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Best Alternatives to B5818WS

Package: SC-76, SOD-323Yangjie TechnologyDiodes - Rectifiers - SingleSeries: -Package: Tape & Reel (TR)Voltage - DC Reverse (Vr) (Max): 30 VCurrent - Average Rectified (Io): 1AVoltage - Forward (Vf) (Max) @ If: 550 mV @ 1 A

B5818WS is a 30V, 1A Schottky diode in a compact SOD-323 package. Pin-compatible alternatives with similar or improved electrical ratings are available, but require datasheet verification for pinout and minor parametric differences.

AI replacement insight

Package risklow

Multiple candidates exist in the same SOD-323 package.

Electrical risklow

Key parameters are closely matched or improved. Vf variation is the main point to check.

Can it be replaced directly?

Direct replacement for B5818WS should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

B5819WS offers a direct upgrade path with a higher 40V voltage rating in the same SOD-323 package.

Main risk

The primary risk is a slight variation in forward voltage (Vf), which can impact efficiency and thermal performance.

Recommended alternatives

2
B5819WS package
B5819WS

GOODWORK

Needs validationlow risk

Pin-compatible Schottky diode with a higher voltage rating in the same package. Note the minor increase in forward voltage.

View details

Alternative comparison matrix

Feature / factorB5818WSB5819WSCUS10S30Alt 3Compatibility / risk
PackageSOD-323SOD-323SOD-323SOD-323 — Package matches, enabling drop-in potential.; CUS10S30: Package matches, enabling drop-in potential.
Voltage30V40V30V40V / 30V — Higher reverse voltage provides more design margin.; CUS10S30: Identical reverse voltage rating.
Current1A1A1A1A — Identical average rectified current.; CUS10S30: Identical average rectified current.
Forward Voltage550mV @ 1A0.58V - 0.6V @ 1A0.55V @ 1A0.58V - 0.6V @ 1A / 0.55V @ 1A — Slightly higher Vf may increase power loss.; CUS10S30: Forward voltage is identical to target.

Application & sourcing insights

Questions & answers

Verified drop-in options for B5818WS 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.