// VENDOR-NEUTRAL · PUBLIC SOURCES ONLY
When a part you depend on disappears.
Independent intelligence on electronic component obsolescence and end-of-life risk. Every real cross-reference, the fit-catch on each candidate, no drop-in claims. Vendor-neutral, public sources only.
Teardowns
One obsolete part, worked out in full: lifecycle status, every cross-reference, and the requalification catch on each candidate.
Browse the catalog → 02Tools & Data
Neutral reads on the obsolescence data platforms. What each product actually shows, what it costs, where it earns its keep.
Compare the tools → 03Guides
The reference layer. The concepts every obsolescence decision rests on: DMSMS, form-fit-function, and the counterfeit standards.
Read the guides →DMSMS explained
What diminishing manufacturing sources means, what causes it, and how it differs from obsolescence.
Meaning · causes · processForm, fit, function
Whether your cross-reference is actually a valid replacement, and the checklist to prove it.
Form · fit · functionCounterfeit standards
AS5553, AS6081, AS6171: which standard to demand on an open-market buy.
AS5553 · AS6081 · AS6171Searches the teardown catalog by part number or category. No match yet means no teardown yet.
SIM808 replacement: SIM868, MC60, SIM7000G and SIM7070G compared (2026)
Cellular Modules · Issue 14 SIM808: end of life · last buy 30 Apr 2022, last delivery 31 May 2022 · no alternative named SIM868,
Four ST parts on the Sense HAT, four different answers
ST MEMS Sensors · Issue 13 LSM9DS1: OBSOLETE · the replacement ST names is 6-axis LPS25H: OBSOLETE · named part matches on pinout and
MPU-9250 and MPU-9255 replacement: obsolete 9-axis IMU cross-reference (2026)
IMU & Motion Sensors · Issue 12 MPU-9250 / 9250M / 9255: EOL, one notice (PCN-000223) ICM-20948: TDK's named alternate,
Can You Still Build the BBC micro:bit V1?
← Can You Still Build Can You Still Build This? · Issue 04 Can you still build the BBC micro:bit V1? Subject / buildBBC
We pull a classic board's public parts list and check every active part against live availability. Two numbers: how many you can still buy, and how many are still in production.
See the auditsSiliconExpert vs Z2Data vs Octopart: obsolescence data tools compared
A neutral read on Octopart, SiliconExpert, Z2Data and Accuris: what the comparison grids bury.
Neutral reads on the obsolescence data platforms: what each shows, what it costs, where it earns its keep.
Compare the tools