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Best Alternatives to LMBR140T1G

Package: SOD-123LRCDiodes - Rectifiers - SingleReverse Voltage (VR): 40 VAverage Rectified Forward Current (Io): 1 AForward Voltage (VF): 0.56 VReverse Current (IR): 30 µAForward Surge Current (IFSM): 5.5 A

LMBR140T1G is a 40V, 1A Schottky diode in a SOD-123 package. Several pin-compatible alternatives like 1N5819W and B5819W exist, along with upgrade options offering higher current ratings.

AI replacement insight

Electrical risklow

Many candidates match key specs. Check datasheet for Vf and Ir.

Package risklow

SOD-123 is a standard package. Some candidates have SOD-123FL variants to avoid.

Can it be replaced directly?

Yes, parts like 1N5819W and B5819W are considered direct, pin-compatible replacements for LMBR140T1G, sharing the same package and key electrical ratings.

Best replacement path

Use a pin-compatible 1A/40V Schottky like 1N5819W or B5819W for a direct replacement.

Main risk

The main risk is overlooking secondary electrical parameters like forward voltage (Vf) and reverse leakage (Ir), which can affect efficiency and performance in sensitive circuits.

Recommended alternatives

4
1N5819W package
1N5819W

Slkor(SLKORMICRO Elec.)

Needs validationlow risk

A common industry equivalent with matching package, voltage, and current ratings.

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Alternative comparison matrix

Feature / factorLMBR140T1G1N5819WB5819WDSK24Compatibility / risk
PackageSOD-123SOD-123--SOD-123 — Package matches. Note SOD-123FL variant exists.
Diode TypeSchottkySchottky--Schottky — Functional type matches.
Voltage40V40V--40V — Reverse voltage matches.
Current1A1A--2A — Higher current rating provides more margin.

Application & sourcing insights

Questions & answers

The best alternatives for LMBR140T1G are 1N5819W and B5819W. They are widely available, pin-compatible, and share the same critical 40V, 1A Schottky specifications.