C&K Switches EOL & Migration Reference v2 — Appendix Mega-Grids (PDN25-26, PDN25-28, PDN26-5 Rev. B)

Discontinuation taken from C&K's own Product Discontinuation Notifications (PDNs) — the three C&K-authored notices whose appendix part lists are flat multi-column grids: PDN25-26 (630 records — 597 part numbers in the appendix grid headed "Toggle" plus 33 in the appendix tail under the "Rocker" and "Slide" headings), PDN25-28 (632 records — the remaining 3000 Series Thumbwheel material numbers) and PDN26-5 Rev. B (772 records — SS & SK series slide-switch and PS series pushbutton-switch material numbers, each with its printed description; 773 rows are printed and one material, HASK0263, is printed twice and counted once). All three notices were opened in full at the C&K EOL & Migration Dataset v1 build (260 records across 7 other notices) but held uncounted there, because their appendix text layers interleave the printed columns and no defensible per-row count could be derived from the text layer alone. This v2 file is that held set, shipped whole.

Time-critical, stated plainly: no last-time-buy window in this dataset is still open — the latest, PDN26-5 Rev. B's, closed 8 May 2026 (last delivery 7 August 2026). 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 part / material number as the notice prints it (630 + 632 + 772 = 2,034). Extraction was by printed column coordinates (PyMuPDF word positions clustered into each appendix's printed columns), cross-validated against an independent pdftotext -layout extraction: identical token multisets for PDN25-26 and PDN25-28, and identical material multisets for PDN26-5 apart from the single disclosed duplicate printing of HASK0263. No part in this file appears in the C&K v1 dataset, and the three notices share no parts with each other — all overlaps checked programmatically at build: zero.

Honesty notes: no record carries a per-part printed replacement — all three notices print "No direct replacement" / "No replacement" for the entire list. In PDN25-26's appendix tail the Rocker and Slide lists print side by side and interleave, so the per-token Rocker/Slide assignment is not asserted (the same treatment C&K v1 gives PDN25-23's interleaved columns). PDN25-28's own claim that its list excludes PDN21-10's parts was verified, not trusted: zero overlap. One PDN26-5 addendum row is anomalous as printed: PCM0006's description ("SWITCH PCM12SMTR -COM-") prints on the line above its material code — recorded as printed.

Verification standard: C&K-authored notices only — the 3 notices above, each opened in full as a DigiKey media-server mirror of the identical C&K PDF (C&K hosts no public notice library on its own site; the OEM-authorship basis is stated in full in the paid file). 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.

Free sample — 8 of 2,034 records

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 dataset — paid

Full file: all 2,034 discontinuation records from C&K's 3 appendix mega-grid notices above, plus buyer notes and honesty notes. Clean Markdown, compiled 2026-10-22.

Price: 0.01 USDC · Protocol: HTTP 402 (x402, Base) · GET /data/ck-eol-migration-v2.md → 402 → pay → 200

Get the full C&K Switches EOL & Migration Dataset v2 (0.01 USDC)

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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.