JST Corporation (Waukegan, IL) obsolescence letters mirrored by the dac-group notification service (2014-06-09 ICM-MA2A-C454N / FN1.25-4; 2015-03-25 UB-MC5ABR3-SD204-4S-TB NMP with its printed replacement UB-MC5ABR3-SD204-4S-1-TB NMP, AllElco mirror; the 2019-11-08 FJ / 1.25FJ / JSBY / JSEY / KSEY table of 20 parts with JST internal codes and factory codes, orders accepted until 2020-04-17 and no replacement; 2020-04-21 five parts incl. JBS / JHEY / CPTK / VRC; 2020-07-28 REV.2 R22-8(N) and R22-8(NJ), both with the printed replacement (W)22-8), J.S.T. (U.K.) Ltd. notices hosted as Farnell datasheet PDFs (PDN 2019-04-26 02T-WPJV-2-RM, replacement printed N/A; EOL notification 2020-01-27 LC-04B and GS2.5-0.5, replacement printed None, LTB 2019-11-28), and J.S.T. Mfg. Co., Ltd. REPORT G26-02507 Rev. 1 mirrored by PK Components (130 through-hole parts in the CS, CSW, FE, FMK, FMZ, JE, JED, MJ and SZ series from its numbered appendix, in appendix order; discontinuation due to the discontinuation of the water-repellent agent, scheduled for the end of 2027; "As a general rule, no PCB-compatible alternative products are available" as printed).
| Section | Records |
|---|---|
| JST US letter 2014-06-09 — Obsolescence of JST Products (2 records) | 2 |
| JST US letter 2015-03-25 — Obsolescence of JST Products (1 record) | 1 |
| JST US letter 2019-11-08 — FJ / JSBY / JSEY / KSEY series (20 records) | 20 |
| JST US letter 2020-04-21 — Obsolescence of JST Products (5 records) | 5 |
| JST US letter 2020-07-28 REV.2 — R22-8(N) & R22-8(NJ) (2 records) | 2 |
| JST (UK) Product Discontinuance Notification 2019-04-26 (1 record) | 1 |
| JST (UK) End of Life Notification 2020-01-27 (2 records) | 2 |
| G26-02507 Rev. 1 — Discontinuation of Through-Hole Type Connectors (130 records) | 130 |
| Notice | Part to be Discontinued | Replacement Part | Series / Detail | Issue Date | Last Time Buy |
|---|---|---|---|---|---|
| JST US letter 2014-06-09 | ICM-MA2A-C454N | None named | Obsolescence per JST US letter 2014-06-09 — "JST factory in Japan has discontinued the production"; no replacement printed | 2014-06-09 | Not printed |
| JST US letter 2014-06-09 | FN1.25-4 | None named | Obsolescence per JST US letter 2014-06-09 — "JST factory in Japan has discontinued the production"; no replacement printed | 2014-06-09 | Not printed |
| JST US letter 2015-03-25 | UB-MC5ABR3-SD204-4S-TB NMP | UB-MC5ABR3-SD204-4S-1-TB NMP | Obsolescence per JST US letter 2015-03-25 — replacement printed: "the replacement part number for the above product is UB-MC5ABR3-SD204-4S-1-TB NMP" | 2015-03-25 | Not printed |
| JST US letter 2019-11-08 | (W)06P-FJ | None named | FJ / JSBY / JSEY / KSEY series obsolescence — JST internal code 67217300; Series FJ, factory JIN; covering email: "there will be no replacement once they become obsolete" | 2019-11-08 | 2020-04-17 (orders accepted until, as printed in the covering email) |
| JST US letter 2019-11-08 | (W)09P-FJ | None named | FJ / JSBY / JSEY / KSEY series obsolescence — JST internal code 67217900; Series FJ, factory JIN; covering email: "there will be no replacement once they become obsolete" | 2019-11-08 | 2020-04-17 (orders accepted until, as printed in the covering email) |
| JST US letter 2019-11-08 | (W)04R-FJ (LF)(SN) | None named | FJ / JSBY / JSEY / KSEY series obsolescence — JST internal code 67207000; Series FJ (letter mark *), factory JIN; covering email: "there will be no replacement once they become obsolete" | 2019-11-08 | 2020-04-17 (orders accepted until, as printed in the covering email) |
| JST US letter 2019-11-08 | (W)06R-FJ (LF)(SN) | None named | FJ / JSBY / JSEY / KSEY series obsolescence — JST internal code 67207600; Series FJ (letter mark *), factory JIN; covering email: "there will be no replacement once they become obsolete" | 2019-11-08 | 2020-04-17 (orders accepted until, as printed in the covering email) |
| JST US letter 2019-11-08 | (W)08R-FJ (LF)(SN) | None named | FJ / JSBY / JSEY / KSEY series obsolescence — JST internal code 67208200; Series FJ (letter mark *), factory JIN; covering email: "there will be no replacement once they become obsolete" | 2019-11-08 | 2020-04-17 (orders accepted until, as printed in the covering email) |
Sample rows are copied verbatim from the paid dataset file.
All 163 records are in the JST — EOL & Migration Dataset v1 file.
Price: 0.01 USDC · Protocol: HTTP 402 (x402, Base) · GET /data/jst-eol-migration-v1.md → 402 → pay → 200
Get the full dataset (0.01 USDC) · All JST datasets
How do I check whether a specific JST 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 JST 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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