The AO3400A is a high-performance N-channel enhancement-mode power MOSFET manufactured by Alpha & Omega Semiconductor (AOS). Featuring a drain-source voltage rating of 30V, a continuous drain current rating of 5.7A at 25°C, and a maximum on-resistance of just 26.5mΩ at VGS = 10V, this transistor provides efficient switching performance for a wide range of electronic applications.
Designed using advanced trench MOSFET technology, the AO3400A combines low on-resistance, compact packaging, and fast switching characteristics to help reduce conduction losses and improve power efficiency.
Housed in a compact SOT-23 (SOT-23-3) surface-mount package, the device supports high-density PCB layouts and automated SMT assembly. Its low gate charge and specified on-resistance at gate drive voltages of 4.5V and 2.5V make it suitable for low-voltage switching applications.
The AO3400A supports load switching, PWM control, power management, and general-purpose electronic switching circuits. With a maximum junction temperature of 150°C, it offers dependable performance when operated within its electrical and thermal ratings.
Key Features:
- Manufacturer: Alpha & Omega Semiconductor (AOS)
- Part Number: AO3400A
- Product Category: Discrete Semiconductors
- Product Type: N-Channel Power MOSFET
- MOSFET Configuration: Single N-Channel
- Drain-Source Voltage (VDS): 30V
- Continuous Drain Current (ID): 5.7A at 25°C
- Continuous Drain Current at 70°C: 4.7A
- Pulsed Drain Current: 30A (Under Specified Conditions)
- Maximum On-Resistance: 26.5mΩ at VGS = 10V
- Maximum On-Resistance: 32mΩ at VGS = 4.5V
- Maximum On-Resistance: 48mΩ at VGS = 2.5V
- Gate-Source Voltage (VGS): ±12V Maximum
- Gate Threshold Voltage: 0.65V to 1.45V
- Typical Total Gate Charge: 6nC at VGS = 4.5V
- Power Dissipation: 1.4W at 25°C (Specified Thermal Conditions)
- Junction Temperature Range: -55°C to +150°C
- Package: SOT-23 / SOT-23-3
- Number of Pins: 3
- Mounting Type: Surface Mount (SMD/SMT)
- Packaging: Tape and Reel
- Standard Reel Quantity: 3,000 Pieces
Typical Applications:
- DC load switching circuits
- PWM switching applications
- Power management systems
- LED switching and control circuits
- Battery-powered electronic devices
- Motor control circuits
- Consumer electronic equipment
- Embedded electronic systems
The AOS AO3400A combines low RDS(on), compact SOT-23 packaging, and efficient N-channel MOSFET technology to provide a practical switching solution for modern electronic systems.
Its 30V voltage rating, 5.7A current capability, and low gate charge make it a suitable choice for electronic manufacturers, design engineers, and component procurement professionals seeking reliable and space-efficient MOSFET solutions.



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