1N5819WS
ZHIDE
Needs validationlow risk
A common upgrade with a higher voltage rating (40V). It shares the same package and current rating.
Best Alternatives to 1N5817WS
1N5817WS is a popular 20V, 1A Schottky diode in a compact SOD-323 package, used for high-frequency rectification and protection. When seeking a substitute, focus on matching the Schottky type, current rating, and low forward voltage.
AI replacement insight
Electrical riskmedium
Higher forward voltage in alternatives can increase power loss and affect thermal performance.
Package risklow
SOD-323 is a standard package with many pin-compatible options.
Sourcing risklow
This is a high-volume part with numerous cross-vendor alternatives available.
Can it be replaced directly?
Yes, the 1N5819WS is a common upgrade path for the 1N5817WS, offering a higher voltage rating in the same package. However, its slightly higher forward voltage should be considered.
Best replacement path
The most direct upgrade is the 1N5819WS, which is the 40V version in the same family.
Main risk
The primary risk when substituting is an increased forward voltage (Vf), which leads to higher power dissipation and heat.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | 1N5817WS | 1N5819WS | B5819WS | B16WS | Compatibility / risk |
|---|---|---|---|---|---|
| Diode Type | Schottky | Schottky | - | - | Schottky — Diode type matches target. |
| Package | SOD-323 | SOD-323 | - | - | SOD-323 — Package is identical. |
| Voltage | 20V | 40V | - | - | 40V-60V — Higher voltage rating provides more margin. |
| Current | 1.0A | 1.0A | - | - | 1.0A — Current rating is identical. |
| Forward Voltage | 0.45V @ 1A | ~0.6V @ 1A | - | - | ~0.6V @ 1A — Slightly higher Vf may increase power dissipation. |
Application & sourcing insights
Questions & answers
The 1N5819WS is widely considered the best alternative. It's an upgrade to 40V in the same product series and SOD-323 package, with similar performance.