SRC Forum - Message Replies
Forum: Reliability & Maintainability Questions and Answers
Topic: Reliability & Maintainability Questions and Answers
Topic Posted by: Reliability & Maintainability Forum
Organization: System Reliability Center
Date Posted: Mon Aug 31 12:47:36 US/Eastern 1998
Posted by: Raul Rusu
Date posted: Tue Dec 9 14:58:27 US/Eastern 2003
Subject: trnaszorb failure modes
Is there any available data on open type failure modes for the transient voltage suppressors (e.g. SMBJ33A)? FMD-97 lists only shorted, failed BVR and loose particle. Also, one manufacturer rep indicated that shorted and degraded types are the most common, with no info on other types of failures. Thanks!
Reply Posted by: Satish Subramanian
Organization: Proton Energy Systems
Date Posted: Thu Dec 18 10:10:13 US/Eastern 2003
There is a good article on Failure Modes and Fusing of TVS Devices by David W.Hutchins. That should answer your question. It is also a good design practice check based on stress/derating if the conditions the device is subjected to is within designed limits.