IRFZ44N Mosfet Datasheet Full Details || Download PDF Free

A MOSFET is a kind of transistor that has switching and amplification capabilities. Source, Gate, and Drain are the three terminals on a transistor. The gate regulates the current flow between the source and drain, which are connected to the primary current channel.

The IRFZ44N can switch negative voltages because it is an N-channel MOSFET. It can handle a lot of power because of its high drain current of 49 A. When fully turned on, it also has a low source-to-drain resistance of 17.5 mOhm, which means less energy is lost as heat. In addition, it features a low threshold voltage of 4 volts, making it simple to turn on from a low-voltage source.


Popular N-channel power MOSFETs like the IRFZ44N are frequently employed in a variety of electronic circuits. An electronic signal switch or amplifier is a transistor type known as a MOSFET or Metal-Oxide-Semiconductor Field-Effect Transistor. Because of its high current handling capacity, low resistance, and robustness, the IRFZ44N is well-suited for a variety of applications.

IRFZ44N MOSFET Specifications

The IRFZ44N MOSFET comes with the following specifications:

  • Drain-Source Voltage (VDS): 55V
  • Continuous Drain Current (ID): 49A
  • Power Dissipation (PD): 94W
  • Gate-Source Voltage (VGS): 20 V
  • Total Gate Charge (QG): 47nC
  • Input Capacitance (CI SS): 1700 pF
  • Output Capacitance (CO SS): 410 pF
  • Reverse Transfer Capacitance (CRSS): 330 pF


The IRFZ44N MOSFET has a number of noteworthy characteristics, including:

  • High Drain Current Capability: The IRFZ44N can successfully handle high-current applications thanks to its maximum continuous drain current of 49 A.
  • Low On-Resistance: The MOSFET has a low on-resistance, which lowers power losses and increases switching application efficiency.
  • Rapid response to control signals is made possible by the IRFZ44N’s high switching speed.
  • It is avalanche-rated, which qualifies it for applications requiring dependable performance under high-voltage circumstances.
  • low gate drive specifications The IR

The low gate drive requirements of the FZ44N ensure compatibility with a variety of control circuits.


The IRFZ44N MOSFET’s wiring diagram is as follows:

The Drain (D), Source (S), and Gate terminals are the device’s three major terminals (G). For the MOSFET to operate correctly in any given circuit, these terminals must be connected properly.

IRFZ44N MOSFET Electrical Characteristics

The IRFZ44N MOSFET demonstrates a number of electrical traits that describe its performance and behavior. The following are some essential electrical traits:

  • Gate Threshold Voltage (VGS(TH)): 2V–4V
  • Drain-Source Breakdown Voltage (VBRS): 55 V (minimum)
  • Drain-Source On-Resistance (RDS(ON)): 17 m Ω (maximum)
  • Forward Transconductance (GFS): 20 S (minimum)
  • Total Gate Charge (QG): 47nC (maximum)
  • Gate-Source Charge (QGS): 9.6nC (typical)


In conclusion, the IRFZ44N MOS FET is an N-channel power MOS FET that is flexible and dependable and is widely employed in a variety of electronic applications. It is a great option for motor control, power supplies, LED lighting, audio amplifiers, and automotive electronics due to its high current-handling capacity, low on-resistance, and resilience. You may use the IRFZ44N efficiently in your electronic designs by being aware of its characteristics, features, and applications.


What is the maximum voltage the IRFZ44N can handle?

The maximum drain-source voltage (VDS) that the IRFZ44N MOSFET can withstand is 55V.

Can the IRFZ44N be used for high-current applications?

Yes, with a maximum continuous drain current (ID) of 49A, the IRFZ44N is built to withstand heavy currents.

Is the IRFZ44N suitable for automotive applications?

Yes, the IRFZ44N is highly suited for automotive electronic systems, including motor control and automotive lighting modules, thanks to its robustness and excellent current-handling capacity.

What is the on-resistance of the IRFZ44N?

The IRFZ44N’s drain-source on-resistance (RDS(ON)) is generally 17 m. (milliohms).

Can I use the IRFZ44N in audio amplifier circuits?

Indeed, the IRF44N can produce high output power when employed in audio amplifier circuits.

Where can I buy the IRFZ44N MOSFET?

Electronic component vendors and online markets provide the IRFZ44N MOS FET extensively. To get them, you can look on reliable websites or go to your neighborhood electronics store.