[clug] Effect of operating temps on life of integrated circuits

[steve jenkin]

steve jenkin wrote on 23/01/10 6:32 PM:
> I've been trying to track down any estimates/rules-of-thumb about
> the effect of increased junction temperature on expected lifetime of
> IC's like CPU's and RAM - and was hoping the Collective Wisdom of
> CLUG (and some better Google-Fu than mine) could come up with
> quotable figures.


An answer to the source of the "internal 10°C increase halves life"
not-quite-a-myth:

<http://electronics-cooling.com/articles/2000/2000_jan_a3.php>

> Stupid Thing No. 9.  Reducing temperature because "every 10°C drop
> doubles the life." This is still the gospel of the land. It started
> with the U.S. Department of Defense Military Handbook 217, which
> became the standard for electronics reliability. The 10°C rule was
> part of it.

Wikipedia:
<http://en.wikipedia.org/wiki/MIL-STD-883>

Article (2007?) on need for an update of MIL-HDBK-217 & "VITA 51".
<http://www.vmecritical.com/articles/id/?3164>

Intro to "MIL-HDBK-217 Reliability Prediction"
<http://www.reliabilityeducation.com/intro_mil217.html>

MIL-HDBK-217F - download. 322pp, 19Mb. dated "2-Dec-1991". OCR'd doc.
<http://www.quanterion.com/Publications/MIL-HDBK-217/index.asp>

Microcircuits [incl. RAM, Microprocessors] p 5-1. (pp120 in PDF)
p152 in PDF has a table of temperature factors. Includes VHSIC CMOS.
Worked Examples 5-20 (p159 in PDF)
Appendix B (p311 of PDF) and Reference 30 (p319 of PDF) are cited for
more detail on VLSI CMOS.

-- 
Steve Jenkin, Info Tech, Systems and Design Specialist.
0412 786 915 (+61 412 786 915)
PO Box 48, Kippax ACT 2615, AUSTRALIA

sjenkin at canb.auug.org.au http://members.tip.net.au/~sjenkin