Is there a pin-compatible replacement for NR4018S4R7MT?

Yes, parts like SFE4018A-4R7M-F-HF share the same 4018 package and pinout. However, they are not electrically equivalent, featuring lower current ratings that must be verified for your application.

What risks should I check before replacing NR4018S4R7MT?

The main risk is electrical stress. If you choose a replacement with the same package, verify its current ratings (both RMS/Irms and saturation/Isat) are sufficient for your circuit to prevent overheating and saturation. If you choose a part with a different package, you must account for the required PCB layout changes.

NR4018S4R7MT Alternatives, Datasheet & Cross Reference | Magnetsyc

Finding a replacement for the NR4018S4R7MT, a 4.7µH power inductor, requires careful consideration of current ratings. While several parts match its 4018 package, they typically offer lower performance, posing a potential downgrade risk.

AI replacement insight

Electrical riskmedium

All form-fit options have lower RMS and/or saturation current ratings.

Package risklow

Several alternatives share the same 4018 package, but require electrical validation.

Can it be replaced directly?

No direct, drop-in replacement with equivalent or better current ratings has been identified. All same-package alternatives have lower current handling capabilities.

Best replacement path

Use a form-fit part like SFE4018A-4R7M-F-HF if the circuit can tolerate a lower 2.0A current rating. For an upgrade, a board redesign is required for a part like VLS6045EX-4R7M-H.

Main risk

The primary risk is using a replacement with a lower current rating, which can lead to overheating or performance degradation.

Recommended alternatives

Form-fit match in a 4018 package, but has lower current ratings requiring engineering review.

View details

Alternative comparison matrix

Feature / factor	NR4018S4R7MT	SFE4018A-4R7M-F-HF	VLS6045EX-4R7M-H	Compatibility / risk
Package	4018	4018	6045	4018 / 6045 — Same 4.0x4.0mm footprint.; VLS6045EX-4R7M-H: Larger footprint (6.0x4.5mm) requires PCB redesign.
Inductance	4.7µH	4.7µH	4.7µH	4.7µH — Inductance value matches.; VLS6045EX-4R7M-H: Inductance value matches.
Current	2.3A	2.0A	4.2A	2.0A / 4.2A — Lower RMS current rating.; VLS6045EX-4R7M-H: Significantly higher RMS current rating (Itemp).
Saturation Current	2.3A	2.2A	5.8A	2.2A / 5.8A — Slightly lower saturation current.; VLS6045EX-4R7M-H: Significantly higher saturation current.
Dcr	0.117Ω	0.117Ω	0.027Ω	0.117Ω / 0.027Ω — DC resistance matches.; VLS6045EX-4R7M-H: Much lower DCR improves efficiency.

Application & sourcing insights

Questions & answers

The best alternative depends on your design constraints. SFE4018A-4R7M-F-HF is the closest form-fit option but has a lower 2.0A current rating. If a board redesign is possible, VLS6045EX-4R7M-H offers superior electrical performance.