Best Alternatives to FNR5020S2R2MT

Package: 5.0mm x 5.0mmShenzhen CJiang Technology Co., Ltd.ChokesInductance: 2.2 µHTolerance: ±20%Saturation Current (Isat): 4 ARated Current (Irms): 3.1 ADC Resistance (DCR) Typ.: 56 mΩ

FNR5020S2R2MT is a 2.2µH shielded power inductor in a 5x5mm package, commonly used in DC-DC converters. Several alternatives are available, with HPC5020NF-2R2M being a strong pin-compatible candidate with improved performance.

AI replacement insight

Electrical risklow

Most candidates have different electricals. HPC5020NF-2R2M is an upgrade, posing minimal risk.

Package riskmedium

Several alternatives have different heights. HPC5020NF-2R2M appears to match, but land pattern verification is crucial.

Can it be replaced directly?

Direct replacement for FNR5020S2R2MT should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

HPC5020NF-2R2M from TAI-TECH is the best replacement path, offering matching form-factor and improved electrical characteristics.

Main risk

The primary risk is ensuring the PCB land pattern is identical, as minor variations can exist between manufacturers. Always verify the candidate's datasheet.

Recommended alternatives

4
HPC5020NF-2R2M package
Needs validationlow risk

A strong alternative with matching package, inductance, and improved current ratings and DCR.

View details

Alternative comparison matrix

Feature / factorFNR5020S2R2MTHPC5020NF-2R2MYNR5040-2R2NFNR5020S3R3MTCompatibility / risk
Package5.0mm x 5.0mm x ~2.0mm5.0mm x 5.0mm x 2.0mm5.0mm x 5.0mm x 4.0mm5.0mm x 5.0mm x 2.0mm5.0mm x 5.0mm x 2.0mm / 5.0mm x 5.0mm x 4.0mm / 5.0mm x 5.0mm x 1.2mm — Package dimensions appear to match.; YNR5040-2R2N: Significantly taller (4.0mm vs ~2.0mm).; FNR5020S3R3MT: Same package family, likely form-fit compatible.; YNR5012-2R2M: Shorter height (1.2mm vs ~2.0mm).
Resistance56 mΩ typ32 mΩ25 mΩ max3.3 µH32 mΩ / 25 mΩ max / 3.3 µH / 2.2uH — Significantly lower DCR improves efficiency.; YNR5040-2R2N: Lower DCR improves efficiency.; FNR5020S3R3MT: Inductance is higher, will change circuit behavior.; YNR5012-2R2M: Inductance value matches.
CurrentIrms: 3.1A, Isat: 4AIrms: 3.3A, Isat: 4.1AIrms: 3.8A, Isat: 4.9AIrms: 2.7A, Isat: 3AIrms: 3.3A, Isat: 4.1A / Irms: 3.8A, Isat: 4.9A / Irms: 2.7A, Isat: 3A / Irms: 1.7A, Isat: 3.1A — Slightly higher current ratings.; YNR5040-2R2N: Higher current ratings provide more margin.; FNR5020S3R3MT: Both rated and saturation currents are lower.; YNR5012-2R2M: Rated current is nearly 50% lower.
Tolerance±20%-±30%-±30% — Wider tolerance may affect circuit precision.

Application & sourcing insights

Questions & answers

Verified drop-in options for FNR5020S2R2MT are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.