Electronics Forum | Thu Sep 27 16:40:12 EDT 2012 | davef
Ideally, shelf life should be twelve months from application, but not all OSP's are the same so check manufacturer's instructions
Electronics Forum | Tue Jan 07 12:12:32 EST 2020 | emeto
Hello Mikey, I am curious, why did you send your board out for manufacturing? Why didn't you build the prototype yourself?
Electronics Forum | Wed Aug 19 12:20:24 EDT 1998 | MARK J.
| Hi there, | I'm actually facing a lot of trouble with PCB's presenting up to 3mm of bow /twist at reception i.e. before assembly. The PCB size is 220 by 230mm. The boards are to be assembeled SMD double sides with 05.mm pitch on both sides. In orde
Electronics Forum | Tue Aug 09 11:56:01 EDT 2005 | Rob
We sometimes use a peelable mask the the PCB manufacturer (board house) adds as part of their process. It may seem an expensive option but avoids: Raising P/o's for tape/peelable mask as consumables booking & inspection Booking out to the shop floo
Electronics Forum | Wed Aug 19 08:00:55 EDT 1998 | Earl Moon
| Hi there, | I'm actually facing a lot of trouble with PCB's presenting up to 3mm of bow /twist at reception i.e. before assembly. The PCB size is 220 by 230mm. The boards are to be assembeled SMD double sides with 05.mm pitch on both sides. In orde
Electronics Forum | Fri Nov 06 11:39:17 EST 2009 | 14367
As you know, the H1N1 virus is on the move, and we are trying to take precautions. We wish to use a 60% alcohol based lotion for disinfecting our hands. It has been questioned if the added substances could be detrimental to electronic assembly board
Electronics Forum | Mon Mar 30 11:02:37 EDT 2020 | SMTA-Eric
As we navigate through the CORVID-19 pandemic, many essential manufacturing facilities are still on line and operating. Some at reduced or modified schedules in following the guidelines to help reduce the spread of this virus. My question is in rega
Electronics Forum | Tue Dec 16 14:48:03 EST 1997 | Justin Medernach
| Q1. | As part of a Final Year Thesis I am currently undergoing an in-deph study of the Screenprinting process for MPM 3000 Screenprinters. | Ultimately I will be setting up control charts on line. | Does anybody have suggestions in this area ?, I h
Electronics Forum | Fri Oct 22 11:53:53 EDT 2004 | C Lampron
Hi Christina, What would you be basing the yields off of? Is it solder defect, component placement, etc....? I have worked for a flex house for quite a few years. You are right. The Polyimide is very dimentionally unstable. (even more so on humid da
Electronics Forum | Wed Jan 09 15:24:49 EST 2002 | mregalia
Thanks Chris. As I was writing my last message our mailperson dropped off the latest issue of Circuit Assembly. It has an article on mixing SMT and COB on the same board. The author recommends as a compromise 10-20 micro inches of gold over 70-100 of
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