The AO3402 is a popular SMD N Channel enhancement mode MOSFET. It is designed for low voltage and high efficiency switching applications. The mosfet has RDS(ON), logic level gate drive and also comes in SOT-23 package. This MOSFET is used in DC-DC converters, load switches, battery protection circuits and microcontroller based circuits.
AO3402 MOSFET Overview
- Type: N-Channel MOSFET
- Manufacturer: Alpha & Omega Semiconductor
- Package: SOT-23
- Gate Drive: Logic level
The AO3402 MOSFET uses advanced trench MOSFET technology. So it can able to handle relatively high currents with minimal power loss even at low input gate voltages.
AO3402 Pinout
| Pin No | Pin Name |
|---|---|
| 1 | Gate (G) |
| 2 | Source (S) |
| 3 | Drain (D) |
Specifications
- Drain-Source Voltage (VDS): 30V
- Gate-Source Voltage (VGS): +/-12V
- Continuous Drain Current (ID): 4A (VGS= 10V)
- Pulsed Drain Current: 15A
- Power Dissipation: 1.4W
Features of AO3402
- Logic-level gate drive so it is ideal for 3.3V & 5V MCU.
- Low RDS(ON) for high efficiency.
- Fast switching speed
- Compact SOT-23 footprint.
- Low gate charge for PWM applications.
Equivalent MOSFETs for Replacement
| Equivalent MOSFET | Vds | Id |
|---|---|---|
| IRLML6344 | 30V | 5A |
| SI2302 | 20V | 2.8A |
| AO3400 | 30V | 5.7A |
| FDN337N | 30V | 2.5A |
| 2N7002 | 60V | 0.2A |
Applications
- DC-DC buck & boost converters.
- Load switching circuits.
- Battery powered devices.
- Motor and relay drivers.
- LED drivers.
- Power management circuits.
- Arduino / ESP32 / Raspberry Pi projects.
