Electronics Forum | Sun May 24 21:12:59 EDT 2009 | keith78
I have a problem recently to qualify QFN package on solder joint reliability. The pcb thickness stated in IPC-9701 is 2.35mm but from the in-house test, QFN surface mount on 2.35mm thickness PCB board have a short cycle to failure due to higher CTE m
Electronics Forum | Mon Aug 25 02:57:43 EDT 2014 | arjunkolavara
We are in the process of qualifying our SMT lines for the High Melting Point Solder with alloy composition of 93.5 Pb 5 Sn 1.5 Ag.If any one has already an experience with this alloy,kindly do give ur inputs on the process of profiling . The reflow d
Electronics Forum | Thu Dec 12 17:48:21 EST 2019 | davef
You proved that the standard solderability test of components may be effective for assessing aged components. Curious Minds Can you get the authorization to use a more aggressive flux? Will that flux solve the problem? What's it going to cost to qu
Electronics Forum | Fri Nov 04 12:55:45 EDT 2022 | ibtonystark
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Electronics Forum | Wed Sep 15 11:08:45 EDT 1999 | Dave F
| I am looking for help on doing smt equipment qualifications. I need to find some examples to follow. The equipment to be qualified is a Stencil Machine, Pick and place machine, and Reflow oven. We manufacture medical devices so it has to be somewha
Electronics Forum | Fri May 15 18:09:00 EDT 1998 | Earl Moon
| | | We understand that testing for ionic contamination and surface insulation resistance measure different properties. We assemble printed circuit boards for other companies. We will not get combs on 90% of the boards that we assemble. | | | We h
Electronics Forum | Mon Dec 11 20:34:35 EST 2000 | Dave F
I sometimes get "fuzzy" on how different companies differentiate between the activities and responsibilities of various positions. [Read: I don't understand the difference between a manufacturing engineer and a process engineer] Regardless, I'd get
Electronics Forum | Wed Sep 13 12:36:14 EDT 2000 | Steve Thomas
In the following thread, http://www.smtnet.com/electronicsforum/view_message.cfm?message=9584& John Thorup touched on some applications where no-clean fluxes could be a bad idea. I'm looking for some more detailed info. (papers, references, texts
Electronics Forum | Fri Jul 14 16:25:32 EDT 2000 | Dave F
Awww Mike, I loved eating that glue. It can�t say that it tasted good, I can say that I ate my share. I�ve got one of those talkintoit stream of unconsciousness plugin� thangs for my computer. Just rattle on and the computer types "umm" "er" and m
Electronics Forum | Wed May 17 17:27:32 EDT 2000 | Michael Parker
Janet- Sorry you didn't see the train coming before you committed. Start with voracious readings of everything in the archives in this forum. Once you are armed and dangerous there is some very helpful people here that can support you. It would help
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