Discontinuation taken from C&K's own Product Discontinuation Notifications (PDNs) — C&K-authored PDFs opened in full as distributor mirrors (Mouser, DigiKey, TTI Europe and third-party PDF mirrors of the identical C&K documents). Every record is one entry of a notice's affected-part list, across 7 notices: PDN21-10 (135 records — 3 Series Thumbwheel orderables), PDN# 21-14 rev A (46 records — PTS tactile switch orderables), PDN25-23 (37 records — ET27 series rocker / toggle material numbers; series-level alternatives ET07 / ET28 printed), PDN 20-05 (34 records — CCM01MK2 & CCM01MK2 V2 smart-card connector orderables), PDN-22-11 rev A (5 records — PS series pushbutton item numbers; replacement printed as "No replacement"), PDN-22-13 rev A (2 records — the printed example P/Ns of the ZMA G01 gold-plating family-rule discontinuation) and PDN 22-04 (1 record — DS Detect series item HADS0009, printed twice in the notice, counted once).
Time-critical, stated plainly: no last-time-buy window in this dataset is still open — the latest, PDN25-23's, closed 16 January 2026 (last delivery 31 March 2026). PDN-22-13 took effect immediately on issue with no last-time-buy at all. The file's value is the verified record of what is discontinued, under which notice, with C&K's own dates.
Counting basis, stated plainly: one record per affected orderable part number as the notice prints it (135 + 46 + 37 + 34 + 5 + 2 + 1 = 260). PDN-22-13's true scope is the whole ZMAG01 build-code family by rule — only its two printed example P/Ns are records; no combinations were enumerated. Three further C&K notices opened in full (PDN25-26, PDN25-28, PDN26-5 Rev. B) are not in this file: their appendix part lists are flat multi-column token streams whose text layer interleaves columns, so no defensible per-row count exists yet — they are held as v2 extraction leads, not padded into v1.
Honesty notes: no record carries a per-part printed replacement — C&K's notices here name at most series-level alternatives, recorded in the file's Series / Detail column and never paired to a single part. PDN25-23's rocker/toggle column assignment per row is not asserted (its two-column layout interleaves in the text layer). Two PDN21-10 part numbers are normalised from spaced text-layer renderings, flagged in the file.
Verification standard: C&K-authored notices only — the 7 notices above, each opened in full. C&K is a Littelfuse-owned brand (acquisition completed July 2022), but every notice here is C&K-branded with no Littelfuse letterhead, so C&K stands as its own dataset and these records are not in the Littelfuse file.
| Notice | Part to be Discontinued | Replacement Part | Last Time Buy | Last Ship |
|---|---|---|---|---|
| PDN21-10 | 301109100 | None named | 2021-10-01 | 2021-12-31 |
| PDN21-10 | 301119100 | None named | 2021-10-01 | 2021-12-31 |
| PDN# 21-14 rev A | Y96A112M0FP | None named | 2021-11-30 | 2022-05-30 |
| PDN25-23 | ET27SD1CQE | None named | 2026-01-16 | 2026-03-31 |
| PDN 20-05 | T1112-2013CPLFT | None named | 2020-09-18 | 2021-03-18 |
| PDN-22-11 rev A | HAPS0067 | None named | 2022-10-26 | 2023-04-26 |
Sample rows are copied verbatim from the paid dataset file (the paid file also carries the series / detail, the issue date and a source URL per record, grouped by notice).
Full file: all 260 discontinuance records from C&K's 7 notices above, plus buyer notes and honesty notes. Clean Markdown, compiled 2026-10-22.
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Facts compiled from C&K's published Product Discontinuation Notifications; not affiliated with or endorsed by C&K Switches or Littelfuse. Trademarks belong to their owners. Verify the current status of any specific part against the original notice before committing a design or a purchase order.