NDLI: High power EBS diode studies

Content Provider	IEEE Xplore Digital Library
Author	Harris, F.H. Pankey Jr., T. Thomas, R.E. Haas, G.A.
Copyright Year	1973
Description	Author affiliation: Naval Research Lab., Washington, D. C. (Harris, F.H.)
Abstract	Recent studies of large area EBS diodes for use in a 1 kW 500 MHz CW application are given. Power dissipation of 55 watts CW on a 4 $mm^{2}diode$ has been obtained in excess of 1000 hours with no degradation in reverse voltage characteristics. At higher diode dissipation, current runaway was observed, and this was shown to be a function of the power dissipated in the diode, independent of diode voltage and current over a 100% change in diode voltage and current. The maximum diode dissipation has been related to voids in the braze to the heat sink. Diodes with void-free bonds have shown dissipation levels in excess of 100 watts CW but were limited by degassing problems in the tube. Failure with some void-free bonded EBS diodes was related to breakdown of small (\sim 3-10µm) high conductive regions of the diodes observed with a Scanning Electron Microscope. Auger surface analysis has traced this to a possible residual phosphorus contamination on the top p layer due to removal of excess Al metallization during fabrication.
Starting Page	509
Ending Page	511
File Size	570519
Page Count	3
File Format	PDF
DOI	10.1109/IEDM.1973.188771
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1973-12-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Diodes Voltage Power dissipation Degradation Heat sinks Bonding Electric breakdown Scanning electron microscopy Surface contamination Metallization
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in