Electronics Forum | Mon Oct 25 03:43:26 EDT 1999 | Joe
Hello, Acceptance Quality Levels vary from company to company and product to product. I would like to know what AQL's are being used in the different markets, (military, telecommunucations etc.). What is the standard level used? What
Electronics Forum | Tue Oct 26 13:57:34 EDT 1999 | Dave F
Joe: Both dpmo and measuring solder paste height are good topics to practice your SMTnet archive searching skills. Yes, some microscopes can be used to measure solder height. Good luck Dave F
Electronics Forum | Thu May 10 13:13:35 EDT 2007 | bkgsmtnet
What softwares are you using for Quoting Electronics Contract Manufacturing services. Including Receiving, Kitting, SMT, Thru Hole Hand Solder, Thru Hole Wave solder, Hardware/boxbuild, QA, Shipping, Buying. Also scheduling jobs thru your floor. Plea
Electronics Forum | Mon Apr 02 10:20:40 EDT 2007 | realchunks
Hi Chris, Yes, my hand is up. But the problem is WHY you are stock piling printed boards. Is it a single printer used to feed various lines? I would think that since you are hand placing parts, that this printer would be able to keep up. Obvious
Electronics Forum | Fri Apr 06 01:46:59 EDT 2007 | Haris
Basically its spec. gives surety regarding its chemical and physical properties. if he doesnt follow the spec then may be he may find good physical soldering appearance but chemically it may goes down through Electrical or Environmental testing and i
Electronics Forum | Mon Apr 09 16:46:54 EDT 2007 | stepheniii
Basically its spec. gives surety regarding its > chemical and physical properties. if he doesnt > follow the spec then may be he may find good > physical soldering appearance but chemically it > may goes down through Electrical or Environmental
Electronics Forum | Mon Oct 25 15:45:11 EDT 1999 | Dave F
Joe: Lemme see, you�re talking about controlling your manufacturing process within 4.6 defects per 100 opportunities or a 4,600 dpmo rate, a cumulative 99.95 acceptance rate, or a �2 sigma process, right? So, it�s fairly basic stuff, eh? First, yo
Electronics Forum | Thu Jan 08 15:49:10 EST 2015 | emeto
I bet you that the problem comes from the ENIG brittle solder joints. About low temperatures I think you can go to the absolute 0 and the device should still work.
Electronics Forum | Thu Aug 10 11:32:34 EDT 2017 | dleeper
You could always take a scrap board, paste it, and let it sit out over night. Reflow it and then you should have a nice visual aid, covered in solder balls and grainy, irregularly shaped solder mounds.
Electronics Forum | Wed Aug 09 11:59:19 EDT 2017 | dleeper
As you already know, it depends on the paste. There isn't really a rule of thumb, but less time exposed it better. The issue is the flux exposure to the air and ambient conditions. The flux can evaporate or absorb moisture from the air. If the paste
