Is there a pin-compatible replacement for SM5845-100MT?

Based on this review, no pin-compatible replacements were found. Other parts in the SM5845 series have different inductance values, and all 10uH alternatives have different, larger packages.

What risks should I check before replacing SM5845-100MT?

The main risk is the physical package size. All functional alternatives are larger and require a new PCB layout. You must verify that the new component's dimensions fit your design. Electrically, the suggested alternatives are upgrades, but you should still simulate their impact on your circuit.

SM5845-100MT Alternatives, Datasheet & Cross Reference | SXN

Finding a substitute for the SXN SM5845-100MT 10uH power inductor involves a trade-off. While several functional alternatives offer superior current handling and efficiency, they come in larger packages that require a PCB layout change.

AI replacement insight

Package riskhigh

No alternatives share the SM5845 package. A PCB layout change is mandatory.

Electrical risklow

Proposed alternatives are electrically superior, with higher current ratings and lower DCR.

Can it be replaced directly?

No, there are no direct pin-compatible replacements for SM5845-100MT in this analysis. All suitable electrical alternatives require a different PCB footprint.

Best replacement path

Use a functional alternative like SMMS1360-100M for significantly better current handling, but be prepared for a PCB redesign due to its larger size.

Main risk

The primary risk is package incompatibility. All electrically suitable alternatives are physically larger and will not fit the existing SM5845 footprint.

Recommended alternatives

A functional alternative with 10uH inductance, higher saturation current (4.3A), and lower DCR, but in a different package.

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Alternative comparison matrix

Feature / factor	SM5845-100MT	PNLS8040-100M 10UH	SMMS1040-100M	SMMS1360-100M	Compatibility / risk
Inductance	10uH	10uH	10uH	10uH	10uH — Inductance matches target value.; SMMS1040-100M: Inductance matches target value.; SMMS1360-100M: Inductance matches target value.
Current	1.6A	4.3A	8.5A	12.5A	4.3A / 8.5A / 12.5A — Higher saturation current provides more margin.; SMMS1040-100M: Significantly higher saturation current.; SMMS1360-100M: Significantly higher saturation current provides more margin.
Dcr	0.1Ω	0.04Ω	0.034Ω	0.018Ω	0.04Ω / 0.034Ω / 0.018Ω — Lower DCR improves efficiency.; SMMS1040-100M: Lower DCR improves efficiency.; SMMS1360-100M: Much lower DCR improves efficiency.
Package	SM5845 (5.8x5.2mm)	8040 (8.0x8.0mm)	1040 (11.5x10.0mm)	1360 (13.8x12.6mm)	8040 (8.0x8.0mm) / 1040 (11.5x10.0mm) / 1360 (13.8x12.6mm) — Package is physically larger and not a drop-in.; SMMS1040-100M: Package is physically larger and not a drop-in.; SMMS1360-100M: Package is physically much larger and not a drop-in.

Application & sourcing insights

Questions & answers

The best alternative depends on your priority. For the highest electrical performance, SMMS1360-100M offers a much higher 12.5A saturation current and lower DCR. However, it is significantly larger and requires a PCB redesign.