NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
ELDRS Characterization for a Very High Dose MissionEvaluation of bipolar linear parts which may have Enhanced Low Dose Rate Sensitivity (ELDRS) is problematic for missions that have very high dose radiation requirements. The accepted standards for evaluating parts that display ELDRS require testing at a very low dose rate which could be prohibitively long for very high dose missions. In this work, a methodology for ELDRS characterization of bipolar parts for mission doses up to 1 Mrad(Si) is evaluated. The procedure employs an initial dose rate of 0.01 rad(Si)/s to a total dose of 50 krad(Si) and then changes to 0.04 rad(Si)/s to a total dose of 1 Mrad(Si). This procedure appears to work well. No change in rate of degradation with dose has been observed when the dose rate is changed from 0.01 to 0.04 rad(Si)/s. This is taken as an indication that the degradation due to the higher dose rate is equivalent to that at the lower dose rate at the higher dose levels, at least for the parts studied to date. In several cases, significant parameter degradation or functional failure not observed at HDR was observed at fairly high total doses (50 to 250 krad(Si)) at LDR. This behavior calls into question the use of dose rate trend data and enhancement factors to predict LDR performance.
Document ID
20150008531
Acquisition Source
Jet Propulsion Laboratory
Document Type
Conference Paper
External Source(s)
Authors
Harris, Richard D.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
McClure, Steven S.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Rax, Bernard G.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Kenna, Aaron J.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Thorbourn, Dennis O.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Clark, Karla B.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Yan, Tsun-Yee
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
May 20, 2015
Publication Date
July 20, 2010
Subject Category
Space Radiation
Meeting Information
Meeting: IEEE Nuclear and Plasma Sciences Society
Location: Denver, CO
Country: United States
Start Date: July 19, 2010
End Date: July 23, 2010
Sponsors: Institute of Electrical and Electronics Engineers
Distribution Limits
Public
Copyright
Other
Keywords
Radiation Damage
TID
Bipolar

Available Downloads

There are no available downloads for this record.
No Preview Available