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Best Alternatives to 1N5819WS

Package: SOD-323ZHIDEDiscrete Semiconductor ProductsDiode Type: Schottky barrier diodeMaximum Recurrent Peak Reverse Voltage: 40 VMaximum DC Blocking Voltage: 40 VMaximum Average Forward Rectified Current: 1.0 APeak Forward Surge Current: 9 A (8.3 ms single half sine-wave)

1N5819WS is a popular 40V, 1A Schottky diode in a compact SOD-323 package, widely used for high-frequency rectification and protection circuits. Finding a suitable replacement involves matching its low forward voltage and package type.

AI replacement insight

Electrical riskhigh

Using a non-Schottky diode will significantly increase power loss and may cause circuit failure.

Package risklow

SOD-323 is a standard package with many compatible options.

Sourcing risklow

This is a common diode type with many cross-vendor alternatives available.

Can it be replaced directly?

Direct replacement for 1N5819WS should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

B5819WS is a direct cross-vendor alternative. For a voltage upgrade, consider B16WS.

Main risk

The primary risk is substituting with a non-Schottky diode (e.g., standard or fast recovery), which will have a much higher forward voltage and slower switching speed.

Recommended alternatives

3
B5819WS package
B5819WS

Yenji Elec

Needs validationlow risk

A cross-vendor Schottky diode with matching key parameters in the same SOD-323 package.

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Alternative comparison matrix

Feature / factor1N5819WSB5819WSB16WSB110WSCompatibility / risk
Diode TypeSchottkySchottky--Schottky — Functionally identical diode type.
PackageSOD-323SOD-323--SOD-323 — Same package ensures form-fit compatibility.
Voltage40V40V--60V — Higher voltage rating provides more safety margin.
Current1A1A--1A — Identical current handling capability.
Forward Voltage0.6V @ 1A0.6V @ 1A--0.7V @ 1A — Slightly higher Vf may reduce efficiency.

Application & sourcing insights

Questions & answers

Verified drop-in options for 1N5819WS 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.