Electronics Forum | Tue Apr 10 13:43:13 EDT 2001 | mparker
since you did not define what visual process you are inspecting with I will ask is this "grainy" appearance being detected with the naked eye only? Are you using magnification? if so, what power? Is this a SMT solder or through hole solder problem?
Electronics Forum | Wed Jan 13 20:44:42 EST 1999 | Steve Gregory
Hello Sanjay! The cheap deal I use that Earl spoke of is called a SMarT Measure. It's a depth measuring microscope that uses the same principle of measuring optical focus that the units from Vision Engineering do ( if you've ever looked at any
Electronics Forum | Fri May 07 12:58:31 EDT 1999 | John Staley
| Kevin, I also work for a major adhesive manufacturer and would be pleased to send you several technical papers and some basic equipment settings for printing adhesives. If you will leave you name and mailing address on my voice mail (800)323-6106
Electronics Forum | Wed Aug 08 21:31:31 EDT 2001 | davef
OK, so yer stuck wid dees sembly guys, yer bosses are moroons wid pointy heads, and you gotta fix it. snafu. Paste printing: Measure shape, height, volume, area, registration, and paste bridging. Inspect/control solder paste deposits for fine pitc
Electronics Forum | Thu Mar 07 15:38:34 EST 2002 | kg
I can point to at least one recent study with contrary evidence that 60% of SMT problems are printing problems. The study is published in the APEX 2002 conference proceedings, a joint effort between Aglient and Nokia entitled 'Paste Inspection Study
Electronics Forum | Wed Jan 11 22:47:31 EST 2006 | davef
We didn't intend to light anyone's fur on fire [get anyone's underwear in a knot, roil the waters, have a cow man] about consultants. The Phil Zarrow wrote a useful paper that could help in evaluating paste. Here read it ... Evaluating Solder Paste
Electronics Forum | Tue Aug 29 07:10:14 EDT 2000 | Vinesh Gandhi
Hi All, As fas as I have read about AOI systems they all talk of being used at POst paste printing, Pre reflow or post reflow stages. Is there any AOI equipment available/being used which can do the soldering inspection of a complete PCA for SMT as
Electronics Forum | Mon Jan 10 19:13:46 EST 2000 | TNT
HELLO MIKE, THE PROBLEM WITH THE VIA BEING IN THE MIDDLE OF THE PAD CAN BE HANDLED. IF YOU ARE HAVING PROBLEMS WITH SOLDER FLOWING THROUGH AT REFLOW YOU MIGHT WANT TO CHECK YOUR VACUUM AT YOU SCREEN PRINTER. SOMETIMES THE VACUUM THAT HOLDS THE PCB
Electronics Forum | Thu Jan 10 17:20:25 EST 2002 | Matt Kehoe
Dont forget, if you dont want to print paste and deal with the challenges of placing components in wet paste, solid solder deposit can save you the cost of the stencil printer, while offering better first pass yields than traditional methods. It just
Electronics Forum | Tue Apr 09 16:19:37 EDT 2002 | Peter L.
Has anyone built using the ALIVH PCB (0402, 0.8mm pitch uBGA) on the SMT line? I would like to know any process issues (paste printing, p&p, reflow) related to processing this pcb. Specifically, what type of solder paste was used (no clean) and wha
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