New 10pcs 55V 49A IRFZ44N IRFZ44 Power Transistor MOSFET N-Channel

IRFZ44N / IRFZ44 N-Channel Power MOSFET — 55V / 49A / 17.5mΩ, TO-220, 10 Pieces

The IRFZ44N is a high-performance N-channel power MOSFET in TO-220 package, rated at 55V and 49A continuous drain current with an on-resistance of just 17.5mΩ at Vgs=10V. Its gate threshold voltage of 2–4V makes it one of the most accessible power MOSFETs for microcontroller-driven circuits — it begins to turn on at logic-level voltages, making it popular for Arduino, ESP32, and Raspberry Pi PWM control applications.

10 pieces per pack. New original parts.

Specifications

• Part Number: IRFZ44N / IRFZ44NPBF / IRFZ44
• Channel Type: N-Channel
• Package: TO-220 (through-hole)
• Drain-Source Voltage (Vds): 55V
• Continuous Drain Current (Id): 49A @ 25°C
• On-Resistance Rds(on): 17.5mΩ @ Vgs=10V
• Gate Threshold Voltage (Vgs(th)): 2V – 4V
• Power Dissipation (Pd): 94W
• Operating Temperature: −55°C to +175°C
• Quantity: 10 pieces

TO-220 Pinout

• Pin 1 (left): Gate (G)
• Pin 2 (center): Drain (D)
• Pin 3 (right): Source (S)
• Tab: Drain (D)

Arduino PWM Motor Control (Basic Wiring)

• Gate → Arduino PWM pin (D3/D5/D6/D9/D10/D11) via 100Ω resistor
• Drain → Motor negative terminal (or load negative)
• Source → GND
• Motor positive → 12V supply
• Add 1N4007 flyback diode across motor (cathode to 12V, anode to Drain)
• Add 10kΩ pull-down from Gate to Source to prevent floating gate
• Control speed: analogWrite(pin, 0–255);

Typical Applications

• Arduino/ESP32 PWM DC motor speed control
• 12V/24V LED strip PWM dimmer
• Solenoid valve and relay coil driver
• Low-side load switch for 12V–48V circuits
• Buck converter low-side switch
• Battery discharge switch in BMS
• Electronic load (constant current sink)
• H-bridge motor driver (low-side N-channel)

Package Contents

• 10 × IRFZ44N / IRFZ44 TO-220 N-channel power MOSFET

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