Electronics Forum | Mon Mar 12 08:06:44 EDT 2007 | davef
Q1.� is it mondatory to test all components and paths in the PCBA; and check all soldering joints? A1. Nothing is mandatory. You do ICT to prove some component functionality and check manufacturing process. ICT test coverage is driven by factors i
Electronics Forum | Fri Aug 08 11:37:09 EDT 2008 | pjc
Yes, sure. In fact in some applications ICT is coming back. Mainly due to the fact that more and more SMT discrete components have no markings, so AOI cannot tell you if you have the correct value on the PCB. Fixed pin or flying probe ICT is a valuab
Electronics Forum | Thu Jan 16 15:55:31 EST 2003 | MA/NY DDave
Hi I have a funny feeling that Mike Konrad and I know each other from IBM-Endicott days, yet I could be wrong. It would be funny?? Mike gave a good answer. The Rosin or Rosin Mildly Activated Flux (RMA) if on the board at ICT (In Circuit Test) wil
Electronics Forum | Fri Sep 10 09:39:32 EDT 2004 | Bryan Sherh
Dears, I've a board with OSP surface finish,and I planned to print solder paste on the test pad for easy ICT, because the probe can't reach the OSP covered pad.But to my surprise,after reflow there's much flux residue on top of test pad(or solder) an
Electronics Forum | Tue Jul 31 04:45:42 EDT 2018 | robl
Depends on what sort of outfit you are working for, and what you are building. A lot of CEMs are doing Flying Probe or ICT on the boards ahead of investing time building into units or adding parts that prevent access to rework. We have a combination
Electronics Forum | Thu Mar 15 17:19:12 EST 2001 | mparker
Are the tin/lead ratios compatible betweem HASL and wave solder? Probably are, just a remote possibility. Flux application is? bubbler, sprayer? Either way, are you getting good misting, coverage on those teeny 0.5mm test points? If not, then no
Electronics Forum | Mon Jun 04 10:40:37 EDT 2012 | davef
I'm not aware of any such stipulation about witness [probe] marks for assembled boards, per se. Certainly, witness marks should not affect the intended performance of the assembly, you know, like damaging the solder connection or smudging solder mate
Electronics Forum | Sat Mar 18 07:22:37 EST 2000 | davef
Cartman: Ah, another "hidden cost" of no-clean. I love no-clean people they're putting themselves out-of-business and they don't even realize it, but at least they're saving money. Enough pontificating, "yes" to all of the above. 1 Yes, no-cleans
Electronics Forum | Tue Aug 07 21:17:24 EDT 2001 | davef
This provides LT 3 misses /1M hits. * Probe all points on one side of the board. Bonus => This lower fixture cost. * Test pads and vias: GT 25 thou from other land traces. * Small [LT 5 ohm] resistor measurements: Use two pads at each end and do 4-
Electronics Forum | Tue Mar 07 21:35:16 EST 2006 | Cal Kolokoy
Samir, From experience, the only board test situation where tented via's have difficulty with contact is with a Flying Probe type tester. Otherwise, for traditional ICT, the force of the pogo pins, correct probe type, and fixture design should do th
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