Is there a pin-compatible replacement for SMNR8040-101MT?

Currently, no pin-compatible, drop-in replacement has been confirmed. Alternatives exist but are in different package sizes, such as 10.3x10.3mm, which are not direct fits for the 8x8mm footprint.

What risks should I check before replacing SMNR8040-101MT?

The main risk is the package mismatch; verify the new part's footprint and height fit your board layout. Also, check for minor differences in DC Resistance (DCR) which can affect power efficiency.

SMNR8040-101MT Alternatives, Datasheet & Cross Reference | SXN

SMNR8040-101MT is a 100µH shielded power inductor in an 8x8x4mm package. While no direct drop-in replacements are available, functional alternatives with better electricals exist in larger packages, requiring board layout changes.

AI replacement insight

Package riskhigh

No drop-in package found. All alternatives require a PCB redesign.

Electrical risklow

Alternatives have matching inductance and similar or better current/DCR ratings.

Can it be replaced directly?

No direct, pin-compatible replacement for SMNR8040-101MT has been verified. All suitable candidates require a change in the PCB layout due to different package sizes.

Best replacement path

Use a functional alternative like SMDRH104R-101MT for a higher current rating, but redesign the PCB layout to accommodate its larger 10.3x10.3mm footprint.

Main risk

The primary risk is mechanical incompatibility; all potential alternatives have different package dimensions and will not fit on the existing PCB footprint.

Recommended alternatives

Offers higher saturation current but has slightly higher DCR and a larger package requiring board redesign.

View details

Alternative comparison matrix

Feature / factor	SMNR8040-101MT	SMDRH104R-101MT	SMDRH105R-101MT	Compatibility / risk
Package	8.0x8.0x4.0mm	10.3x10.3x4.0mm	10.3x10.4x5.0mm	10.3x10.3x4.0mm / 10.3x10.4x5.0mm — Not a drop-in replacement, requires board redesign.; SMDRH105R-101MT: Not a drop-in replacement, requires board redesign.
Saturation Current A	1.15A	1.66A	1.5A	1.66A / 1.5A — Significantly higher current handling.; SMDRH105R-101MT: Higher current handling capability.
Dcr Ohm	0.29Ω	0.304Ω	0.247Ω	0.304Ω / 0.247Ω — Slightly higher DCR may reduce efficiency.; SMDRH105R-101MT: Lower DCR improves efficiency.
Inductance H	100µH	100µH	100µH	100µH — matched; SMDRH105R-101MT: matched

Application & sourcing insights

Questions & answers

SXN's SMDRH104R-101MT is a strong functional alternative, offering higher saturation current (1.66A vs 1.15A). However, it requires a PCB redesign for its larger 10.3x10.3mm package.