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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

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Posted by: Kang
Date posted: Fri Sep 15 14:52:13 US/Eastern 2000
Subject: Quality Factor in 217
Is there any guideline or standard about how to upgrade or identify the plastic components to higher level in MIL-HDBK-217? For example, , how to identify the plastic transistor as JANTX quality level? Any qualification testing procedure, or screening procedure? Thanks in advance! Kang


Subject: Transistor Quality Factors
Reply Posted by: Bruce Dudley ( )
Organization: Reliability Analysis Center
Date Posted: Tue Sep 19 14:06:42 US/Eastern 2000
MIL-PRF-19500M describes tests that one needs to perform if higher levels of screening are required. Some of the test that the standard recommends include: temperature cycling thermal impedance,hi temperature reverse bias,burn-in,and electrical performance. This specification can be seen on the web at and looking for the applicable specification number. The tests preferences are described in appendix E of the report.

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