Is there a pin-compatible replacement for SMNR6045-151MT?

No, a pin-compatible replacement in the same 6045 package with 150uH inductance was not identified in this review. All functional alternatives require a PCB layout change due to different package sizes.

What risks should I check before replacing SMNR6045-151MT?

The primary risk is physical incompatibility. You must verify that the larger package of any alternative (e.g., 8040 or 12.3x12.3mm) fits your PCB layout. Electrically, the alternatives are upgrades, which is low risk.

SMNR6045-151MT Alternatives, Datasheet & Cross Reference | SXN

Finding a substitute for the SMNR6045-151MT inductor involves balancing electrical performance with physical size. While no direct drop-in replacements were found, several functional alternatives offer improved current handling in different package sizes.

AI replacement insight

Package riskhigh

All viable alternatives have a different, larger footprint, requiring a PCB redesign.

Electrical risklow

Candidates offer superior current handling and lower DCR, which is generally a safe upgrade.

Can it be replaced directly?

No, a direct, drop-in replacement for the SMNR6045-151MT was not found. All suitable electrical alternatives require a change in the PCB layout due to different package sizes.

Best replacement path

Use a functional alternative like SMNR8040-151MT if the PCB layout can accommodate a larger 8040 footprint. This provides an electrical upgrade with higher current handling and lower resistance.

Main risk

Package Mismatch

Recommended alternatives

Offers better electrical performance with the same inductance but requires a larger 8040 footprint.

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Alternative comparison matrix

Feature / factor	SMNR6045-151MT	SMNR8040-151MT	SMDRI127-151MT	Compatibility / risk
Inductance	150uH	150uH	150uH	150uH — Inductance matches target.; SMDRI127-151MT: Inductance matches target.
Saturation Current	0.8A	1.1A	2.7A	1.1A / 2.7A — Higher saturation current provides more margin.; SMDRI127-151MT: Significantly higher saturation current.
Dcr	0.58Ω	0.41Ω	0.28Ω	0.41Ω / 0.28Ω — Lower DCR improves efficiency.; SMDRI127-151MT: Significantly lower DCR improves efficiency.
Package	6045 (6x6mm)	8040 (8x8mm)	12.3x12.3mm	8040 (8x8mm) / 12.3x12.3mm — Larger footprint requires PCB redesign.; SMDRI127-151MT: Much larger footprint requires major PCB redesign.

Application & sourcing insights

Questions & answers

The best alternative depends on your board space. If a slightly larger 8x8mm footprint is acceptable, the SMNR8040-151MT offers better current ratings and lower resistance. No direct drop-in replacement was found.