IRF3205 MOSFET Overview
The IRF3205 is an N-channel power MOSFET manufactured using advanced process technology, characterized by its extremely low on-resistance and fast switching speed. These features make the IRF3205 a commonly used electronic component for engineers in digital circuit design, widely applied in inverters, motor speed controllers, and motor drivers. As a HEXFET power field-effect transistor, the IRF3205 also possesses high current handling and voltage tolerance capabilities, enabling high power output with a maximum voltage rating of 400V.
If you are looking for a reliable switching element or need a power amplifier that can handle high currents and voltages, consider integrating the IRF3205 MOSFET into your power electronics projects.

IRF3205 3D Model
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IRF3205 Pinout
The IRF3205 has a total of 3 pins. The pin configuration, functions, and connection examples are as follows:
| Pin | Function | Connection Example |
|---|---|---|
| Pin 1 - Gate (G) | Control pin responsible for regulating the current between the source and drain channels. | Connect to the output of a control circuit (e.g., microcontroller or switch). Apply voltage to control the MOSFET's switching state. |
| Pin 2 - Drain (D) | Load connection terminal. Electron emission occurs at this terminal. | Connect to the load (such as a motor, lamp, etc.). |
| Pin 3 - Source (S) | Used to collect the emitted current from the drain, providing a current return path. | Connect to ground or positive power supply. |
IRF3205 MOSFET Datasheet
You can browse the detailed information for in-depth technical specifications. We have a quick reference datasheet here to help you understand more about IRF3205 MOSFET.
IRF3205 MOSFET Features
|
Feature |
Specification |
|
Operating Mode |
110A / 55V |
|
Continuous Drain Current (ID) |
110 A |
|
Drain-Source Voltage |
55 V |
|
Gate Threshold Voltage |
±20V |
|
Single Pulse Avalanche Energy |
288mJ |
|
Operating and Storage Temperature Range |
-55°C to 175°C |
|
Drain-Source Breakdown Voltage |
60V |
|
Diode Forward Voltage |
1.4V |
|
Reverse Recovery Time |
75ns |
|
Input Capacitance |
3400pF |
|
Output Capacitance |
430pF |
|
Reverse Transfer Capacitance |
145pF |
|
FET Polarity |
N-channel |
|
On Resistance(RDS(ON)) |
0.008 Ω |
- Continuous Drain Current (ID): The continuous drain current of the IRF3205 can reach up to 110A, which is the maximum current that the MOSFET can handle during continuous operation, making it suitable for high-power applications.
- On Resistance (RDS(ON)): The on-resistance of the IRF3205 is as low as 0.008 Ω (8.0 mΩ), which helps reduce power loss and improve efficiency.
- Drain-Source Voltage (V(BR)(DSS)): The drain-source breakdown voltage of the IRF3205 is 55V, and exceeding this voltage may lead to device damage.
IRF3205 MOSFET Equivalent/ Alternatives
When you need to replace or find a MOSFET with performance similar to the IRF3205 in a specific circuit or project, you can refer to MOSFETs such as IRF1405, IRF3708, IRFZ44N, IRF3703, IRFZ46N, IRF1407, IRFB3077, and IRFB4110. These are equivalents to the IRF3205 MOSFET and have similar electrical specifications.
- IRF1405: The IRF1405 offers stable performance and has specifications almost identical to the IRF3205. However, its maximum drain current is 80A, which is lower than that of the IRF3205, making it unsuitable for high-power applications.
- IRF3708: The IRF3708 has slightly different characteristics compared to the IRF3205, featuring higher drain current and lower on-resistance, making it suitable for high-efficiency applications.
- IRFZ44N: Like the IRF3205, the IRFZ44N is also a widely used N-channel MOSFET. Both have low costs and strong switching capabilities.
- IRF3703: The IRF3703 has similar electrical parameters to the IRF3205; however, its drain-source breakdown voltage is lower, making it unsuitable for high-voltage applications.
- IRFZ46N: The IRFZ46N has good performance and is suitable for various applications, making it a viable substitute for the IRF3205.
- IRF1407: The IRF1407 can handle higher drain currents and is a high-performance MOSFET suitable for various applications.
- IRFB3077: This MOSFET is suitable for high-speed switching applications, but its higher breakdown voltage may render it unnecessary for some low-voltage applications.
- IRFB4110: Known for its low on-resistance and high current handling capabilities, this MOSFET is suitable for high-power and high-frequency applications; however, it is more expensive than the IRF3205 MOSFET.
ALSO READ: IRFZ44N MOSFET Transistor to Handle Huge Amount of Current for You
Common MOSFET models
In addition to the equivalent models of the IRF3205, there are many commonly used MOSFET models in the market, such as IRF540, IRF470, and IRF840. These models are widely used in power management and motor control applications. Below are their main parameters:
| Model | Maximum Drain Current | Drain-Source Breakdown Voltage | On Resistance | Package Type | Application |
|---|---|---|---|---|---|
| IRF540 | 28A | 100V | 0.044Ω | TO-220 | Used in switch-mode power supplies and small motor drives |
| IRFZ44N | 50A | 60V | 0.025Ω | TO-220 | Suitable for power supplies, motor control systems, and LED drivers |
| IRF840 | 8A | 500V | 0.33Ω | TO-220 | High voltage switch-mode power supplies and inverters |
| IRF3708 | 120A | 30V | 4.0mΩ | TO-220 | Suitable for applications requiring high current handling |
IRF3205 MOSFET Advantages
- The working principle is based on the MOSFET structure, where the thick oxide layer of the gate allows it to withstand high input voltages.
- The IRF3205 can handle a maximum voltage of 55V and a maximum current of 110A, effectively controlling current and voltage to ensure the stability and safety of the circuit.
- Its on-resistance is very low, resulting in minimal power consumption when in the on state.
IRF3205 MOSFET Disadvantages
- The threshold voltage is relatively high, making it unsuitable for switching control in embedded controllers.
IRF3205 MOSFET Applications and Functions
- Circuit switching function: The IRF3205 is known for its excellent switching response speed and is often selected as a key switching component in electronic circuits. By changing the voltage applied to the gate, the MOSFETs can be quickly activated or deactivated to precisely manage the on-off and on-off states of the circuit.
- Power signal Enhancement: This MOSFET is designed to perform well when handling high-power signals, whether it is improving sound quality and volume in the audio field or providing a stable power output in motor control, the IRF3205 ensures signal strength and stability. Its high current and high voltage processing capabilities, combined with low on-resistance, allow for efficient energy conversion and minimal energy loss in a wide variety of power-demanding applications.
- Energy efficiency optimization and energy savings: IRF3205's low on-resistance (8mΩ) and fast switching speed (110ns rise time)
So that the energy consumption during operation is low. This characteristic is essential for improving the energy efficiency of the circuit and reducing energy consumption. In applications that require frequent switching, such as power management, motor control and signal processing, the IRF3205 reduces energy loss due to resistance and switching delays, resulting in efficient energy savings. - Circuit safety and protection: IRF3205 plays a vital role in circuit protection due to its excellent current and voltage carrying capacity. When an emergency situation such as overload or abnormal voltage occurs in a power electronics system, the problem circuit can be quickly interrupted by adjusting the switching state of the IRF3205, thereby protecting other components in the system from damage.
The IRF3205 is recognized as a powerful MOSFET, with its outstanding specifications and features making it suitable for various electronic devices that require high power, high efficiency, and fast switching capabilities. The price of the IRF3205 may vary depending on different manufacturers, so if you are interested in purchasing this component or need more information, feel free to reach out for inquiries at JAK!


