Bourns — Electronic Component EOL & Migration Dataset v1 — the guide

Riedon(TM) thick film power, metal foil power and high-power wirewound resistors (NHR/NPR/PF/KHR/UAL/USR and related orderables -> PWR220T/PWR221T Bourns replacements where named), Riedon shunts, fuses and fuseblocks (MKA/MKB/MKC/SWA/SWB/SWE/WB/WO2 orderables -> RSA/RSB/RSC/RSJ/RSI/RSK/RSN/RSH replacements where named; CNL/CNN/JLLN/NFB/RCS fuse and holder parts with no replacement), Bourns custom magnetics (TMS/TMA/BA/BS/TMP/TMW orderables), and Trimpot custom products (7914/3314/70AA custom orderables).

Time-critical records

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What is in the file, section by section

SectionRecords
N2552REV — Riedon™ thick film power, metal foil power, and high-power wirewound resistors, with replacements (167 records)167
N2552REV — Riedon™ power resistors, obsolete with no replacement named (544 records)544
N2553REV — Riedon™ shunts, fuses, and fuseblocks, with replacements (352 records)352
N2553REV — Riedon™ shunts, fuses, and fuseblocks, obsolete with no replacement named (65 records)65
IC219954REV — Custom magnetics products (96 records)96
T2510 — Trimpot® custom products (10 records)10
IC24014 — Magnetics products (255 records)255
ESD2424 — SMF4L & SMF4L-Q TVS diodes (5 records)5
SC2416 — EN Series rotary optical encoders (3 records)3
FU2403 — TCS-DL004-750-WH TCS dual transient current suppressor (1 record)1

Free sample — 8 of 1,498 records, verbatim

NoticePart to be DiscontinuedReplacement PartSeries / DetailIssue DateLast Time Buy
N2552REVNHR2D-0R5F1PWR221T-50-R500FRiedon Power Resistor (Thick Film / Metal Foil / Wirewound)2025-09-152026-02-27
N2552REVNPR2D-7R5F1PWR221T-30-7R00FRiedon Power Resistor (Thick Film / Metal Foil / Wirewound)2025-09-152026-02-27
N2552REVNHR2D-100RJ1PWR221T-50-1000FRiedon Power Resistor (Thick Film / Metal Foil / Wirewound)2025-09-152026-02-27
N2552REVPF2202-0R04J1PWR220T-20-0R04JRiedon Power Resistor (Thick Film / Metal Foil / Wirewound)2025-09-152026-02-27
N2552REVNHR2D-10KJ1PWR221T-50-1002FRiedon Power Resistor (Thick Film / Metal Foil / Wirewound)2025-09-152026-02-27
N2552REVPF2202-0R15F1PWR220T-20-0R15FRiedon Power Resistor (Thick Film / Metal Foil / Wirewound)2025-09-152026-02-27
N2552REVNHR2D-10RF1PWR221T-50-10R0FRiedon Power Resistor (Thick Film / Metal Foil / Wirewound)2025-09-152026-02-27
N2552REVPF2202-0R1F1PWR220T-20-0R10FRiedon Power Resistor (Thick Film / Metal Foil / Wirewound)2025-09-152026-02-27

Sample rows are copied verbatim from the paid dataset file.

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Get the full dataset

All 1,498 records are in the Bourns — Electronic Component EOL & Migration Dataset v1 file.

Price: 0.01 USDC · Protocol: HTTP 402 (x402, Base) · GET /data/bourns-eol-migration-v1.md → 402 → pay → 200

Get the full dataset (0.01 USDC) · All Bourns datasets

Frequently asked questions

How do I check whether a specific Bourns 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 Bourns 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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