IRF740PBF Vishay MOSFET N-CH 400V 10A TO220AB


The IRF740PBF is an N-channel Power MOSFET manufactured by Infineon Technologies. Let's break down its configuration, function, and application field:



  • Type: N-channel Power MOSFET
  • Package: TO-220AB (Through-Hole, 3-pin package with a central tab)
  • Pinout: The specific pinout for the TO-220AB package is typically Gate, Drain, and Source. However, for the exact pin configuration, it is crucial to refer to the datasheet.

Function: The primary function of the IRF740PBF N-channel Power MOSFET is to switch and/or amplify electronic signals within a circuit. As a voltage-controlled switch, it effectively controls the current flow between the drain and source terminals in response to the voltage applied to the gate. When a suitable voltage is applied to the gate terminal, it allows a significant amount of current to flow between the drain and source, effectively turning the MOSFET "on". Conversely, when the gate voltage is reduced or removed, the current flow is interrupted, turning the MOSFET "off". This ability to control high levels of current makes it ideal for various power management applications.

Application Field:

  • Power Supplies: MOSFETs like the IRF740PBF play a crucial role in regulating power supplies. In switch-mode power supplies, they control the flow of power from input to output, influencing voltage and current levels with high precision.
  • Motor Control: Widely used in motor control circuits, especially in robotics, electric vehicles, and industrial automation, where they are integral to regulating the speed and direction of motor rotations.
  • Inverters and Converters: Employed in power inverters and DC-DC converter applications to efficiently regulate voltage and current levels, essential in industries such as renewable energy systems.
  • Audio Amplifiers: In audio amplification circuits, MOSFETs can provide gain and control over signals, contributing to improved audio performance.

In summary, the IRF740PBF N-channel Power MOSFET is a versatile component frequently used in power electronics, motor control, and various modern electronic systems that require efficient power management and high-speed switching capabilities.



The IRF740PBF is an N-channel Power MOSFET manufactured by Vishay. Here are the specifications for this component:

  • Manufacturer: Vishay
  • Part Number: IRF740PBF
  • Type: MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor)
  • Channel Type: N-Channel (N-CH)
  • Voltage Rating: 400V (indicating its maximum rated voltage)
  • Current Rating: 10A (indicating its maximum continuous drain current)
  • Package: TO-220AB (Through Hole, 3-pin package with a central tab)

Application Field:

Given its high voltage and current ratings, the IRF740PBF N-channel Power MOSFET is typically used in various power electronics, particularly in applications that require high voltage and high current switching. Some common application fields for a MOSFET with the specifications of the IRF740PBF may include:

  • Switch Mode Power Supplies: Used to efficiently regulate power and manage voltage in various power supply designs.

  • Motor Control: MOSFETs like the IRF740PBF are widely employed in motor control circuits, especially in applications where high-power motors need to be controlled with precision, such as in industrial automation, robotics, and electric vehicle systems.

  • Power Inverters and Converters: Suitable for use in DC-AC power inverters and DC-DC converter circuits to manage high voltage and power levels efficiently. They are particularly crucial in applications such as renewable energy systems, uninterruptible power supplies, and electric vehicles.

  • Electronic Ballasts: Found in fluorescent lamp ballast circuits to regulate the voltage and power supplied to the fluorescent lamps.

  • Audio Amplifiers: Often incorporated into audio amplification circuits to handle high power and provide control over signals, contributing to the performance of audio systems.

The IRF740PBF's high voltage and current ratings make it suitable for applications that demand robust and efficient power management and switching.