The model "FGH40N60SMD" is an N-channel Power MOSFET typically used in high-performance switching applications such as power supplies, motor control, and other systems requiring high voltage and current handling capabilities. It is manufactured by Fairchild Semiconductor, which was acquired by ON Semiconductor. Therefore, it is under the ON Semiconductor brand now.
This MOSFET is commonly used in SMD (Surface Mount Device) packages and typically comes in the TO-220 or TO-263 package. The packaging allows for easy soldering onto printed circuit boards (PCBs), and the specific pinout details are critical for proper operation in a circuit.
Package Type:
TO-263 (also referred to as D2PAK)Pin Function Specification:
Below is a detailed pin function description for the FGH40N60SMD MOSFET in the TO-263 package. The package generally consists of 3 pins, but we will explain them clearly and comprehensively:
Pin Number Pin Name Pin Function Description 1 Gate (G) Gate terminal The gate terminal controls the switching operation of the MOSFET. When voltage is applied to the gate, it creates an electric field that allows current to flow from the drain to the source. The voltage applied to the gate (relative to the source) controls whether the MOSFET is "on" or "off." 2 Drain (D) Drain terminal The drain terminal is where the current exits the MOSFET. In the case of an N-channel MOSFET like the FGH40N60SMD, the drain is usually connected to the load side of the circuit. 3 Source (S) Source terminal The source terminal is where the current enters the MOSFET. It is typically connected to the negative side of the power supply in N-channel MOSFETs .Circuit Principle Instructions:
Gate-Source Voltage (Vgs): The MOSFET is turned on when a positive voltage is applied to the gate relative to the source (for an N-channel device). The threshold voltage (Vgs(th)) is the minimum voltage required to turn the MOSFET on. For the FGH40N60SMD, the Vgs(th) is typically around 2–4V.
Drain-Source Voltage (Vds): The FGH40N60SMD is rated for a maximum drain-source voltage of 600V, meaning it can handle up to 600V across the drain and source without breaking down.
Drain Current (Id): The MOSFET can handle a drain current up to 40A (under specific conditions) and this rating is important for determining how much load the MOSFET can safely drive.
Thermal Considerations: This MOSFET is designed to dissipate heat effectively. Proper heatsinking or other thermal management strategies are crucial for reliable operation in high-power applications.
Frequently Asked Questions (FAQ) for FGH40N60SMD:
1. What is the maximum voltage rating of the FGH40N60SMD? The FGH40N60SMD can withstand a maximum voltage of 600V between the drain and source. 2. What is the maximum current rating for the FGH40N60SMD? The MOSFET can handle a maximum drain current of 40A under suitable thermal conditions. 3. What is the gate threshold voltage of the FGH40N60SMD? The gate threshold voltage (Vgs(th)) is typically between 2V and 4V for the FGH40N60SMD. 4. What is the packaging of the FGH40N60SMD? The FGH40N60SMD is available in a TO-263 (D2PAK) package. 5. How do I properly drive the gate of the FGH40N60SMD? You should apply a voltage higher than the threshold voltage (2–4V) between the gate and source to turn the MOSFET on. A typical driving voltage might be around 10V for full enhancement. 6. What is the on-resistance (Rds(on)) of the FGH40N60SMD? The on-resistance varies based on the operating conditions, but it is typically around 0.5 ohms at a Vgs of 10V. 7. Can the FGH40N60SMD be used in a switching power supply? Yes, the FGH40N60SMD is well-suited for use in high-efficiency switching power supplies due to its low on-resistance and high voltage rating. 8. How can I heat-sink the FGH40N60SMD effectively? Proper thermal management such as using a heatsink or mounting the device on a PCB with sufficient copper area can help dissipate heat. The MOSFET should be operated within its thermal limits. 9. What type of load can be driven by the FGH40N60SMD? The FGH40N60SMD can drive inductive, resistive, and capacitive loads in power conversion circuits. 10. Can the FGH40N60SMD be used for motor control applications? Yes, it can be used in motor control applications due to its high current and voltage ratings, which make it suitable for driving motors in various configurations. 11. What is the breakdown voltage of the FGH40N60SMD? The breakdown voltage (Vds) of the FGH40N60SMD is 600V. 12. Is the FGH40N60SMD suitable for use in automotive applications? Yes, it can be used in automotive applications as long as it is operated within its voltage and current specifications. 13. How do I protect the FGH40N60SMD from overvoltage? You can protect the MOSFET by using a Zener diode or other overvoltage protection devices to clamp the voltage at safe levels. 14. What is the gate charge for the FGH40N60SMD? The gate charge for the FGH40N60SMD is around 90nC, which is typical for power MOSFETs in this voltage range. 15. What is the Rds(on) of the FGH40N60SMD at 25°C? At 25°C, the on-resistance is typically around 0.5 ohms, but it can vary depending on specific conditions. 16. How does temperature affect the FGH40N60SMD performance? As temperature increases, the MOSFET’s on-resistance increases, and its current handling capabilities decrease. Proper thermal management is important. 17. What is the power dissipation of the FGH40N60SMD? Power dissipation depends on the current, switching frequency, and on-resistance. The device can dissipate significant power if not properly heat-sinked. 18. How does switching frequency affect the FGH40N60SMD? The switching frequency impacts the switching losses, so a low switching frequency is preferable to reduce losses. However, the FGH40N60SMD is designed for high-frequency operation. 19. Can the FGH40N60SMD be used in high-efficiency power conversion circuits? Yes, the FGH40N60SMD is designed for high efficiency in power conversion circuits, thanks to its low Rds(on) and high breakdown voltage. 20. How should I choose a MOSFET for my application? When selecting a MOSFET, ensure the voltage and current ratings meet or exceed your application's requirements, and consider the thermal management and switching characteristics.Let me know if you need further clarification or additional details!
