be with soft shoes my friend.We
Electronics Forum | Sat Nov 05 03:33:28 EST 2005 | grantp
Hi, I might not have been clear in my previous post on this, and the problem we saw is the hot metal of the oven walls caused IR transmission of heat into the board, and thats why the point in time from the start of the profile to the point the PCB
Electronics Forum | Mon Jan 16 16:11:25 EST 2006 | slthomas
We currently use Armakleen E-2001WS in our Trieber inline cleaner and I'm trying to review the process and look into upgrading the chemistry if it's appropriate. After a little research I've concluded that I don't have nearly the information I need t
Electronics Forum | Sun Nov 27 05:06:25 EST 2011 | siaomuay
Hello I'm just study PCB in my company. I found many Surface PCB have some contaminate and can not specify what it is. Size is around 2 mm2 . Sometime I send to supplier and they said it is solder paste or some dirty flux. please see contaminate1
Electronics Forum | Tue Sep 05 14:40:08 EDT 2017 | rgduval
We emailed off forum about this...and I'm wondering how things are progressing. As I noted in email, our issue was the nozzle change was resulting in too many nozzles being out of the same vacuum channel on the tool box. I can't remember how it was
Electronics Forum | Wed Jul 14 11:36:56 EDT 1999 | Jimmy Strain
| | | Hi All, | | | Does any one experienced the solder on gold finger after | | | reflow. Its about 5 to 8 mils diameter . | | | We'd clean the entire screen printer, mounter & reflow as well, | | | but doesn't help much. | | | | | | | | Mr Kong..
Electronics Forum | Mon Jun 27 10:25:29 EDT 2005 | Paul
Hi Erik, looks like there's not much appetite for this debate on this forum. Possibly because not many use them and aren't in a position to confirm or deny what we know. We use our pumps 6 days a week, 24hrs a day so it's a very dynamic proc
Electronics Forum | Wed May 27 08:46:25 EDT 1998 | Dave F
| | | | We understand that testing for ionic contamination and surface insulation resistance measure different properties. We assemble printed circuit boards for other companies. We will not get combs on 90% of the boards that we assemble. | | | |
