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Best Alternatives to MBR120LSF

Package: SOD-123SHIKUESDiodes - Rectifiers - SingleDiode Type: SchottkyVoltage - DC Reverse (Vr) (Max): 20 VCurrent - Average Rectified (Io): 1 AVoltage - Forward (Vf) (Max) @ If: 0.6 V @ 1 ACurrent - Reverse Leakage @ Vr: 1 mA @ 20 V

The MBR120LSF is a 20V, 1A Schottky rectifier in a SOD-123 package. Several compatible alternatives are available, including direct parametric matches and upgrades with higher voltage or current ratings.

AI replacement insight

Electrical risklow

Candidates have matched or higher voltage/current. Vf and Ir should be verified.

Package risklow

Most candidates use the same SOD-123 package. One candidate (DSS24) may use SOD-123FL, which needs verification.

Sourcing risklow

Alternatives like 1N5819W are common, multi-sourced parts, potentially improving availability.

Can it be replaced directly?

Direct replacement for MBR120LSF should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

The 1N5819W is a widely available upgrade path, offering a higher 40V rating in the same package. For a direct parametric match, the B5817W is a strong candidate.

Main risk

The primary risk when substituting Schottky diodes is a mismatch in dynamic characteristics, specifically forward voltage (Vf) and reverse leakage current (Ir), which can affect circuit efficiency and power loss.

Recommended alternatives

3
1N5819W package
1N5819W

Slkor(SLKORMICRO Elec.)

Needs validationlow risk

A form-fit-function compatible upgrade with a higher 40V rating, offering increased voltage margin.

View details

Alternative comparison matrix

Feature / factorMBR120LSF1N5819WB5817WDSS24Compatibility / risk
PackageSOD-123SOD-123--SOD-123 / SOD-123FL — SOD-123FL is footprint compatible but has a different profile.
Diode TypeSchottkySchottky--Schottky — Diode type matches.
Voltage20V40V--40V — Higher voltage rating provides more design margin.
Current1A1A--2A — Higher current rating provides more design margin.
Forward Voltage0.6V @ 1A-0.45V @ 1A-0.45V @ 1A — Lower forward voltage offers higher efficiency.

Application & sourcing insights

Questions & answers

Verified drop-in options for MBR120LSF are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.