Is there a pin-compatible replacement for SMNR4030-470MT?

No, a fully verified pin-compatible replacement is not available. PNLS4030-470M 47UH shares the same package and key electricals but has a lower temperature rating, which requires engineering review before use.

What risks should I check before replacing SMNR4030-470MT?

Before replacing SMNR4030-470MT, you must check the maximum operating temperature of your application, as the closest alternative has a lower rating (85°C vs 125°C). Also, verify the impact of any minor differences in DCR and saturation current on your power supply's stability and efficiency.

SMNR4030-470MT Alternatives, Datasheet & Cross Reference | SXN

SMNR4030-470MT is a 47µH power inductor in a 4030 package. While no verified drop-in replacement exists, several parametric and functional alternatives are available that require engineering review, primarily for operating temperature and package size.

AI replacement insight

Electrical riskhigh

Using a part with incorrect inductance or a lower temperature rating can cause circuit malfunction or damage.

Package riskmedium

While form-fit parts exist, pin compatibility and exact dimensions should always be verified from the datasheet.

Can it be replaced directly?

No direct drop-in replacement has been verified. The PNLS4030-470M is a very close match but has a lower maximum operating temperature of 85°C, which must be verified against your application's requirements.

Best replacement path

PNLS4030-470M 47UH

Main risk

The primary risk is the reduced maximum operating temperature of the closest alternative, which could lead to failure in high-temperature environments.

Recommended alternatives

A form-fit alternative with matching inductance but a lower maximum operating temperature.

View details

Alternative comparison matrix

Feature / factor	SMNR4030-470MT	PNLS4030-470M 47UH	SMNR4030-330MT	Compatibility / risk
Package	4030	4030	4030	4030 — Same package size (4.0mm x 4.0mm).; SMNR4030-330MT: Same package and series.
Inductance	47 µH	47 µH	33 µH	47 µH / 33 µH — Inductance matches target.; SMNR4030-330MT: Significantly lower inductance.
Saturation Current	0.95 A	0.98 A	1.1 A	0.98 A / 1.1 A — Slightly higher saturation current.; SMNR4030-330MT: Higher saturation current.
Dcr	0.445 Ω (typ)	0.46 Ω	0.42 Ω	0.46 Ω / 0.42 Ω — DCR is comparable to target's typical value.; SMNR4030-330MT: Lower DCR is beneficial.
Temperature	-40°C to +125°C	-40°C to +85°C	-	-40°C to +85°C — Reduced maximum operating temperature.

Application & sourcing insights

Questions & answers

The best alternative depends on your design constraints. PNLS4030-470M 47UH is a strong candidate if your application's maximum temperature does not exceed 85°C. If not, a redesign with a different part may be necessary.