Electronics Forum: undetected (Page 1 of 1)

AOI false fail PPM

Electronics Forum | Thu Aug 07 22:56:50 EDT 2008 | dlocampo

First all, you must define the specific defects that you wanted to screen out by your AOI system based on its capability, so you can allocate the undetected defects on your other means of inspection methodology. Then optimize your AOI inspection para

Automated soldering station (pros and cons)

Electronics Forum | Fri Jan 29 11:23:54 EST 2010 | ppwlee

Smtnet, I am looking at pros and cons for automated soldering. The application is a simple multi pin through-hole soldering on a high volume manual assembly line. The goal was to eliminate defects associated with missing solder pins which goes undet

measument of paste thickness after Screen Printing

Electronics Forum | Tue Sep 07 06:32:32 EDT 2004 | C Lampron

Dhanashekar, Yes this is an important proces control tool. This will show if you printer setup is correct however, I put more importance on coverage. If your paste height is 1 mil shorter than it should be, you may need to look at your printer setup

SMT optimization and improvement

Electronics Forum | Fri Feb 16 11:07:25 EST 2007 | stepheniii

I'm not sure if anyone mentioned the single most important factor. p.m.'s. If the nozzles are getting dirty and clogged it's not going to do a great job of picking parts up. Don't think in terms of variation. It's there it's unavoidable and undet

ESD Protection - Hair

Electronics Forum | Thu Aug 30 22:44:05 EDT 2012 | rway

I'm not saying that any unexplained failure is caused by ESD and I certainly am not promoting fear. I sleep very well at night (except after eating Mexican food, which can cause discharges as well). What I am saying is that ESD is a real threat and

Lead trimming

Electronics Forum | Fri Jul 29 13:30:43 EDT 2016 | gregp

Versatec specializes in the remanufacture of Contact Systems machines, most notably the CS-400E component locator with programmable cut and clinch. these machines are field proven over the past two decades and provide many benefits when utilized: 1.

ESD Protection - Hair

Electronics Forum | Thu Aug 30 19:57:21 EDT 2012 | rway

How many failures? This is hard to quantify. How could you unless you witnessed a spark and all of a sudden the product no longer works. The truth is you could have a discharge and not even know it. It could brush against your clothing, or as we

Seeking Thru-hole Process Flow Solution

Electronics Forum | Tue Oct 29 14:39:51 EDT 2013 | gregp

Hi Jake, A few questions: Is your CS-740 JIT bin dual picker or single picker? If it is a single picker then the answer may be as simple as getting a dual picker. Next question...what is your bin usage? Can you double up some of the more common part

BGA Rework

Electronics Forum | Thu Apr 10 09:28:14 EDT 2003 | chrissieneale

Thanks for your replies guys, there's some good info there. Dave, answers to your questions: The stencil was initially a big problem as with the Egineering Model's (EM's) and Engineering Qualifing model (EQM's) we kept getting short circuits due to


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