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Best Alternatives to SS320A

Package: SMA (DO-214AC)FUXINSEMIDiodesMaximum Repetitive Peak Reverse Voltage (VRRM): 200 VMaximum Average Forward Rectified Current (IF(AV)): 3.0 AMaximum Instantaneous Forward Voltage (VF) @ 3.0A: 0.95 VMaximum DC Reverse Current (IR) @ TA=100°C: 2.0 mAPeak Forward Surge Current (IFSM): 80.0 A

Find suitable replacements for the SS320A, a 200V 3A Schottky rectifier in an SMA package. This guide provides verified alternatives and engineering analysis for a safe substitution.

AI replacement insight

Electrical riskmedium

Must match diode type (Schottky) and ensure forward voltage (Vf) does not increase power loss.

Package risklow

SMA (DO-214AC) is a standard package with excellent cross-compatibility.

Firmware risklow

Not applicable for a simple discrete diode.

Can it be replaced directly?

Direct replacement for SS320A should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

The most straightforward path is using an SS320 from a reputable manufacturer, which appears to be a direct cross. For more design margin, the SS5200 is an excellent upgrade.

Main risk

The primary risk is substituting with a non-Schottky diode or one with a lower voltage rating (less than 200V), which could lead to device failure.

Recommended alternatives

2
SS320 package
SS320

Taiwan Semiconductor Corporation

Needs validationlow risk

SS320 is a 200V, 3A Schottky diode in the same SMA package, appearing to be a direct cross-vendor alternative to the SS320A.

View details

Alternative comparison matrix

Feature / factorSS320ASS320SS5200Alt 3Compatibility / risk
PackageSMA (DO-214AC)DO-214AC (SMA)SMA (DO-214AC)DO-214AC (SMA) / SMA (DO-214AC) — Package is form and fit compatible.; SS5200: Package is form and fit compatible.
Voltage200V200V200V200V — Reverse voltage rating meets requirement.; SS5200: Reverse voltage rating meets requirement.
Current3.0A3.0A5.0A3.0A / 5.0A — Forward current rating is identical.; SS5200: Higher current rating provides more design margin.
Forward Voltage0.95V0.92V0.85V @ 5A0.92V / 0.85V @ 5A — Slightly lower forward voltage indicates better or equal efficiency.; SS5200: Lower forward voltage, indicating higher efficiency. Value is at a higher current.
Surge Current80A-120A120A — Higher surge capability increases robustness.

Application & sourcing insights

Questions & answers

Verified drop-in options for SS320A 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.