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Best Alternatives to SI2301A

Package: TO-236-3, SC-59, SOT-23-3UMWMOSFETs - SingleSeries: UMWPackage: Tape & Reel (TR); Cut Tape (CT); Digi-Reel®Technology: MOSFET (Metal Oxide)Drain to Source Voltage (Vdss): 20 VCurrent - Continuous Drain (Id) @ 25°C: 2.8A (Ta)

SI2301A is a -20V P-channel SOT-23 MOSFET. AO3413 is the closest listed active candidate, but pinout must be verified.

AI replacement insight

Electrical riskmedium

AO3413 has equal VDS and slightly weaker 2.5V RDS(on).

Package risklow

AO3413 uses SOT-23.

Firmware risklow

Discrete MOSFET; no firmware interface.

Sourcing riskmedium

Other candidates are obsolete, NRND, or wrong type.

Can it be replaced directly?

Direct replacement for SI2301A should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

Review AO3413 first, then verify pinout, VGS limits, and RDS(on) at the actual gate drive.

Main risk

Pinout evidence is missing for all candidates.

Recommended alternatives

1
AO3413 package
AO3413

Alpha & Omega Semiconductor Inc.

Needs validationmedium risk

AO3413 is a close active P-channel SOT-23 MOSFET candidate for SI2301A.

View details

Alternative comparison matrix

Feature / factorSI2301AAO3413Alt 2Alt 3Compatibility / risk
PackageSOT-23SOT-23SOT-23 — same package
Pinout3-pin3-pin3-pin — pin functions missing
Voltage-20 V-20 V-20 V — no 1.1x margin
Current-2.8 A-3 A-3 A — slightly higher ID
Power0.4 W1.4 W1.4 W — higher PD

Application & sourcing insights

Questions & answers

Verified drop-in options for SI2301A 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.