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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: Lyle Beck ( )
Organization:NADEP JAX
Date posted: Wed Dec 13 10:39:21 US/Eastern 2000
Subject: UA709 Op Amp instability
I am looking for some documentaion related to the USAF's listing of the UA709 Op Amp as being substantially unstable thus unuseable in avionics applications. An email regarding this would be extremely helpful in saving the taxpayers some dollars (we have to pay for this extended election somehow!) LTBeck


Subject: OP Amp Design
Reply Posted by: Bruce Dudley ( )
Organization: Reliability Analysis Center
Date Posted: Mon Dec 18 14:46:28 US/Eastern 2000
We searched the GIDEP data base for this part,UA709,type (op amp) and could not find any warnings or design restrictions. This is an old part that has been successfully used in many applications. IC masters indicates that there are three device types UA709C, UA709M and UA709AM. The M and the Am are military temperature range, so perhaps the Air Force concern is the use of the commercial device with limited temperature range. Another consideration is the design application may have been incorrect or that there is a new problem with recent lots that has not been detailed in the GIDEP alerts. As far as we know there are no limitations on this "old" part other than the design limitations as prescribed by the manufacturer's specification data sheet.

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