Manufacturers discontinue components every week. The notice you miss is the one that stops your line. BOM Sentry watches every manufacturer change notice and tells you the day one of them lands on your bill of materials.
Free forever, no credit card, one-click unsubscribe. Or see paid monitoring from $39/mo.
2 parts on your BOM were just discontinued
Confirm the affected variant against the original notice before committing to a buy or a redesign.
Example of the alert format. Real alerts always link the manufacturer's notice.
The problem
When a manufacturer issues a discontinuance notice you typically get a 6–12 month last-time-buy window. Miss it and you are not buying a part any more — you are funding a redesign.
Those notices are published across dozens of separate manufacturer portals, in inconsistent formats, every single week. The tools built to solve this — SiliconExpert, Accuris, Z2Data — are enterprise contracts with quote-only pricing and a sales call before you learn the number. If you are a ten-person hardware team, nobody is selling to you.
That is the entire reason this exists.
What you get
No dashboard to log into and forget about. It arrives in your inbox, which is where you already are.
The moment a part on your BOM is hit, you hear about it — with the last-time-buy date and a link to the notice.
LM358NEOLTPS54331DRLTBATMEGA328P-AUACTIVEEverything discontinued or changed across every manufacturer we track, grouped by severity so you can scan it in a minute.
3712Every line on your BOM, with lifecycle status, a last-time-buy calendar, and what needs attention first.
How it works
Every tracked manufacturer's change-notice feed, checked on a schedule and parsed into structured records — part numbers, dates, and severity.
CSV or pasted part numbers. Messy formatting is fine: matching normalises case,
hyphens, and packaging suffixes like /NOPB
and -TR.
An alert the day one of your parts is hit. Not a firehose — just your exposure, with the date that matters and the source to verify it.
Coverage
Coverage starts with the highest-volume sources and expands. We publish this list and keep it current — if a source degrades, we say so in that week's digest rather than quietly dropping it.
Pricing
No sales call, no annual contract, no quote form.
For staying broadly aware
For a team shipping real hardware
For multiple products and people
One email a week: everything discontinued, changed, or heading for last-time-buy across the manufacturers we track. Upgrade whenever you want your own BOM watched — we check it against every notice already on record, not just future ones, so most people find live exposure on day one.
No credit card. We never sell or share your address. Unsubscribe in one click.
Straight answers
You are going to make purchasing decisions worth real money off these emails, so here are the limits in plain language.
Questions
Change notices published by the manufacturers themselves. A PCN exists specifically to be broadcast to the market. We summarise them and link to the original document — we do not republish manufacturer PDFs wholesale, and we do not redistribute any licensed dataset.
Every alert links the source notice so you can verify at source, and we never state a fact we did not extract from a published document. Where a match is on a part family rather than an exact part number, we label it as such so you know what you are looking at. We would rather flag something uncertain and tell you it is uncertain than stay silent.
Matching normalises case, hyphens, and the common packaging suffixes — /NOPB, -TR, /REEL and friends. We deliberately bias toward catching too much rather than too little: a false positive costs you thirty seconds, a missed notice costs you a respin.
You upload a part list and we immediately check it against every notice already on record — not just future ones. Most new subscribers find existing exposure on day one.
Yes, on the Team plan via webhook.
A small independent operation, not a venture-funded platform. That is the point: the incumbents in this space have to charge five figures because they carry enterprise sales teams. We do not, so we can serve teams they will not quote.