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Best Alternatives to LRB521CS-30T5G

Package: SOD-923LRCDiodes - Rectifiers - SingleDiode Type: SchottkyVoltage - DC Reverse (Vr) (Max): 30 VCurrent - Average Rectified (Io): 100 mAForward Voltage (Vf) (Max) @ If: 0.4 V @ 20 mACurrent - Reverse Leakage @ Vr: 10 µA @ 10 V

Finding a substitute for the LRC LRB521CS-30T5G, a 30V 100mA Schottky diode in a SOD-923 package, involves matching its compact footprint and key electrical ratings. Several alternatives exist but require careful review.

AI replacement insight

Package risklow

For candidates with matching SOD-923 packages, physical fit risk is low.

Electrical riskmedium

Vf and Ir differences require circuit-level analysis. Data conflicts in some candidates increase risk.

Can it be replaced directly?

Direct replacement for LRB521CS-30T5G should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

The most promising path is LRB520CS-30T5G, due to shared manufacturer and package. Other SOD-923 parts require careful datasheet validation.

Main risk

The main risk is substituting with a part that has a different forward voltage (Vf) or reverse leakage (Ir), which could affect circuit efficiency.

Recommended alternatives

3
LRB520CS-30T5G package
LRB520CS-30T5G

LRC

Needs validationlow risk

A potential pin-compatible alternate from the same manufacturer with a slightly higher forward voltage.

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Alternative comparison matrix

Feature / factorLRB521CS-30T5GLRB520CS-30T5GRB521C30RB521CS-30Compatibility / risk
PackageSOD-923SOD-923SOD-923SOD-923SOD-923 — Form and fit match.; RB521C30: Form and fit match.; RB521CS-30: Form and fit match.
Voltage30V30V30V30V30V — Reverse voltage matches.; RB521C30: Reverse voltage matches.; RB521CS-30: Reverse voltage matches.
Current100mA100mA100-200mA100-200mA100mA / 100-200mA — Average rectified current matches.; RB521C30: Conflicting data; may be an upgrade.; RB521CS-30: Conflicting data; may be an upgrade.
Forward Voltage0.4V @ 20mA0.5V @ 20mAUnknownUnknown0.5V @ 20mA / Unknown — Slightly higher Vf, may increase power loss.; RB521C30: Conflicting data requires datasheet check.; RB521CS-30: Conflicting data requires datasheet check.
Reverse Leakage10µA @ 10V0.5µA @ 10V--0.5µA @ 10V — Lower leakage is an improvement.

Application & sourcing insights

Questions & answers

Verified drop-in options for LRB521CS-30T5G 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.