Is there a pin-compatible replacement for SM5845-4R7MT?

No direct pin-compatible replacements have been identified in this review. All candidates have different package dimensions, requiring PCB layout verification and potential modification.

What risks should I check before replacing SM5845-4R7MT?

Key risks include package footprint mismatch, which requires PCB redesign. Also, check differences in shielding, as the target is unshielded while many alternatives are shielded, which can affect EMI performance.

SM5845-4R7MT Alternatives, Datasheet & Cross Reference | SXN

SM5845-4R7MT is a 4.7µH unshielded power inductor from SXN in a 5845 package, rated for 3.5A saturation current. When seeking replacements, careful attention to package size, shielding, and current ratings is essential.

AI replacement insight

Package riskhigh

No package-matched alternatives were found; all require layout changes.

Electrical risklow

Alternatives are generally upgrades or close matches on key electricals.

Can it be replaced directly?

No direct, drop-in replacement was found. All viable alternatives require a review of the physical package dimensions and may offer different shielding characteristics.

Best replacement path

Upgrade to a shielded inductor with higher current ratings like TDK's VLS6045EX-4R7M-H, but this requires verifying the slightly larger package fits the board layout.

Main risk

The primary risk is physical incompatibility due to different package footprints, requiring PCB layout changes.

Recommended alternatives

An electrical upgrade from the same manufacturer, but requires board layout review due to a larger footprint.

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Alternative comparison matrix

Feature / factor	SM5845-4R7MT	SMNR6045-4R7MT	VLS6045EX-4R7M-H	SWPA5040S4R7MT	Compatibility / risk
Package	5845 (~5.8x5.8mm)	6045 (~6.0x6.0mm)	6045 (6.0x6.3mm)	5040 (5.0x5.0mm)	6045 (~6.0x6.0mm) / 6045 (6.0x6.3mm) / 5040 (5.0x5.0mm) — Larger footprint requires layout change.; VLS6045EX-4R7M-H: Larger footprint requires layout change.; SWPA5040S4R7MT: Smaller footprint requires layout change.
Saturation Current A	3.5A	4.97A	5.8A	3.5A	4.97A / 5.8A / 3.5A — Higher current handling capability.; VLS6045EX-4R7M-H: Higher current handling capability.; SWPA5040S4R7MT: Saturation current matches.
Dcr Ohm	0.052Ω max	0.033Ω max	0.027Ω	0.039Ω max	0.033Ω max / 0.027Ω / 0.039Ω max — Lower resistance, higher efficiency.; VLS6045EX-4R7M-H: Lower resistance, higher efficiency.; SWPA5040S4R7MT: Lower resistance, higher efficiency.
Shielding	Unshielded	Shielded	-	Shielded	Shielded — May improve EMI performance.; SWPA5040S4R7MT: May improve EMI performance.
Features	Unshielded	-	Shielded, AEC-Q200	-	Shielded, AEC-Q200 — Shielded and automotive grade.

Application & sourcing insights

Questions & answers

VLS6045EX-4R7M by TDK offers superior current ratings and lower DCR, but has a slightly larger footprint. SWPA5040S4R7MT by Sunlord is electrically similar but has a smaller footprint. Both require layout review.