Is there a pin-compatible replacement for SLO1040H470MTT?

SMMS1040-470M from SXN appears to be a form-fit compatible alternative, meaning it shares a similar package size (1040). However, pin-to-pin compatibility and land pattern match should always be confirmed by comparing datasheets.

What risks should I check before replacing SLO1040H470MTT?

Key risks include differences in DC Resistance (DCR), which affects efficiency; current ratings (Isat and Idc), which affect performance under load; operating temperature range; and physical package dimensions, which impact PCB layout.

SLO1040H470MTT Alternatives, Datasheet & Cross Reference | Sunltech

Finding a replacement for the SLO1040H470MTT 47µH power inductor involves checking key parameters like current rating, DCR, and package size. Several functional alternatives exist, but require careful review of electrical and mechanical specifications.

AI replacement insight

Electrical riskmedium

Candidates have varying DCR and current ratings.

Package riskhigh

Many alternatives are not form-fit compatible.

Can it be replaced directly?

No verified direct drop-in replacement has been identified. The closest candidate, SMMS1040-470M, requires review of its lower temperature rating.

Best replacement path

SMMS1040-470M is the most promising path, offering similar form-fit and improved saturation current, but requires validating the lower max temperature.

Main risk

The primary risks are thermal performance due to different DCR and operating temperature ranges, and mechanical incompatibility with candidates in different packages.

Recommended alternatives

A strong form-fit alternative with higher saturation current, but a lower maximum temperature rating.

View details

Alternative comparison matrix

Feature / factor	SLO1040H470MTT	SMMS1040-470M	SMDRI127-470MT	SLO0650H470MTT	Compatibility / risk
Package	1040 (10.3x11.5x4.0mm)	1040 (11.5x10.2x4.0mm)	12.3x12.3x8.0mm	SMD (0650)	1040 (11.5x10.2x4.0mm) / 12.3x12.3x8.0mm / SMD (0650) — Package code and dimensions are compatible.; SMDRI127-470MT: Significantly larger, requires board redesign.; SLO0650H470MTT: Likely smaller package, requires layout check.
Current	Isat: 3.7A, Idc: 3.0A	Isat: 4.5A, Idc: 3.0A	Isat: 4.6A, Idc: 2.5A	Isat: 2.8A, Idc: 2.0A	Isat: 4.5A, Idc: 3.0A / Isat: 4.6A, Idc: 2.5A / Isat: 2.8A, Idc: 2.0A — Higher saturation current, same heat rating.; SMDRI127-470MT: Lower heat rating current (Idc).; SLO0650H470MTT: Significantly lower current ratings.
Temperature	-55°C to +150°C	-55°C to +125°C	-40°C to +125°C	-	-55°C to +125°C / -40°C to +125°C — Lower maximum operating temperature.; SMDRI127-470MT: Narrower operating temperature range.
Resistance	101 mΩ	141 mΩ	100 mΩ Max	252 mΩ	141 mΩ / 100 mΩ Max / 252 mΩ — Slightly higher DCR.; SMDRI127-470MT: Lower DCR improves efficiency.; SLO0650H470MTT: Much higher DCR increases power loss.
Inductance	47 µH	-	-	47 µH	47 µH — matched

Application & sourcing insights

Questions & answers

SXN's SMMS1040-470M is a strong candidate with a similar package and higher saturation current, but has a lower maximum operating temperature (125°C vs 150°C) that must be verified for your application.