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Respect your ELDRS

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MikeK6ICS
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re: Respect your ELDRS
MikeK6ICS   10/6/2011 4:23:27 PM
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Hi Steve, I saw the earlier e-mail from Anthony Lai, and had your article on my hot list for today. Overall it is a good article, but you make it sound like it is a new discovery. ELDRS testing has been around for at least 30 years. The original work in the field was done by Alan Johnston of the Boeing Radiation Effects Lab, Seattle, WA. Mr. Johnston is now with the Jet Propulsion Laboratory, Pasadena, CA. ICS has been doing ELDRS testing since we started in 1986. 1. Read Mr. Johnston's publication on ELDRS testing http://opfm.jpl.nasa.gov/files/ELDRS%20Guideline%20for%20Europa_FY09_Modified%20HS%20SM_RC_rev3.pdf 2. I feel you should define ELDRS testing early in you article, not the last paragraph. 3. Most companies, such as SEMICOA, Costa Mesa, CA. et. al. conduct ELDRS testing on their products. Not just the few you mentioned. 4. Paragraph 4 you need to define "HDR" High Dose Rate. 5. A typical HDR TID (Total Integrated Dose) test will take 2-4 hours to complete. An ELDRS TID test may take weeks to months to simulate the 5-20 years the devices may see in actual space operations. Cost of an ELDRS test can be 3-10 times or more than an typical HDR TID test. Hope these comments are helpful, Mike Dr. Michael K. Gauthier, P.E. President ICS Electronics Company - IRAD Cell: 562.418.3499 TEL: 562.923.1837 Mike@iradcorp.com www.iradcorp.com

Anthony S Lai
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re: Respect your ELDRS
Anthony S Lai   10/6/2011 2:50:19 PM
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I am concerned that you only highlighted two vendors who performed ELDRS testing - Linear Technology and National Semiconductor (before they were sold) are also very active with the testing. The issue in ELDRS testing is that the test itself takes too long to run (months). An expert in this area who has done a lot of such testing for IC manufacturers is Dr. Mike Gauntheir of ICS Electronics Company.

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