Guides
The reference layer under every teardown. Where a teardown answers "what do I replace this specific part with," a guide answers "what concept do I need to understand to decide well." Evergreen, sourced from public data, kept current.
Latest guide
Reference
Lifecycle Status Codes
What NRND, EOL, Active and Last Time Buy actually mean at each vendor, quoted from their own definitions, and why the same word carries different consequences.
What is a guide?
Concepts, not products.
Guides explain the ideas obsolescence decisions rest on. Tools & Data reviews the platforms you buy. Two different questions.
See Tools & DataAll guides
Form, Fit, Function
Form, fit and function is a property of your system, not the part. What a cross-reference checks, what it omits, and the checklist to validate a replacement.
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DMSMS Explained
What diminishing manufacturing sources and material shortages means, what causes it, how it differs from obsolescence, and the management process.
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Counterfeit Standards
AS5553, AS6081, AS6171 and AS6174: a vendor-neutral map of which counterfeit-parts standard to demand from your supplier on an open-market buy.
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Obsolescence Management Plan
The obsolescence management plan, section by section: what a credible plan contains and how to run it.
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Lifecycle Status Codes
What NRND, EOL, Active and Last Time Buy actually mean at each vendor, quoted from their own definitions, and why the same word carries different consequences.
Read →