C&K 3 Series Thumbwheel orderables (PDN21-10), PTS tactile switch orderables (PDN# 21-14 rev A), ET27 series rocker/toggle material numbers (PDN25-23; series-level alternatives ET07 single-pole / ET28 double-pole printed, not per-part), CCM01MK2 & CCM01MK2 V2 smart-card connector orderables (PDN 20-05), PS series pushbutton item numbers (PDN-22-11 rev A; replacement printed "No replacement"), the two printed example P/Ns of the ZMA G01 gold-plating family-rule discontinuation (PDN-22-13 rev A; family-level ZMAG03 printed), and DS Detect series item HADS0009 (PDN 22-04; printed twice in the notice, counted once).
| Section | Records |
|---|---|
| PDN21-10 — 3 Series Thumbwheel switches (135 records) | 135 |
| PDN# 21-14 rev A — PTS tactile switches (46 records) | 46 |
| PDN25-23 — ET27 series rocker / toggle switches (37 records) | 37 |
| PDN 20-05 — CCM01MK2 & CCM01MK2 V2 smart-card connectors (34 records) | 34 |
| PDN-22-11 rev A — PS series pushbutton switches, partial part numbers (5 records) | 5 |
| PDN-22-13 rev A — ZMA series G01 (gold plating) electrical rating discontinuation (2 records — printed examples of a family-rule discontinuation) | 2 |
| PDN 22-04 — DS (Detect) series, partial part numbers (1 record) | 1 |
| Notice | Part to be Discontinued | Replacement Part | Series / Detail | Issue Date | Last Time Buy |
|---|---|---|---|---|---|
| PDN21-10 | 301109100 | None named | 3 Series Thumbwheel switches | 2021-04-01 | 2021-10-01 |
| PDN21-10 | 301119100 | None named | 3 Series Thumbwheel switches | 2021-04-01 | 2021-10-01 |
| PDN21-10 | 301409100 | None named | 3 Series Thumbwheel switches | 2021-04-01 | 2021-10-01 |
| PDN21-10 | 301409103 | None named | 3 Series Thumbwheel switches | 2021-04-01 | 2021-10-01 |
| PDN21-10 | 302109002 | None named | 3 Series Thumbwheel switches | 2021-04-01 | 2021-10-01 |
| PDN21-10 | 302109003 | None named | 3 Series Thumbwheel switches | 2021-04-01 | 2021-10-01 |
| PDN21-10 | 302109102 | None named | 3 Series Thumbwheel switches | 2021-04-01 | 2021-10-01 |
| PDN21-10 | 302109103 | None named | 3 Series Thumbwheel switches | 2021-04-01 | 2021-10-01 |
Sample rows are copied verbatim from the paid dataset file.
All 260 records are in the C&K Switches — EOL & Migration Dataset v1 file.
Price: 0.01 USDC · Protocol: HTTP 402 (x402, Base) · GET /data/ck-eol-migration-v1.md → 402 → pay → 200
Get the full dataset (0.01 USDC) · All C&K Switches datasets
How do I check whether a specific C&K Switches part is in this dataset?
Open the free sample records on the dataset page first — they are copied verbatim from the paid file. The full file lists every record with its source notice, so you can confirm coverage of your exact part number before relying on the cross-reference.
What does last time buy (LTB) mean?
The last date the manufacturer accepts orders for a discontinued part. After it passes, the part is only available from remaining distributor stock or the secondary market — which is exactly when a verified replacement cross-reference matters most.
Are the recommended replacements drop-in compatible?
Not necessarily. Manufacturers' own notices sometimes warn that a recommended replacement is not pin or voltage compatible and requires a board redesign. Where the source notice prints such a warning, it is carried in the dataset — always check the replacement's package and key specs against your design.
Where does this data come from?
Every record is extracted from a C&K Switches document — the manufacturer's own lifecycle, discontinuation, PCN/PDN notices and the affected-part lists they publish — downloaded from the manufacturer's own channels. No part number, date or replacement is inferred; if the manufacturer did not print it, it is not in the file.
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