Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

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SMT electronics assembly manufacturing forum.

TO99 age and reliability

Travis Slaughter


TO99 age and reliability | 24 January, 2001

I�m suddenly getting a very high failure rate in a TO99 component (National LM136AH-2.5). After some investigation we found some of these parts are more than 20 years old. What I am hoping for is that someone out there can help me find some standards on how old different packages can be before they need to be thrown out.

Thank you, Travis

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TO99 age and reliability | 25 January, 2001

Interesting. I'd start with the "Help Desk" at the Reliability Analysis Center [].

Please get back with your findings.

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