Is there a pin-compatible replacement for MWSA0503S-4R7MT?

Currently, no pin-to-pin compatible replacement has been confirmed. All identified alternatives have different physical dimensions and require careful layout verification.

What risks should I check before replacing MWSA0503S-4R7MT?

The main risk is the package mismatch; verify the PCB footprint. Also check DCR, as some alternatives have higher resistance which increases power loss. Always review the full datasheet.

MWSA0503S-4R7MT Alternatives, Datasheet & Cross Reference | Shenzhen Sunlord Electronics Co., Ltd.

MWSA0503S-4R7MT is a 4.7µH molded SMD power inductor from Sunlord. While no direct drop-in replacements have been verified, several functional alternatives with superior electrical characteristics but different package sizes are available, requiring board layout changes.

AI replacement insight

Package riskhigh

No drop-in package found; all alternatives require layout changes.

Electrical risklow

Multiple candidates offer superior current handling and lower DCR.

Sourcing riskmedium

Good alternatives exist from the original and other manufacturers.

Can it be replaced directly?

No direct pin-compatible replacement for MWSA0503S-4R7MT has been verified. All candidates require package and footprint review.

Best replacement path

For an electrical upgrade, consider Sunlord's SWPA6045S4R7MT or Sunltech's SLO0630H4R7MTT, but both require a larger PCB footprint.

Main risk

The primary risk is physical incompatibility; all strong electrical alternatives have different, typically larger, package footprints requiring PCB redesign.

Recommended alternatives

Functional alternative from the same manufacturer with better current ratings and lower DCR, but in a different package.

View details

Alternative comparison matrix

Feature / factor	MWSA0503S-4R7MT	SWPA6045S4R7MT	SLO0630H4R7MTT	WPN4020H4R7MT	Compatibility / risk
Package	5.2x5.4mm	6045 (6.0x6.0mm)	-	-	4020 (4.0x4.0mm) — Smaller footprint requires PCB redesign.
Current	3.0 A	3.5 A	-	-	5.5 A — Significantly higher RMS current.
Saturation Current A	4.6 A	5.5 A	-	-	9.0 A — Significantly higher saturation current.
Dcr Ohm	85 mΩ	30 mΩ	-	-	225 mΩ — Significantly higher DCR increases power loss.
Manufacturer	Sunlord	-	Sunltech	-	Sunltech — Cross-vendor alternative.
Temperature	-40°C to +125°C	-	-55°C to +150°C	-	-55°C to +150°C — Wider operating range.

Application & sourcing insights

Questions & answers

Sunlord's SWPA6045S4R7MT offers better current ratings and lower DCR but in a larger 6045 package. For a significant upgrade, Sunltech's SLO0630H4R7MTT is an option, also in a larger package.