Is there a pin-compatible replacement for LMBR140ET1G?

No, a direct, verified pin-compatible replacement for the LMBR140ET1G is not available among the candidates reviewed. The closest option, DSS210, is in a SOD-123FL package and requires a layout check to confirm it fits the SOD-323HE pads.

What risks should I check before replacing LMBR140ET1G?

Before replacing LMBR140ET1G, you must check three main risks: 1) Package compatibility, as most alternatives require a board redesign. 2) Electrical parameters like reverse leakage, which can be higher in some candidates. 3) Forward voltage drop, which affects efficiency and thermal performance.

LMBR140ET1G Alternatives, Datasheet & Cross Reference | LRC

LRC LMBR140ET1G is a 40V, 1A Schottky diode in a compact SOD323HE package, ideal for high-efficiency, space-constrained applications. Finding a direct replacement requires careful review of package and electrical parameters.

AI replacement insight

Package riskhigh

Most candidates are in SMA/SMB packages, which are physically incompatible with the target's SOD323HE footprint.

Electrical riskmedium

Some candidates have significantly higher reverse leakage or different forward voltage characteristics that must be evaluated for the application.

Sourcing risklow

The target and candidates are active parts from various manufacturers, offering multiple sourcing options.

Can it be replaced directly?

No direct pin-for-pin replacement has been identified. All candidates require some level of design review or modification.

Best replacement path

The most promising alternative is DSS210, which offers upgraded voltage (100V) and current (2A) in a similarly sized SOD-123FL package. However, footprint verification is mandatory.

Main risk

The primary risk is package incompatibility. Most alternatives are in much larger SMA/SMB packages requiring a board redesign. The closest option, DSS210, still requires a footprint check.

Recommended alternatives

Upgraded voltage/current in a similar but not identical package; requires footprint verification.

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Alternative comparison matrix

Feature / factor	LMBR140ET1G	DSS210	SS36B	Compatibility / risk
Package	SOD323HE	SOD-123FL	-	DO-214AA (SMB) — Much larger package, requires board redesign.
Voltage	40V	100V	-	60V — Provides safety margin.
Current	1.0A	2.0A	-	3.0A — Higher current handling.
Reverse Leakage	30µA @ 40V	100µA @ 100V	-	100µA @ 100V — Higher leakage current may affect sensitive applications.

Application & sourcing insights

Questions & answers

The most promising alternative is DSS210 from SMC Diode Solutions. It offers higher voltage (100V) and current (2A) in a SOD-123FL package, which is dimensionally similar to the target's SOD-323HE. However, you must verify the PCB footprint compatibility before use.