Introduction
The IRFP240 is a robust and highly efficient N-channel power MOSFET designed for high-power, high-speed switching applications. With a maximum drain-source voltage of 200V and a continuous drain current of 20A, it is an excellent choice for circuits requiring the management of significant power levels. Its low on-resistance of just 0.18Ω minimizes power loss during operation, thereby reducing heat generation and enhancing overall system efficiency. The TO-247 package provides superior thermal performance, allowing the device to handle higher power dissipation and ensuring reliable operation in demanding environments. This makes the IRFP240 a popular choice among both professionals and hobbyists for a wide variety of power electronics projects.

The IRFP240’s fast switching speeds and high input impedance are key features that make it a cornerstone component in many applications. It is widely used in motor control circuits, where it provides precise and efficient control of DC motors, and in switching power supplies and DC-DC converters to regulate voltage and manage power flow with minimal loss. Its ability to handle high currents and voltages also makes it suitable for use in inverter circuits, which are essential for converting DC power from sources like solar panels and batteries into AC power.
IRFP240 Power MOSFET (200V 20A N-Channel)

Furthermore, the IRFP240 is known for its ruggedness, with a dynamic dV/dt rating and repetitive avalanche rating that ensure reliable performance even under stressful conditions. Its simple drive requirements and ease of paralleling make it straightforward to integrate into complex circuits, allowing for scalable designs to meet higher power demands. The IRFP240’s balance of high performance, durability, and cost-effectiveness has solidified its position as a go-to component for applications such as audio amplifiers and high-energy pulse circuits, where efficiency and stability are paramount.
IRFP240 Pinout

IRFP240 Power MOSFET Key Features
he IRFP240 is a highly popular and robust N-channel power MOSFET, valued for its performance in high-power applications. Its key features are:
High Power and Voltage Ratings
The IRFP240 is designed to handle significant power. It has a high drain-source voltage (VDS) of 200V and a continuous drain current (ID) of 20A. This makes it suitable for managing substantial loads and handling higher voltages, which is crucial in applications like motor control and power supplies.
Low On-Resistance
One of its most important features is its low on-resistance (RDS(on)), typically 0.18Ω. This characteristic minimizes power loss and heat generation when the MOSFET is in its “on” state (conducting current). A lower on-resistance directly translates to a more efficient and cooler-running circuit, improving overall system reliability.
Fast Switching Speed
The IRFP240 is built for fast switching. Its low gate charge and optimized design allow it to turn on and off rapidly, with switching times measured in nanoseconds. This is essential for high-frequency applications like switching power supplies and DC-DC converters, where rapid transitions are necessary to maintain efficiency and regulation.
Ruggedness and Reliability
This MOSFET is known for its durability. It has a dynamic dV/dt rating and is repetitive avalanche-rated, which means it can withstand the electrical stresses and energy pulses that occur in inductive switching circuits. This built-in ruggedness ensures stable and reliable performance even in harsh operating conditions.
Ease of Use and Paralleling
The IRFP240 has simple drive requirements and is easy to parallel. This makes it simple to use in circuits and allows for the paralleling of multiple MOSFETs to increase the overall current handling capacity for even higher power applications, without complex control circuitry. Sources
IRFP240 MOSFET Specifications/Characteristics
| Characterstics | Rating (Max) |
|---|---|
| Drain-Source Voltage (VDS): | 200 V |
| Continuous Drain Current (ID): | 20A @ 25 °C, 12 A @ 100 °C |
| Maximum Power Dissipation (PD): | 150W @ 25 °C |
| Gate-Source Voltage (VGS): | ±20 V |
| Pulsed Drain Current (IDM) | 80 A |
| Single Pulse Avalanche Energy (EAS) | 510 mJ |
| Peak Diode Recovery dV/dtc (dV/dt) | 5.0 Vns |
| Operating Junction & Storage Temperature Range (TJ, Tstg) | -55 to + 150 °C |
| Linear Derating Factor | 1.2 W/°C |
| Repetitive Avalanche Currenta (IAR) | 20 A |
| Repetitive Avalanche Energya (EAR) | 15 mJ |
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Key Applications of IRFP240 N-Channel Power MOSFET
The IRFP240’s unique combination of high voltage, high current, and fast switching capabilities makes it a popular component in various demanding electronic applications. Its robust design and low on-resistance ensure high efficiency and reliability. Some of its key applications include:
- Switching Power Supplies (SMPS) and DC-DC Converters: The IRFP240 is ideal for these applications due to its efficient switching performance and low power loss, which are critical for regulating and converting voltage levels with minimal energy waste.
- Motor Control Circuits: It is widely used in motor drivers and control systems, where its ability to handle high currents allows for precise and efficient control of electric motors in various industrial and consumer devices.
- Audio Amplifiers: The IRFP240 is a popular choice for high-power audio amplifier designs. Its linear transfer characteristics and ability to manage significant power levels result in clean, high-fidelity sound output, making it a favorite in DIY audio projects and professional equipment.
- Inverter Circuits: The MOSFET’s capability to handle high voltage and its fast switching speed make it a key component in inverter circuits, which are used to convert DC power from sources like batteries or solar panels into AC power for household or industrial use.
- High-Energy Pulse Circuits: With a high pulsed drain current rating, the IRFP240 is well-suited for applications that require managing rapid, high-current pulses, such as in solid-state relays and high-energy discharge circuits.
- High-Frequency Switching: The low gate charge and fast switching speeds of the IRFP240 make it a suitable choice for high-frequency applications, where efficiency and minimal switching losses are essential.
Equivalent MOSFETs of IRFP240
Several MOSFETs can be used as equivalents or substitutes for the IRFP240, though it’s important to cross-reference the datasheets to ensure they meet the specific needs of your application. An equivalent MOSFET should have similar or better ratings for key parameters like drain-source voltage (VDS), drain current (ID), and on-resistance (RDS(on)).
Here’s a list of some common equivalent MOSFETs:
- IRFP240A: A direct functional equivalent, sometimes a variation from a different manufacturer.
- FQA29N20: A 200V, 29A N-channel MOSFET from Fairchild, often cited as a compatible equivalent.
- STP20N20: An equivalent from STMicroelectronics with similar voltage and current ratings.
- IRFP250: A higher-current version from the same series, offering a 200V rating but with a higher drain current of 30A. It can be a suitable replacement for applications needing more current handling.
- IRFP260: Another higher-current version, providing a 200V rating with a much higher drain current of 50A, offering an upgrade in performance.
- BUK436W-200A: A power MOSFET from Philips that functions as a compatible equivalent.
- 2SK2382: A functional equivalent from Toshiba, designed for high-speed, high-voltage switching applications.
Datasheet of IRFP240 Power MOSFET (200V 20A N-channel)
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