IRFZ34N N-MOSFET 55V 26A

The IRFZ34N is a widely used N-channel power MOSFET designed for high-current, medium-voltage switching applications . Built into the rugged TO-220 through-hole package , this MOSFET delivers reliable performance and is easy to mount on standard heatsinks for sustained operation under heavy loads. With a drain-source voltage rating of 55V and a continuous drain current capability of 26A , the IRFZ34N is well suited for driving high-current loads such as DC motors, solenoids, lamps, heaters, and high-power LEDs . Its very low on-resistance of just 0.04? (40 m?) minimizes conduction losses, allowing the transistor to deliver high efficiency with minimal heat generation — a key advantage in PWM motor control and switching converters . The IRFZ34N features fast switching characteristics with a typical reverse recovery time (Trr) of 57ns , making it suitable for high-frequency PWM applications, switch-mode power supplies (SMPS), and DC-DC converters . Its wide operating junction temperature range of ?55°C to +175°C ensures reliable performance across demanding thermal environments, including automotive and industrial applications. Note on gate drive: The IRFZ34N is not a true logic-level MOSFET — although it begins to conduct around 4V, it typically requires a gate-source voltage of around 10V for full enhancement and lowest on-resistance. For switching from a 3.3V or 5V Arduino, consider using a dedicated MOSFET gate driver or its logic-level cousin, the IRLZ34N , which is specifically designed to switch fully from 5V logic. Specifications Transistor Type: N-Channel Power MOSFET Drain-Source Voltage (V_DSS) Max: 55V Continuous Drain Current (I_D) Max: 26A On-Resistance (R_DS(on)) Typical: 0.04? (40 m?) Gate-Source Voltage (V_GSS) Max: ±20V Power Dissipation (P_tot): 56W Reverse Recovery Time (T_rr) Typical: 57 ns Operating Junction Temperature (T_j): ?55°C to +175°C Storage Temperature (T_stg): ?55°C to +175°C Package / Case: TO-220 Mounting Type: Through-hole Pin Count: 3 (Gate, Drain, Source) Pin Configuration (TO-220) Pin 1: Gate (G) Pin 2: Drain (D) Pin 3: Source (S) Applications DC motor control and H-bridge driver circuits PWM speed control for motors, fans, and pumps Switch-mode power supplies (SMPS) and DC-DC converters Battery charger and power management circuits Solar charge controllers and renewable energy systems High-current LED and lamp drivers Solenoid and relay drivers Inverter and converter circuits Audio amplifier output stages (Class-D) Automotive electronics and switching applications Industrial control and automation systems Robotics and high-current actuator control Welding equipment and power tools Arduino, Raspberry Pi, ESP32 projects (with appropriate gate driver)