Hi, I'm looking to find some information on the shelf life of components after they have been soldered/installed onto PCB's. Our customer is requesting this info since they plan to only be using only a fraction of our product at time, with the rest in storage.
We're using the following parts:
If anyone knows the data (or where to look) for these parts, I'd be most appreciative.
The reliability of components installed on a circuit board and then placed into inventory is often referred to as “long term dormant storage”. As you might imagine this is a critical concern with defense applications especially munitions that are stored for twenty years and absolutely must work properly when fired.
There are a number of factors affecting this and most are specific to the quality of circuit board assembly process such as the solder and flux used, solder profiles, cleaning processes, and the use and type of conformal coating as well as storage conditions. Volumes of texts have been written on this and related topics. The University of Maryland Center For Advanced Life Cycle Engineering (CALCE) has published a number of papers and offers courses on this topic. www.calce.umd.edu
At the device level, TI has performed shelf life studies of product properly packed as delivered from TI. I invite you to review the following papers:
Component Reliability After Long Term Storage - http://www.ti.com/lit/slva304
BGA Package Component Reliability After Long-Term Storage - http://www.ti.com/lit/slva333
I would be happy to discuss this with you further.
Regards,S. Richard BiddleReliability Engineering ManagerMedical, HiRel, Defense & Aerospacesfirstname.lastname@example.org
Thank you Richard!
That's just what I'm looking for.
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