Forum: Reliability & Maintainability Questions and Answers
Topic: Reliability & Maintainability Questions and AnswersTopic Posted by: Reliability & Maintainability Forum (email@example.com )
Organization: System Reliability Center
Date Posted: Mon Aug 31 12:47:36 US/Eastern 1998
Original Message:Posted by: Charles Workman
Date posted: Thu Mar 21 8:47:38 US/Eastern 2002
Subject: failure mode/mech of tantalum capacitors
We are experiencing failures of tantalum capacitors, they exhibit a resistive (~17K ohm) slope on a curve tracer after approx. 1-2 hours of bias. This failure mode will recover in a few hours and they operate normally, this phenomenon is repeatable. Also, they have recieved a bias burn in prior to use which is unable to screen this problem. Any ideas as to what is causing this?