GE AO3481 – 30V P-Channel MOSFET (SOT-23)

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Product Introduction

The AO3481 is a high-performance P-channel enhancement-mode MOSFET manufactured by Alpha & Omega Semiconductor (AOS). It utilizes advanced trench technology to deliver low on-resistance, low gate charge, and high current-carrying capability in a compact SOT-23 surface-mount package. Designed for efficient power management and switching applications, it is widely used in battery-powered devices, load switching, and voltage regulation circuits.

Technical Specifications

Manufacturer: Alpha & Omega Semiconductor (AOS)
Model: AO3481
Type: P-Channel Enhancement-Mode MOSFET
Package: SOT-23 (3-pin surface mount)
Drain-Source Voltage (Vdss): 30 V
Continuous Drain Current (Id): 4 A @ 25°C
Gate-Source Threshold Voltage (Vgs(th)): 1.3 V @ 250 µA
Drain-Source On-State Resistance (Rds(on)): 50 mΩ @ 4 A, 10 V
Maximum Gate-Source Voltage (Vgs): ±12 V
Power Dissipation (Pd): 1.4 W @ Ta = 25°C
Operating Temperature Range: -55°C to +150°C (junction temperature)
Input Capacitance (Ciss): 645 pF @ 15 V
Gate Charge (Qg): 14 nC @ 10 V
RoHS Compliance: Yes

Key Features

Low On-Resistance
- Ultra-low 50 mΩ Rds(on) minimizes conduction losses and improves power efficiency.
High Current Handling
- Supports up to 4 A continuous drain current for robust load driving capability.
Compact SOT-23 Package
- Small footprint enables space-saving designs in portable and densely packed electronics.
Low Gate Charge
- 14 nC gate charge allows for fast switching speeds and reduced driver power consumption.
Wide Operating Voltage
- 30 V Vdss accommodates a broad range of battery and supply voltage applications.
Enhanced Thermal Performance
- Optimized trench structure reduces thermal resistance, ensuring reliability under high-load conditions.

Application Scenarios

Battery-Powered Devices
- Smartphones, tablets, and wearable electronics for power distribution and load switching.
- Laptop battery management circuits for protection and voltage regulation.
Power Management Circuits
- DC-DC converters, buck/boost regulators, and load switches in industrial and consumer electronics.
- Battery protection modules for lithium-ion battery packs.
Consumer Electronics
- LED lighting drivers, motor control circuits, and audio power amplifiers.
- USB power switches and charging port protection circuits.
Industrial & Automotive
- Low-voltage motor control, solenoid drivers, and relay replacement circuits.
- Automotive accessory power management (e.g., infotainment, lighting control).