Is there a pin-compatible replacement for SMMS0850-680M?

Currently, no pin-compatible replacement has been verified. All known alternatives with similar electrical characteristics have different, larger package sizes, which would require a PCB layout change.

What risks should I check before replacing SMMS0850-680M?

The main risk is the physical package size; ensure the larger footprint of any alternative fits your layout. Also, verify that the improved electrical characteristics (lower DCR, higher current) do not negatively impact circuit behavior, such as EMI performance.

SMMS0850-680M Alternatives, Datasheet & Cross Reference | SXN

SMMS0850-680M is a 68µH shielded power inductor in an 8.5x8.0mm package. While no direct drop-in replacements have been identified, several functional alternatives with higher current ratings exist in larger packages.

AI replacement insight

Package riskhigh

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

Electrical risklow

Candidates offer superior current handling and lower DCR, which is generally beneficial.

Can it be replaced directly?

No direct pin-compatible replacement for SMMS0850-680M has been verified. All potential candidates require careful review of package dimensions.

Best replacement path

Consider functional alternatives like FCH1365-680M or CYA1265-68UH if board space allows for a larger footprint (approx. 13x13mm).

Main risk

The primary risk is package mismatch. All reviewed alternatives are significantly larger than the target part, requiring a board redesign.

Recommended alternatives

A functional alternative with the same inductance and much higher current handling, but in a larger package.

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Alternative comparison matrix

Feature / factor	SMMS0850-680M	CYA1265-68UH	FCH1365-680M	Compatibility / risk
Inductance	68 µH	68 µH	68 µH	68 µH — Inductance matches target value.; FCH1365-680M: Inductance matches target value.
Saturation Current A	2.8 A	9.0 A	5.5 A	9.0 A / 5.5 A — Significantly higher saturation current provides ample margin.; FCH1365-680M: Higher saturation current provides more margin.
Dcr Ohm	310 mΩ	110 mΩ	103 mΩ	110 mΩ / 103 mΩ — Lower DCR improves efficiency.; FCH1365-680M: Lower DCR improves efficiency.
Package	8.5mm x 8.0mm x 5.0mm	13.8mm x 12.8mm	13.7mm x 12.8mm	13.8mm x 12.8mm / 13.7mm x 12.8mm — Significantly larger footprint requires board redesign.; FCH1365-680M: Significantly larger footprint requires board redesign.

Application & sourcing insights

Questions & answers

If your design can accommodate a larger footprint (approx. 13x13mm), FCH1365-680M and CYA1265-68UH are strong functional alternatives with higher current ratings. No drop-in replacement has been found.