Electronics Forum | Wed May 30 20:39:02 EDT 2001 | davef
Everyone has different needs. We all make trade-offs on costs versus benefits. So, you should determine the value and functionality of the Forums by participating in the current threads, scanning archived threads for pertinence and appropriateness
Electronics Forum | Thu Jun 21 07:06:18 EDT 2001 | gdstanton
I'm constantly being flooded with information by sales reps on x-ray and other types of equipment to inspect BGAs. Most of these items are simply beyond our capital budget constraints. I've witnessed dozens of demos, and to be honest, I really don'
Electronics Forum | Sun Jul 29 21:33:30 EDT 2001 | CAL
Your Ionograph and Zero-ion Values are set by you. There is no raw pass of fail criteria only the limits you set up. Ionograph is great for bare board resistivity (salt) test just as a pass fail for incoming inspection but this is all per your facto
Electronics Forum | Sat Jan 15 13:13:33 EST 2000 | Mark Wiegold
Steve, Basically in answer to your question, there is no real set number for defects. Defect rates will vary between products and companies. If my company was running the same product as yourself then there is no reason to suggest that the defect ra
Electronics Forum | Tue Dec 07 21:38:54 EST 1999 | Sosina outry
Correct me if i am mistaken, I always hear the circle is better fid mark than any. Due to shape and dimension, one value of diameter is needed while square you need width and lenght. beside whichever fid mark, the accuracy will base on cad and techn
Electronics Forum | Mon Dec 06 14:56:49 EST 1999 | Russ
The best way that I have found to calculate CPk for placement machines is to buy the kit that is usually provided by the manufacturer of machine. It usually consists of a glass plate and glass components that are scaled. You simply program the mach
Electronics Forum | Sat Dec 04 02:21:32 EST 1999 | Vinesh Gandhi
Hi All, I am facing a strange problem. One of my esteemed & valued customers has an unusual requirement of cleaning the board with IPA after soldering is complete. I am using alpha metals UP78 no clean sodler paste during reflow. This IPA cleanin
Electronics Forum | Mon Oct 25 16:12:52 EDT 1999 | Joe
Dave: Thanks for the info, I appreciate it. You start off by naming a +/- 2 sigma process, is that equivalant to an AQL of 0.25 ? What is a 6 sigma equivalant to? You mentioned the AQL at incoming inspection, what should that be in relationship to
Electronics Forum | Tue Jul 27 13:50:52 EDT 1999 | Mike Konrad
Aqueous Technologies manufactures the Zero-Ion ionic contamination tester. The Zero-Ion utilizes dynamic-based technology and has been assigned the highest equivalency value by the NAWC. It is among the most sensitive of all of the military-approved
Electronics Forum | Wed Apr 21 15:27:24 EDT 1999 | Murray Pulman
Hi Scotty sorry to stir things up but we assemble some seriously high value boards on a contract basis with vias through bga pads. However, not blind vias, so there are no cleaning issues & we use 6 though stencils to provide a little extra paste t
