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AO3402

30V N-channel trench MOSFET, SOT-23, 4A, RDS(on) 52m ohm max @ 10V, Qg 10nC, 2.5V gate drive capable, -55C to +150C.

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Manufacturer Part：

AO3402

Package：

SOT-23 (2.9 x 1.6 x 1.25mm)

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Description

Product Overview

The AO3402 from Alpha & Omega Semiconductor is a 30 V N-channel enhancement-mode MOSFET in an SOT-23 package, manufactured using advanced trench technology. It offers 4 A drain current with 52 mΩ max RDS(on) at VGS = 10 V, and supports gate drive voltages as low as 2.5 V (85 mΩ max). With an extremely low gate charge of 10 nC and fast switching speeds (3.5 ns turn-on delay, 1.5 ns rise time), it is ideally suited for high-frequency PWM and load switch applications in portable electronics.

Key Specifications

VDS 30 V
ID 4 A @ 25 °C / 3.2 A @ 70 °C
RDS(on) 43 mΩ typ / 52 mΩ max @ VGS = 10 V
RDS(on) @ 4.5 V 47 mΩ typ / 65 mΩ max
RDS(on) @ 2.5 V 60 mΩ typ / 85 mΩ max
VGS(th) 0.5 V to 1.5 V
Qg 10 nC typ @ VGS = 10 V / 4.7 nC @ 4.5 V
Ciss 235 pF typ
Switching (tD(on)/tr/tD(off)/tf) 3.5 / 1.5 / 17.5 / 2.5 ns typ
Body Diode trr / Qrr 8.5 ns / 2.6 nC typ
PD 1.4 W @ 25 °C
Operating Temperature -55 °C to +150 °C
Package SOT-23 (2.9 x 1.6 x 1.25 mm)

Features

  • Advanced trench technology for low RDS(on) and low gate charge
  • Supports 2.5 V low-voltage gate drive for 3.3 V / 5 V logic direct drive
  • Ultra-fast switching: 1.5 ns rise time, 3.5 ns turn-on delay
  • Compact SOT-23 package with 1.4 W power dissipation
  • Low body diode reverse recovery: trr = 8.5 ns, Qrr = 2.6 nC

Applications

  • Load switches in portable electronics
  • PWM applications
  • Mobile phone / tablet power management
  • Battery protection circuits
  • DC-DC converters (low power)
  • Low-power motor drive

The AO3402 from Alpha and Omega Semiconductor is a 30V N-channel enhancement-mode MOSFET in SOT-23 package using advanced trench technology. It offers 4A drain current with 52m ohm max RDS(on) at 10V gate drive, and supports operation down to 2.5V VGS (85m ohm max). Extremely low gate charge of 10nC (at 10V) and fast switching (3.5ns turn-on delay, 1.5ns rise time) make it ideal for high-frequency PWM and load switch applications in portable electronics.

The AO3402 uses AOS advanced trench (vertical) gate MOSFET technology. Trench gate structures eliminate the JFET region present in planar MOSFETs, achieving higher cell density and lower RDS(on). When VGS exceeds the threshold (0.5-1.5V), the P-body inverts to form an N-type conduction channel from drain to source. The trench structure provides a very low specific on-resistance per unit area. Low gate charge (10nC @10V) minimizes drive power loss and switching time. The body diode formed by P-body and N-drift provides a freewheeling path with trr=8.5ns and Qrr=2.6nC.

Pin SOT-23 Function Description
1 Gate Gate Control; VGS(th) 0.5~1.5V; +/-12V max
2 Source Source Reference; 4A rated @ 25C
3 Drain Drain Power terminal; 30V breakdown
  • Load switches in portable electronics
  • PWM applications
  • Mobile phone / tablet power management
  • Battery protection circuits
  • DC-DC converters (low power)
  • Low-power motor drive
Model Type Notes
AO3402A Same family AOS improved version; mark A29T
AO3400 Functional equiv. AOS 30V/5.8A/28m ohm; higher current
SI2302 Functional equiv. Vishay 20V/2.2A; SOT-23
2N7002 Functional equiv. 60V/0.3A; lower current; SOT-23
BSS138 Functional equiv. 50V/0.22A; low VGS(th); SOT-23
AO3404 Functional equiv. AOS 30V/5.8A/25m ohm; higher current
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In stock:
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Cargo cycle: 3~7 Days
The minimum order is 1

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All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Shipping & Payment

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Service & Packaging

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

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