Is there a pin-compatible replacement for SMS1040-330MT?

Currently, no replacement has been verified as 100% pin-compatible. FXL1050-330-M is the closest candidate, but its footprint and height must be checked against the datasheet to confirm compatibility.

What risks should I check before replacing SMS1040-330MT?

The primary risk is physical incompatibility. Check the candidate's package dimensions (length, width, and height) to ensure it fits your PCB layout. Also, verify that the saturation current (Isat) and thermal current (Irms) meet or exceed the original part's ratings.

SMS1040-330MT Alternatives, Datasheet & Cross Reference | Shenzhen Lantu Micro Electric Technology Co., Ltd.

SMS1040-330MT is a 33µH, 3.5A SMD power inductor. Alternatives exist with similar or better electrical performance, but package compatibility is the primary concern and requires careful verification.

AI replacement insight

Package riskhigh

No candidates are a confirmed package match. Footprint and height must be verified.

Electrical risklow

Candidates with similar or better electrical specifications are available.

Can it be replaced directly?

No confirmed direct drop-in replacement has been identified. FXL1050-330-M is a strong candidate but requires package verification before it can be considered a drop-in.

Best replacement path

FXL1050-330-M offers a very close electrical match, but its package (10x11.5mm) and height must be verified against the target's 11.5x10x4mm footprint.

Main risk

Package mismatch is the main risk. Alternatives may not fit the existing PCB layout without modification, even if electrically compatible.

Recommended alternatives

A strong electrical match; verify package footprint and height (10x11.5mm vs 11.5x10x4mm) before use.

View details

Alternative comparison matrix

Feature / factor	SMS1040-330MT	FXL1050-330-M	FXL1365-330-M	Compatibility / risk
Package	11.5x10x4mm	10x11.5mm	13.45mm x 12.6mm	10x11.5mm / 13.45mm x 12.6mm — Dimensions are swapped vs target (11.5x10mm). Verify footprint and height.; FXL1365-330-M: Significantly larger, requires PCB redesign.
Saturation Current A	5.0A	5.2A	8.0A	5.2A / 8.0A — Slightly higher saturation current.; FXL1365-330-M: Higher saturation current provides more margin.
Current A	3.5A	4.2A	6.5A	4.2A / 6.5A — Higher thermal current rating.; FXL1365-330-M: Higher thermal current rating.
Dcr Ohm	85mΩ	86mΩ	65mΩ	86mΩ / 65mΩ — Slightly higher DCR, likely negligible.; FXL1365-330-M: Lower DCR improves efficiency.

Application & sourcing insights

Questions & answers

The best alternative is likely FXL1050-330-M from cjiang, which has similar electrical specs. However, you must verify its package (10x11.5mm) fits your 11.5x10x4mm layout.