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Best Alternatives to SM5819PL-TP

Package: SOD-123FLMicro Commercial Components Corp.RectifiersDiode Type: SchottkyVoltage - DC Reverse (Vr) (Max): 40 VCurrent - Average Rectified (Io): 1 AVoltage - Forward (Vf) (Max) @ If: 0.53 V @ 1 ACurrent - Reverse Leakage @ Vr: 20 µA @ 15 V

SM5819PL-TP is a 1A, 40V Schottky diode in a SOD-123FL package, ideal for rectification and freewheeling. Alternatives exist but require careful review of forward voltage and reverse leakage.

AI replacement insight

Electrical riskmedium

Candidates have different Vf and Ir, impacting efficiency and standby power.

Package risklow

All viable candidates use the same SOD-123FL package.

Sourcing risklow

Multiple manufacturers produce similar diodes in this package.

Can it be replaced directly?

Direct replacement for SM5819PL-TP should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

SS24FL offers a similar profile but requires checking reverse leakage. DSS310 is a robust upgrade if higher forward voltage is acceptable.

Main risk

The primary risk is increased power loss from higher forward voltage (Vf) or circuit malfunction from higher reverse leakage current (Ir).

Recommended alternatives

2
SS24FL package
SS24FL

Kexin

Needs validationmedium risk

A pin-compatible Schottky diode with higher current rating, but review higher reverse leakage and lack of voltage margin.

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Alternative comparison matrix

Feature / factorSM5819PL-TPSS24FLDSS310Alt 3Compatibility / risk
PackageSOD-123FLSOD-123FLSOD-123FLSOD-123FL — Package matches target.; DSS310: Package matches target.
Voltage40V40V100V40V / 100V — Matches target, but no safety margin.; DSS310: Higher voltage rating provides margin.
Current1A2A3A2A / 3A — Higher current capability.; DSS310: Higher current capability.
Forward Voltage0.53V @ 1A0.55V @ 2A0.85V @ 3A0.55V @ 2A / 0.85V @ 3A — Comparable Vf, likely lower at 1A.; DSS310: Higher Vf will increase power loss.
Reverse Leakage20µA @ 15V500µA @ 40V-500µA @ 40V — Significantly higher leakage current.

Application & sourcing insights

Questions & answers

Verified drop-in options for SM5819PL-TP 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.