Discontinuation taken from Littelfuse's own notices — the two Littelfuse-authored notices held back as v2 slices when the Littelfuse EOL & Migration Dataset v1 (424 records across 10 other notices) was built. PCN C0557 (481 records — Littelfuse Commercial Vehicle Products' "Low sales obsolescence" mega-notice of 28 February 2025: trailer connectors, low/high-current switches, relays, DC contactors and power-distribution parts; 415 rows carried a last time buy to 11 April 2025 and 66 rows were obsolete immediately) and LFPDN250331-01 (30 records — IXYS UK Westcode Ltd.'s termination of its symmetrical GTO thyristor range, 1 April 2025, immediate effect, no alternatives offered).
Time-critical, stated plainly: no last-time-buy window in this dataset is still open — C0557's closed 11 April 2025, and its remaining rows plus all 30 GTO thyristors were obsolete with immediate effect. The file's value is the verified record of what is discontinued, under which notice, with Littelfuse's own alternatives where it printed them.
Cross-notice warning: many of C0557's printed alternatives are DCNLEV / DCNEV / DCNSEV contactors that PCN C0586 itself obsoleted three months later (see the Littelfuse v1 dataset, whose alternatives are DCNHE / DCNHF). Six DCNEV250 variants are in fact discontinued by both notices, each reproduced as printed. Check a C0557 alternative against the C0586 file before treating it as current.
Counting basis, stated plainly: one record per affected-parts row as the notice prints it (481 + 30 = 511). C0557 was extracted by printed column coordinates (PyMuPDF word positions) from its TTI printing and cross-validated against Farnell's three-column rendering of the same notice: identical 481 part numbers in identical order, with the alternative pairing agreeing apart from three disclosed rows where the Farnell conversion drops the first of two printed alternatives (the TTI cell governs). The earlier research tally of ≈483 for C0557 is superseded by this recount.
Honesty notes: 110 C0557 records name a specific alternative part and 3 print a family/series-level alternative (e.g. 0FHZ0001Z → ZCASE-FHZ FAMILY); the other 368 print a littelfuse.com selection-tools URL instead of a part and are recorded as None named, exactly as the notice's own "No alternative idenfied" [sic] note states. In the TTI printing's text layer, 12 part numbers carry a leading marker glyph — the Farnell rendering prints all 12 bare (verified in its text layer and visually), so the records ship without it; an earlier research draft's reading of that glyph as a "P" prefix was wrong and is corrected in the paid file. C0557's customer-material annex (one distributor's materials, with account-owner names) is not part of the affected-parts table and is not shipped. LFPDN250331-01's annex values are reproduced in printed order — for the G/Q-series rows the second value cannot be a VRRM in volts, so its column assignment is not asserted.
Verification standard: Littelfuse-authored notices only — both opened in full as distributor-hosted mirrors of the identical Littelfuse PDFs (TTI for both, Farnell as the corroborating rendering of C0557; Littelfuse hosts no public notice library on its own site — the OEM-authorship basis is stated in full in the paid file).
| Notice | Part to be Discontinued | Replacement Part | Last Time Buy | Last Ship |
|---|---|---|---|---|
| PCN C0557 | 00423790 | 00431700 | 2025-04-11 | Not printed |
| PCN C0557 | 00421700 | None named | 2025-04-11 | Not printed |
| PCN C0557 | 880175S | 880175 | 2025-04-11 | Not printed |
| PCN C0557 | 2484-16-BP | 2484-16 2484-05 | 2025-04-11 | Not printed |
| PCN C0557 | 58027-07 | 56027-07 | 2025-04-11 | Not printed |
| LFPDN250331-01 | G1000NC45B | None named | Not offered (immediate effect) | Not printed |
| LFPDN250331-01 | H0500KC200 | None named | Not offered (immediate effect) | Not printed |
| LFPDN250331-01 | S0300SR12Y | None named | Not offered (immediate effect) | Not printed |
Sample rows are copied verbatim from the paid dataset file (the paid file also carries the product line / detail, the issue date and a source URL per record, grouped by notice).
Full file: all 511 discontinuation records from the 2 Littelfuse 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/littelfuse-eol-migration-v2.md → 402 → pay → 200
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Facts compiled from Littelfuse's published Product Change / Discontinuance Notices (including its IXYS UK Westcode subsidiary); not affiliated with or endorsed by Littelfuse, Inc. 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.