What risks should I check before replacing SWPA5040S4R7MT?

First, verify the package and footprint match. Second, ensure the substitute's saturation (Isat) and RMS (Irms) currents meet your needs. Finally, check DC Resistance (DCR), as a higher value can reduce efficiency.

SWPA5040S4R7MT Alternatives, Datasheet & Cross Reference | Shenzhen Sunlord Electronics Co., Ltd.

Find and compare alternatives for the Sunlord SWPA5040S4R7MT, a 4.7µH power inductor in a 5040 package. This guide reviews pin-compatible options and functional upgrades for your design.

AI replacement insight

Electrical riskmedium

Pin-compatible option has slightly lower saturation current.

Package riskhigh

Functional alternates require a new PCB footprint.

Sourcing risklow

Multiple alternatives from different vendors are available.

Can it be replaced directly?

Direct replacement for SWPA5040S4R7MT should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

For a drop-in, review NRS5040T4R7NMGK for its slightly lower current. For a redesign, VLS6045EX-4R7M-H is a strong electrical upgrade.

Main risk

The main risk is either accepting a minor electrical downgrade for a pin-compatible part or redesigning the PCB for a larger, superior alternative.

Recommended alternatives

Pin-compatible in a 5040 package with matching inductance, but has a slightly lower saturation current.

View details

Alternative comparison matrix

Feature / factor	SWPA5040S4R7MT	NRS5040T4R7NMGK	SMNR6045-4R7MT	VLS6045EX-4R7M-H	Compatibility / risk
Package	5040	5040	6045	6045	5040 / 6045 — Identical package and footprint.; SMNR6045-4R7MT: Larger package requires PCB redesign.; VLS6045EX-4R7M-H: Larger package requires PCB redesign.
Inductance	4.7µH	4.7µH	4.7µH	4.7µH	4.7µH — matched; SMNR6045-4R7MT: matched; VLS6045EX-4R7M-H: matched
Saturation Current	3.5A	3.3A	4.97A	5.8A	3.3A / 4.97A / 5.8A — Slightly lower than target, requires validation.; SMNR6045-4R7MT: Higher saturation current is an upgrade.; VLS6045EX-4R7M-H: Significant upgrade in current handling.
Dcr	0.030Ω	0.029Ω	0.026Ω	0.027Ω	0.029Ω / 0.026Ω / 0.027Ω — Lower DCR improves efficiency.; SMNR6045-4R7MT: Lower DCR improves efficiency.; VLS6045EX-4R7M-H: Lower DCR improves efficiency.
Temperature	-40°C to +125°C	-40°C to +125°C	-	-	-40°C to +125°C — matched

Application & sourcing insights

Questions & answers

Verified drop-in options for SWPA5040S4R7MT 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.