SS520
Yangjie Technology
Needs validationlow risk
A potential pin-compatible Schottky diode with a higher current rating (5A). Package footprint should be verified.
Best Alternatives to SS120
SS120 is a 1A, 200V Schottky diode in an SMA package, common in high-speed switching applications. This page reviews potential alternatives, highlighting key parametric and package differences to guide your selection.
AI replacement insight
Electrical riskmedium
High risk if using a non-Schottky diode; low risk if using a compatible Schottky like SS520.
Package risklow
SMA/DO-214AC is a standard package, but variations exist. Always verify footprint.
Sourcing risklow
Multiple manufacturers produce similar 200V/1A Schottky diodes in SMA packages.
Can it be replaced directly?
Direct replacement for SS120 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
The most direct path is SS520, which matches the core Schottky technology and critical ratings. It requires minimal verification.
Main risk
The main risk is substituting with a non-Schottky diode (e.g., Fast Recovery), which will alter circuit performance due to different forward voltage and recovery characteristics.
Recommended alternatives
1Alternative comparison matrix
| Feature / factor | SS120 | SS520 | ES1D | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Diode Type | Schottky | Schottky | Super Fast Recovery | Schottky / Super Fast Recovery — Technology matches target.; ES1D: Different diode technology may impact performance. | |
| Package | DO-214AC, SMA | DO-214AC (SMA/SMAG) | DO-214AC, SMA | DO-214AC (SMA/SMAG) / DO-214AC, SMA — Package code matches, but name variation (SMAG) requires footprint check.; ES1D: Package matches target. | |
| Voltage | 200.0V | 200.0V | 200.0V | 200.0V — Voltage rating matches.; ES1D: Voltage rating matches. | |
| Current | 1.0A | 5.0A | 1.0A | 5.0A / 1.0A — Higher current rating provides more margin.; ES1D: Current rating matches. | |
| Forward Voltage | 0.95V | - | ~0.95V | ~0.95V — Vf is similar, but recovery characteristics differ. |
Application & sourcing insights
Questions & answers
Verified drop-in options for SS120 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.