IRFI740G N-Channel 5.4A 400V Power MOSFET TO-220

IRFI740 N-Channel 5.4A 400V Power MOSFET is a high-speed, high-voltage switching transistor ideal for switching power supplies, motor drives, and other applications that require fast switching and efficient high-voltage handling. Packaged in a standard TO-220, it delivers reliable performance for demanding environments.

Key Features:

• High Voltage Tolerance: Can handle drain-to-source voltage up to 400V.
• Efficient Switching: Fast rise and fall times allow efficient operation at high frequencies.
• Low R_DS(on): Minimizes conduction losses and heat generation.
• TO-220 Package: Industry-standard case with heat sink tab for better thermal dissipation.
• Logic-Level Gate Drive: Operates with standard TTL or CMOS control logic.

Technical Specifications:

• Transistor Type: N-Channel MOSFET
• Drain-Source Voltage (V_DS): 400V
• Continuous Drain Current (I_D): 5.4A
• Gate Threshold Voltage (V_GS(th)): 2.0V – 4.0V
• R_DS(on): 0.85Ω max @ V_GS = 10V
• Total Gate Charge: 32nC typical
• Power Dissipation: 125W (with proper heatsinking)
• Package: TO-220AB

Mechanical Specifications:

• Package Type: TO-220AB (3-Pin)
• Mounting: Through-hole
• Lead Pitch: Standard 2.54mm (0.1 inch)
• Heatsink Option: Yes, compatible with TO-220 heatsinks

Pin Configuration (TO-220):

• Pin 1: Gate (G)
• Pin 2: Drain (D)
• Pin 3: Source (S)
• Tab: Connected to Drain

Schematic Diagram, Connection and Wiring:

• Connection: Gate connects to control signal, Drain to load, and Source to ground or return path.
• Gate Drive: Requires voltage >10V for full enhancement.
• Protection: Recommended to use gate resistor and zener diode for gate protection.

Datasheet and Documentation:

• IRFI740 Official Datasheet (PDF)

Applications:

• Switch-Mode Power Supplies (SMPS): Used in high-frequency, high-efficiency power converters.
• DC-DC Converters: Provides high voltage switching in power regulation circuits.
• Motor Drives: Efficient control of DC and stepper motors.
• UPS Systems: Part of inverter and rectifier stages.
• Lighting Ballasts: Used in high-voltage fluorescent and LED drivers.

Equivalent Models:

• IRF740: Standard version without isolated tab
• FQP7N40: Fairchild N-channel 7A 400V alternative
• STP9NK40Z: STMicroelectronics equivalent with similar ratings

Package Includes:

• 1 x IRFI740 N-Channel MOSFET TO-220