Electronics Forum: nasa (Page 4 of 9)

Another interesting article on tin whiskering

Electronics Forum | Thu Feb 17 11:08:42 EST 2011 | patrickbruneel

You can find the full Nasa-UA report in PDF format here: http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=15417&mc=1

Reliability of filled vs open vias, where is the old IBM study?

Electronics Forum | Thu Jun 15 16:28:48 EDT 2017 | davef

You should be searching on RN Wild, not Roger Wild This might be a good starting point https://supplychain.gsfc.nasa.gov/docs/sc2011j.planteb.pacquetteasof1020.pdf

Looking for IPC or other standard for electronics / electro-mech

Electronics Forum | Mon May 07 16:49:59 EDT 2001 | davef

Ashok, What in earthly heaven does this question have to do with "site support"? You can�t always get what you want, but sometimes you get what you need. Some leads are: * The proposed IPC cable/wire harness document is now IPC/WHMA-A-620 and go

gold connectors

Electronics Forum | Thu May 30 14:35:00 EDT 2002 | davef

Hey Jim, What can you tell us about the causes, results, and prevention of 'fretting corrosion' in connectors? Jim, I'm not adding this to insult you, but as a source of more information for those that are not familiar with the topic. Background o

Maximum Number Crimps in Terminal

Electronics Forum | Wed Jun 05 14:24:57 EDT 2002 | davef

IPC/WHMA-A-620, Requirements and Acceptance for Cable and Wire Harness Assemblies It took the fine folk at IPC forever and a week to produce A-620. So, we continue to use NASA-STD-8739.4, Crimping, Interconnecting Cables, Harnesses, And Wiring that

Conformal coat training

Electronics Forum | Wed Nov 06 19:59:39 EST 2002 | davef

Consider checking with your CC materials supplier for suggestions. It's to their benefit to help you do a good job using their product. Regardless of your current requirements, consider basing your workmanship on NASA-STD-8739.1 Workmanship Standar

Conformal Coating Coverage

Electronics Forum | Thu Jan 30 14:37:45 EST 2003 | davef

NASA-STD-8739.1 , Workmanship Standard for Staking and Conformal Coating of Printed Wiring Boards and Electronic Assemblies, says words to the effect of : 10.1 Purpose Conformal coatings are intended to provide electrical insulation and environmental

Health Screening For Lead

Electronics Forum | Tue Apr 15 14:56:53 EDT 2003 | blnorman

I know when I worked on a NASA site, anyone in the lab was given a free physical once a year. This way they could find out what employees were normally exposed to and could track any potential illnesses. What are the costs of a lawsuit when an empl

Touch or no touch-up

Electronics Forum | Fri Feb 11 11:56:02 EST 2005 | Brian W.

Don't forget the possibility of causing component damage in addition to board damage. Reworking a ceramic capacitor with a hot iron can cause microcracks in teh capacitor. You probably won't find those until much later in the process, maybe even in

SN100C vs. SAC 305 wave soldering

Electronics Forum | Fri Jan 20 09:58:48 EST 2006 | adlsmt

We are using SAC for reflow because of the lower temp and better wetting and copper disolution is not so much an issue in reflow. There is not much difference in the alloys and they can be mixed with no problems. I assume any supplier of SN100C cou


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