High total dose gamma radiation assessment of commercially available SiGe heterojunction bipolar transistors

Marco Van Uffelen; Sam Geboers; Paul Leroux; Francis Berghmans

doi:10.1117/12.619292

30 August 2005 High total dose gamma radiation assessment of commercially available SiGe heterojunction bipolar transistors

Marco Van Uffelen, Sam Geboers, Paul Leroux, Francis Berghmans

Author Affiliations +

Proceedings Volume 5897, Photonics for Space Environments X; 58970C (2005) https://doi.org/10.1117/12.619292
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

Maintenance tasks of the future International Experimental Thermonuclear fusion Reactor (ITER) will require communication links between the remotely operated equipment in the reactor vessel and the control room, some of which need to be radiation tolerant up to MGy dose levels. As a key element of opto-electronic transceivers, we therefore assessed the DC behavior of a commercial-off-the-shelf (COTS) SiGe heterojunction bipolar transistor (HBT) under gamma radiation up to 15 MGy, with dose rates from 160 Gy/h to 27 kGy/h. Our in-situ measurements of the forward DC current gain (h_fe) present a limited loss of about 30 % for a base current of 100 μA, with a dependence on the biasing conditions and a thermally activated recovery. These first ever reported results up to MGy levels allow us to design circuit-hardened driving electronics for both photonic transmitters and receivers, enabling high bandwidth communications applied in a fusion reactor environment.

Citation Download Citation

Marco Van Uffelen, Sam Geboers, Paul Leroux, and Francis Berghmans "High total dose gamma radiation assessment of commercially available SiGe heterojunction bipolar transistors", Proc. SPIE 5897, Photonics for Space Environments X, 58970C (30 August 2005); https://doi.org/10.1117/12.619292

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available