Build with AO3401A — Datasheet Specs & AI Design Help

00 — Overview

What the AO3401A does

The AO3401A is a 30V P-Channel MOSFET in the SOT23 package, designed for load switching and general applications. It features a 30V drain-source breakdown voltage, 4A continuous drain current, and on-resistance below 85mW at -2.5V gate drive. The device operates with gate voltages as low as 2.5V and supports junction temperatures from -55°C to 150°C. Its low gate charge and advanced trench technology enable efficient operation in commercial, industrial, and military temperature ranges.

Next step

Start building with AO3401A → Every number above is cited straight from the datasheet — ask what they mean for your design, and the assistant answers from the same source documents.

01 — Key specifications

Datasheet parameters

Datasheet parameters for AO3401A
Parameter	Min	Typ	Max	Conditions	Source
rds on	—	4.16 Ohm	5.08 Ohm	VGS = -10V, ID = -4.0ATJ = 125°C; rds(on); STATIC PARAMETERS	Alpha & Omega Semiconductor datasheet, p. 2 — Product Summary
operating temperature	-55 °C	—	150 °C	Junction and Storage Temperature Range	Alpha & Omega Semiconductor datasheet, p. 1 — Product Summary
power dissipation	—	—	1.4 W	TA = 25°C; Product Summary	Alpha & Omega Semiconductor datasheet, p. 1 — Product Summary
breakdown voltage ds	-30 V	—	—	ID = -250µA, VGS = 0V; STATIC PARAMETERS	Alpha & Omega Semiconductor datasheet, p. 2 — Product Summary
drain current	—	—	-4 A	TA = 25°C; continuous; Product Summary	Alpha & Omega Semiconductor datasheet, p. 1 — Product Summary
vgs threshold	-1.3 V	—	-500 mV	VDS = VGS, ID = -250 µA	Alpha & Omega Semiconductor datasheet, p. 2 — Product Summary
input capacitance	—	645 pF	—	VGS = 0V, VDS = -15V, f = 1MHz; ciss; DYNAMIC PARAMETERS	Alpha & Omega Semiconductor datasheet, p. 2 — Product Summary
output capacitance	—	80 pF	—	VGS = 0V, VDS = -15V, f = 1MHz; coss; DYNAMIC PARAMETERS	Alpha & Omega Semiconductor datasheet, p. 2 — Product Summary
reverse transfer capacitance	—	55 pF	—	VGS = 0V, VDS = -15V, f = 1MHz; crss; DYNAMIC PARAMETERS	Alpha & Omega Semiconductor datasheet, p. 2 — Product Summary
gate charge	—	14 nC	—	VGS = -10V, VDS = -15V, ID = -4.0A; qg(10v); SWITCHING PARAMETERS	Alpha & Omega Semiconductor datasheet, p. 2 — Product Summary
rise time	—	3.5 ns	—	VGS = -10V, VDS = -15V, RL = 3.75Ω, RGEN = 3Ω; tr; SWITCHING PARAMETERS	Alpha & Omega Semiconductor datasheet, p. 2 — Product Summary
fall time	—	9 ns	—	VGS = -10V, VDS = -15V, RL = 3.75Ω, RGEN = 3Ω; tf; SWITCHING PARAMETERS	Alpha & Omega Semiconductor datasheet, p. 2 — Product Summary
emitter base voltage	—	-700 mV	—	Body-Diode Forward Voltage, IS = -1A, VGS = 0V	Alpha & Omega Semiconductor datasheet, p. 2 — Product Summary

02 — Alternatives

Closest matches to AO3401A

MDD3401 1.6× lower gate charge, 1.2× lower output capacitance, 1.2× higher fall time

AO3407A 7.5× higher drain current, 2.2× higher vgs threshold, 2.0× higher reverse recovery time

HL2301A 10.0× higher rise time, 2.5× lower gate charge, 2.5× higher drain current

Si2301CDS 10.0× higher rise time, 2.7× higher reverse recovery time, 2.5× lower gate charge

DMP3099L 2.8× higher drain current, 2.7× lower gate charge, 1.7× higher vgs threshold

HL3415A 5.8× higher drain current, 3.3× higher fall time, 2.9× higher rise time

HL6042 7.5× higher drain current, 3.2× higher fall time, 2.6× higher rise time

PMV65XPEA 5.4× higher rise time, 2.9× lower power dissipation, 2.8× lower gate charge

03 — FAQ

Frequently asked questions

What is the breakdown voltage (ds) for the AO3401A?

The breakdown voltage (ds) is -30 V when ID = -250µA and VGS = 0V under STATIC PARAMETERS.

What is the continuous drain current at TA = 25°C?

The continuous drain current at TA = 25°C is -4 A.

What is the emitter base voltage?

The emitter base voltage is -700 mV at Body-Diode Forward Voltage, IS = -1A, VGS = 0V.

What is the fall time (tf) under the conditions VGS = -10V, VDS = -15V, RL = 3.75Ω, and RGEN = 3Ω?

The fall time is 9 ns.

What is the gate charge (qg) under switching parameters with VGS = -10V, VDS = -15V, and ID = -4.0A?

The gate charge is 14 nC.

What is the input capacitance (Ciss) of the AO3401A?

The input capacitance is 645 pF when VGS = 0V, VDS = -15V, and f = 1MHz.

What is the operating temperature for the AO3401A?

The Junction and Storage Temperature Range is 150 °C.

What is the output capacitance (coss) of the AO3401A?

The output capacitance is 80 pF at VGS = 0V, VDS = -15V, and f = 1MHz.

What is the power dissipation of the AO3401A at TA = 25°C?

The power dissipation is 1.4 W.

What is the rds(on) value when VGS = -10V, ID = -4.0A, and TJ = 125°C?

The rds(on) is 4.16 Ohm.

What is the reverse transfer capacitance (crss) of the AO3401A?

The reverse transfer capacitance is 55 pF at VGS = 0V, VDS = -15V, and f = 1MHz.

What is the rise time (tr) of the AO3401A when VGS = -10V, VDS = -15V, RL = 3.75Ω, and RGEN = 3Ω?

The rise time is 3.5 ns.