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Best Alternatives to S2MA

Package: SMA(DO-214AC)FUXINSEMIDiodes - Rectifiers - SingleDiode Type: StandardVoltage - DC Reverse (Vr) (Max): 1000 VCurrent - Average Rectified (Io): 2 AVoltage - Forward (Vf) (Max) @ If: 1.1 V @ 2 ACurrent - Reverse Leakage @ Vr: 5 µA @ 1000 V

S2MA is a 2A, 1000V standard rectifier in an SMA package. When searching for a replacement, prioritize matching voltage, current, and package, while also considering the diode type and forward voltage.

AI replacement insight

Package riskmedium

Common industry confusion between SMA and SMB packages requires careful footprint verification.

Electrical riskmedium

Ensure replacement is not a fast or Schottky type and that forward voltage (Vf) is not excessively high.

Sourcing risklow

This is a common diode specification with many potential suppliers.

Can it be replaced directly?

Direct replacement for S2MA should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

MRA4007T3G-FS is the most promising path, sharing key specs and manufacturer, suggesting it may be an intended cross.

Main risk

The main risk is substituting with a part that has a different package (e.g., SMB instead of SMA) or a significantly higher forward voltage, which would increase power dissipation.

Recommended alternatives

2
MRA4007T3G-FS package
MRA4007T3G-FS

FUXINSEMI

Needs validationlow risk

A general-purpose rectifier with matching voltage, current, and SMA package. A strong candidate for S2MA.

View details

Alternative comparison matrix

Feature / factorS2MAMRA4007T3G-FSUS2MAlt 3Compatibility / risk
PackageSMA(DO-214AC)SMA/DO-214ACSMA (DO-214AC) / SMB (DO-214AA)SMA/DO-214AC / SMA (DO-214AC) / SMB (DO-214AA) — Package matches the target's form factor.; US2M: Conflicting data; some sources indicate a larger SMB package.
Voltage1.1V1.18V~1.7V @ 2A1.18V / ~1.7V @ 2A — Slightly higher forward voltage may minimally increase power loss.; US2M: Significantly higher forward voltage will increase power dissipation.
Current2.0A2.0A2.0A2.0A — Forward current rating is identical.; US2M: Forward current rating matches the target.
ApplicationStandardGeneral PurposeFast / Ultra-FastGeneral Purpose / Fast / Ultra-Fast — Diode type matches the target.; US2M: Candidate is a fast recovery diode, target is standard. May affect switching behavior.

Application & sourcing insights

Questions & answers

Verified drop-in options for S2MA 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.