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Best Alternatives to SS310B

Package: SMBMicrodiode Semiconductor (Shenzhen) Co., Ltd.RectifiersDiode Type: Schottky barrier rectifierMaximum Repetitive Peak Reverse Voltage: 100 VMaximum DC Blocking Voltage: 100 VMaximum Average Forward Current: 3.0 AMaximum Forward Voltage at 3 A: 0.85 V

SS310B is a 3A, 100V Schottky rectifier in a DO-214AA (SMB) package, used for high-efficiency rectification. Finding a substitute requires matching the Schottky characteristics, particularly the low forward voltage and reverse leakage.

AI replacement insight

Electrical riskmedium

Differences in forward voltage (Vf) and reverse leakage (Ir) can affect efficiency and performance.

Package risklow

The DO-214AA (SMB) package is standardized, ensuring mechanical compatibility.

Can it be replaced directly?

Direct replacement for SS310B should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

MBRS3200T3G-FS is a strong candidate with a higher voltage rating, but its reverse leakage must be evaluated for the specific application.

Main risk

The primary risk is substituting a non-Schottky diode, which would increase power loss and alter switching behavior.

Recommended alternatives

2
MBRS3200T3G-FS package
MBRS3200T3G-FS

FUXINSEMI

Needs validationmedium risk

Pin-compatible Schottky diode with a higher voltage rating but increased reverse leakage.

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Alternative comparison matrix

Feature / factorSS310BMBRS3200T3G-FSSS3200BAlt 3Compatibility / risk
PackageDO-214AA (SMB)DO-214AA (SMB)DO-214AA (SMB)DO-214AA (SMB) — Same package and pin count.; SS3200B: Same package and pin count.
Polarity Or TypeSchottkySchottkySchottkySchottky — Both are Schottky diodes.; SS3200B: Both are Schottky diodes.
Voltage100V200V200V200V — Higher voltage rating provides more margin.; SS3200B: Higher voltage rating provides more margin.
Current3A3A3A3A — Same average rectified current.; SS3200B: Same average rectified current.
Reverse Leakage0.3mA @ 100V1mA @ 200V-1mA @ 200V — Higher leakage may affect low-power designs.
Forward Voltage0.85V @ 3A-0.95V @ 3A0.95V @ 3A — Slightly higher Vf may increase power loss.

Application & sourcing insights

Questions & answers

Verified drop-in options for SS310B 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.