Is there a pin-compatible replacement for SMMS1050-5R6M?

Several inductors like FHC1050-5R5M use the same 1050 package and are physically compatible. However, electrical differences mean they are not guaranteed drop-in replacements and require engineering review.

What risks should I check before replacing SMMS1050-5R6M?

Key risks include using an inductor with lower saturation current (Isat), which can cause performance loss at peak loads, or different inductance, which will change the power converter's ripple current and control loop stability.

SMMS1050-5R6M Alternatives, Datasheet & Cross Reference | SXN

SMMS1050-5R6M is a 5.6µH shielded power inductor in a 1050 package, rated for 13A saturation current. Finding a replacement requires matching inductance, current ratings, and physical size.

AI replacement insight

Electrical riskmedium

Candidates have variations in inductance or saturation current requiring review.

Package risklow

The 1050 package is common and candidates match the form factor.

Can it be replaced directly?

No perfect direct replacement was found. FHC1050-5R5M is the closest parametric match but has a slightly lower saturation current (12A vs 13A).

Best replacement path

The best path is to use a part with matching or better Isat, Irms, and DCR, and nearly identical inductance, such as FHC1050-5R5M, after verifying the Isat margin.

Main risk

The main risk is using a part with lower saturation current, which can cause instability or efficiency loss at peak loads.

Recommended alternatives

A close parametric match with similar inductance, lower DCR, and higher Irms, but slightly lower saturation current.

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Alternative comparison matrix

Feature / factor	SMMS1050-5R6M	FHC1050-5R5M	MDA1050-4R7M	Compatibility / risk
Package	1050	1050	1050	1050 — Package dimensions appear identical.; MDA1050-4R7M: Package dimensions appear identical.
Inductance	5.6 µH	5.5 µH	4.7 µH	5.5 µH / 4.7 µH — Negligible difference.; MDA1050-4R7M: Lower inductance will alter circuit behavior.
Saturation Current	13.0 A	12.0 A	16.0 A	12.0 A / 16.0 A — Slightly lower Isat, requires verification.; MDA1050-4R7M: Higher Isat provides more margin.
Rms Current	8.5 A	10.0 A	15.0 A	10.0 A / 15.0 A — Higher Irms provides more thermal margin.; MDA1050-4R7M: Significantly higher Irms.
Dcr	18.9 mΩ	10.3 mΩ	9.3 mΩ	10.3 mΩ / 9.3 mΩ — Lower DCR improves efficiency.; MDA1050-4R7M: Lower DCR improves efficiency.

Application & sourcing insights

Questions & answers

FHC1050-5R5M is a strong candidate, offering similar inductance and better DCR/Irms, but requires checking if its slightly lower 12A saturation current is acceptable for your application.