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Best Alternatives to SFE4018A-4R7M-F-HF

Package: 4018LEDdynamics, Inc.ChokesInductance: 4.7 µHTolerance: ±20%Saturation Current (Isat): 2.2 ARated Current (Irms): 2.0 ADC Resistance (Max): 0.117 Ω

Find the best alternatives for the SFE4018A-4R7M-F-HF, a 4.7µH power inductor. This guide reviews pin-compatible options, functional alternates, and parametric trade-offs to help you make an informed decision.

AI replacement insight

Electrical riskmedium

Several candidates have lower current ratings, which is a primary risk.

Package riskhigh

Functional alternates have different footprints requiring board changes.

Sourcing risklow

Multiple manufacturers offer similar parts, providing sourcing flexibility.

Can it be replaced directly?

Direct replacement for SFE4018A-4R7M-F-HF should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

The Magnetsyc NR4018S4R7MT is the most promising path, offering a matching package and improved current ratings.

Main risk

The main risk is using a substitute with lower current ratings (Irms or Isat), which can lead to overheating or performance degradation.

Recommended alternatives

4
NR4018S4R7MT package
NR4018S4R7MT

Magnetsyc

Needs validationlow risk

Strong candidate with matching package and improved current ratings, likely a pin-to-pin replacement.

View details

Alternative comparison matrix

Feature / factorSFE4018A-4R7M-F-HFNR4018S4R7MTSWPA4018S4R7MTVLS3012HBX-4R7MCompatibility / risk
Package40184018401830124018 / 3012 / 6045 — Same package code. Verify land pattern from datasheet.; SWPA4018S4R7MT: Same package code.; VLS3012HBX-4R7M: Smaller package (3.0x3.0mm). Not a drop-in replacement.; VLS6045EX-4R7M-H: Larger package (6.0x6.3mm). Not a drop-in replacement.
Inductance4.7µH4.7µH--4.7µH — Inductance matches.
Current2.0A2.3A1.8A2.51A2.3A / 1.8A / 2.51A / 5.8A — Higher RMS current rating is a safe upgrade.; SWPA4018S4R7MT: Lower RMS current rating. Requires circuit analysis.; VLS3012HBX-4R7M: Higher RMS current rating.; VLS6045EX-4R7M-H: Significantly higher current rating.
Saturation Current2.2A2.3A2.2A-2.3A / 2.2A — Higher saturation current provides more margin.; SWPA4018S4R7MT: Saturation current matches.
Dcr0.117Ω0.117Ω0.09Ω0.201Ω0.117Ω / 0.09Ω / 0.201Ω / 0.027Ω — DC resistance is identical.; SWPA4018S4R7MT: Lower DCR improves efficiency.; VLS3012HBX-4R7M: Significantly higher DCR will reduce efficiency.; VLS6045EX-4R7M-H: Significantly lower DCR improves efficiency.

Application & sourcing insights

Questions & answers

Verified drop-in options for SFE4018A-4R7M-F-HF 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.