Electronics Forum | Fri Feb 17 13:10:34 EST 2006 | amol_kane
I have Immersion Ag and Immersion Sn LF boards that were waved using SAC305 alloy. I have a lot of tears/shrink voids in the waved connections. I am aware that SAC305 in wave has a propensity of shrink tears/voids due to the non eutectic property of
Electronics Forum | Tue Oct 03 17:04:07 EDT 2006 | cuculi54986@yahoo.com
Glenn, What alloy are you using for Pb-free HASL? You say tin copper nickel, but is it SN100C? Against manufacturing engineering's recommendation, my company specified simply "Pb-free HASL" as the finish for our Pb-free PCBs. One of our suppliers
Electronics Forum | Sat Feb 10 04:17:40 EST 2007 | Grant
Hi, I don't know about other peoples experience, but I have decided i absolutely HATE auto teach. The problem is with auto teach you just measure one component, and then you need to open up the tolerance to get an acceptable pass rate. Which means
Electronics Forum | Mon Mar 12 08:24:30 EDT 2007 | rgduval
ICT is generally a manufacturing verification test. Coverages vary depending on the board. I've run lots with as low as 25% coverage on the board (but produced 98% FPY post board assembly). Functional test is exactly what it sounds like. Checking
Electronics Forum | Mon Mar 17 18:37:59 EDT 2008 | aqueous
We manufacture both bulk and localized ionic contamination testers. My answer is from the perspective of the cleanliness testing method. The issue with all bulk ionic contamination testers (Ionagraph, Omegameter, Zero-Ion), is that they test the en
Electronics Forum | Mon Mar 21 02:41:29 EDT 2011 | kemasta
Hi It's me again. Our products need to pass a chamber test 45c/36hrs after the PCBA completed batch of functional tests and assemble in to case. We found 1 unit was functioning for 24hours in the chamber, but hang after that. We tried to re-boot the
Electronics Forum | Mon Aug 27 08:52:57 EDT 2012 | rgduval
Reese, We would agree about the value of an ICT system, in a general manufacturing environment. However, a couple of notes apply: 1. ICT isn't a catch-all, either, and should be used to verify the process, not validate it. Quality should be buil
Electronics Forum | Thu Feb 28 10:22:46 EST 2013 | rway
If your silkscreen is too close to the toes of your leads, you can bring the lead bank inspection box in a little bit to compensate. I haven't had many issues with tantalum caps. I inspect those under white light with no filter just fine, but then
Electronics Forum | Mon Jan 25 15:51:02 EST 2016 | aemery
SP1 is a bi-metal spring loaded switch or the "air fault" switch on the main air manifold that detects the presence of an appreciate amount of air being supplied to the machine. Air pressure overcomes the adjustable spring and closes the contacts.
Electronics Forum | Mon May 02 23:42:44 EDT 2016 | ttheis
I have a strange issue where all 4 spindles of head 1 on my GSM1 are able to place small parts without a problem until the very end of the routine where a large electrolytic aluminum capacitor is placed. The part is successfully picked out of the fee
