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Best Alternatives to FNR4030S220MT

Package: 4030 (4.0mm x 4.0mm)Shenzhen CJiang Technology Co., Ltd.ChokesInductance: 22 µHTolerance: ±20%Saturation Current (Isat): 1.4 AHeat Rating Current (Irms): 1.2 ADC Resistance (DCR) Typ.: 292 mΩ

FNR4030S220MT is a 22uH shielded 4030 SMD power inductor. Reviewed candidates need FAE validation due to inductance mismatch.

AI replacement insight

Electrical riskhigh

Inductance mismatch affects ripple and stability.

Package riskmedium

4030 size matches, but pad layout is unverified.

Firmware risklow

Passive inductor; firmware impact is indirect.

Sourcing riskmedium

PDF review is pending for all candidates.

Can it be replaced directly?

Direct replacement for FNR4030S220MT should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

Review FNR4030S120MT or YNR4030-150M only if the circuit can accept lower inductance.

Main risk

All kept options have lower nominal inductance than 22uH.

Recommended alternatives

2
FNR4030S120MT package
FNR4030S120MT

cjiang (Changjiang Microelectronics Tech)

Needs validationhigh risk

FNR4030S120MT is a same-vendor 12uH candidate with stronger current ratings.

View details

Alternative comparison matrix

Feature / factorFNR4030S220MTFNR4030S120MTYNR4030-150MAlt 3Compatibility / risk
Package4030 4x4mm4030 4x4mm4030 4x4mm4030 4x4mm — same stated size; YNR4030-150M: height stated 3.0mm in summary
Pinout2 pins2 pins2 pins2 pins — pinout not checked; YNR4030-150M: pin function not checked
Application22uH12uH15uH12uH / 15uH — large L reduction; YNR4030-150M: nominal L is lower
Current1.4A Isat,1.2A Irms1.8A Isat,1.4A Irms1.65A Isat,1.11A heat1.8A Isat,1.4A Irms / 1.65A Isat,1.11A heat — current ratings higher; YNR4030-150M: heat current below target
Resistance330m max175m max190m typ,247m max175m max / 190m typ,247m max — lower DCR; YNR4030-150M: lower DCR

Application & sourcing insights

Questions & answers

Verified drop-in options for FNR4030S220MT 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.