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Best Alternatives to B5817WS

Package: SC-76, SOD-323Yangjie TechnologyDiodes - Rectifiers - SingleSeries: -Package: Tape & Reel (TR)Voltage - DC Reverse (Vr) (Max): 20 VCurrent - Average Rectified (Io): 1AVoltage - Forward (Vf) (Max) @ If: 450 mV @ 1 A

B5817WS is a 20V, 1A Schottky diode in a compact SOD-323 package, ideal for low-voltage rectification and protection circuits. This guide reviews potential alternatives.

AI replacement insight

Package riskhigh

Most alternatives are in different packages (SMB, SMA) and require a PCB redesign.

Electrical riskmedium

Pin-compatible options may have higher forward voltage (Vf), affecting efficiency and thermals.

Can it be replaced directly?

Direct replacement for B5817WS should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

B5819WS offers a direct path due to its matching package, but requires checking the forward voltage.

Main risk

The primary risk is physical incompatibility (package mismatch) for most alternatives. For pin-compatible options, electrical differences like forward voltage are key.

Recommended alternatives

3
B5819WS package
B5819WS

Yenji Elec

Needs validationmedium risk

Pin-compatible alternative in the same SOD-323 package with a higher voltage rating (40V).

View details

Alternative comparison matrix

Feature / factorB5817WSB5819WSSS34BSS56BCompatibility / risk
PackageSOD-323SOD-323--DO-214AA (SMB) — Different package requires PCB redesign. Not a drop-in replacement.
Voltage20V40V--60V — Significantly higher voltage rating.
Current1A1A--5A — Significantly higher current rating.
Forward Voltage0.45V @ 1A~0.6V @ 1A--~0.6V @ 1A — Potentially higher Vf may increase power loss. Verify from datasheet.

Application & sourcing insights

Questions & answers

Verified drop-in options for B5817WS 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.