The IRF740 is a high-voltage, high-current N-channel power MOSFET designed for switching and amplification applications. It is widely used in power supplies, motor controls, and other high-voltage circuits due to its efficient performance and reliable operation.
Key Features:
- N-channel enhancement mode MOSFET
- High voltage rating: 400V
- High current rating: 10A
- Low on-resistance for efficient switching
- Fast switching speed
- Rugged construction for high reliability
- Suitable for high-frequency applications
- Type: N-channel MOSFET
- Drain-Source Voltage (Vds): 400V
- Continuous Drain Current (Id): 10A
- Pulsed Drain Current (Id, Pulse): 40A
- Gate-Source Voltage (Vgs): ±20V
- Rds(on): 1.0Ω (maximum) at Vgs = 10V
- Total Gate Charge (Qg): 67nC (typical)
- Gate-Source Threshold Voltage (Vgs(th)): 2.0V - 4.0V
- Power Dissipation (Pd): 125W
- Operating Temperature Range: -55°C to +150°C
- Package Type: TO-220
- Switched-mode power supplies (SMPS)
- Motor control circuits
- Inverters and converters
- High-voltage DC-DC converters
- Load switches
- Lighting ballasts
- Audio amplifiers
- Connect the drain terminal to the high-voltage load.
- Connect the source terminal to the ground or low-side of the circuit.
- Apply a suitable gate voltage (Vgs) to control the switching operation.
- Use a gate resistor if needed to control the switching speed and reduce noise.
- Ensure proper heat sinking to manage power dissipation and avoid overheating.
- Handle the MOSFET carefully to avoid damage from electrostatic discharge (ESD).
- Verify the voltage and current ratings before use to ensure compatibility with your circuit.
- Ensure adequate cooling and heat dissipation to prevent thermal overload.