Transistor K2847

Description of Transistor K2847

The K2847 (officially designated as 2SK2847) is an N-channel MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) designed for high-speed switching and high-efficiency power control applications. Manufactured by leading semiconductor companies such as Toshiba, this transistor is optimized for low on-resistance, high current handling, and excellent switching characteristics.

This power MOSFET belongs to the category of high-voltage, high-speed power switching devices, commonly utilized in applications where precise control of high currents and voltages is required. With a maximum drain-source voltage (Vds) of 500V and a continuous drain current (Id) rating of around 10A, the K2847 is suitable for demanding applications such as power supplies, motor drives, inverters, and high-frequency circuits.

Physically, it is packaged in a TO-220 or TO-3P casing, which provides good thermal performance and ease of mounting on heatsinks for better heat dissipation during high-power operations.

Uses of Transistor K2847

The K2847 transistor is widely used in various industrial, commercial, and consumer electronics applications where high-efficiency switching and power control are essential. Key application areas include:

1. Switching Power Supplies (SMPS)

The K2847 is ideal for high-efficiency Switched-Mode Power Supplies (SMPS), where it acts as the primary switching element, ensuring minimal power loss and faster switching, leading to compact and energy-efficient power supply designs.

2. Motor Control Circuits of Transistor K2847

It is commonly used in DC motor drivers and controllers due to its ability to handle high currents and voltages with rapid switching. This ensures smooth and precise control of motor speed and torque in industrial automation and robotics.

3. Inverters and UPS Systems of Transistor K2847

The K2847 is employed in power inverters and Uninterruptible Power Supplies (UPS), where it functions in the inverter bridge circuits to efficiently convert DC to AC power, ensuring reliable backup power delivery.

4. Lighting Ballasts and LED Drivers

Due to its high efficiency, it is used in electronic ballasts for fluorescent lamps and high-power LED driver circuits, ensuring energy-efficient lighting solutions.

5. Audio Amplifiers of Transistor K2847

In high-power Class D audio amplifiers, the K2847 can be utilized in the output stage to achieve efficient amplification with minimal heat dissipation.

6. Inductive Load Switching

It is suitable for switching inductive loads like transformers, relays, and solenoids, where it withstands voltage spikes caused by inductive kickbacks.

Key Features of Transistor K2847

1. High Voltage and Current Handling

• Drain-Source Voltage (Vds): Up to 500V.

• Continuous Drain Current (Id): Approximately 10A.
  This makes it suitable for high-voltage circuits with substantial current demands.

2. Low On-Resistance (Rds(on))

The K2847 offers a low on-state resistance, minimizing conduction losses during operation. This enhances overall system efficiency and reduces heat generation.

3. High-Speed Switching Capability of Transistor K2847

It features a low gate charge (Qg) and fast rise and fall times, making it ideal for high-frequency switching applications such as SMPS, PWM motor control, and high-speed inverters.

4. Robust Thermal Performance

Packaged in TO-220 or TO-3P with large metal tabs for heat sinking, it supports effective heat dissipation, allowing for reliable operation even under heavy loads.

5. Enhanced Avalanche Energy Rating

The K2847 is designed to withstand energy surges caused by inductive loads (avalanche conditions), protecting the device and the circuit during sudden load changes.

6. Gate Threshold Voltage

With a moderate gate threshold voltage (Vgs(th)) typically around 2-4V, it ensures easy drive capability from logic-level circuits and microcontrollers without requiring large gate currents.

7. Rugged and Durable Construction

Manufactured to endure harsh operating conditions, including voltage surges, thermal stress, and mechanical vibrations in industrial environments.

8. Wide Operating Temperature Range

It can operate reliably in a temperature range of -55°C to +150°C, making it suitable for both indoor and outdoor applications.

Why Choose K2847 Transistor?

• High Efficiency: Low Rds(on) and fast switching reduce power losses.

• Reliable Under High Loads: Excellent thermal and avalanche energy performance.

• Versatile Applications: Suitable for SMPS, motor control, inverters, lighting, and more.

• Durable Design: Industrial-grade construction for long-term stability.

• Compact and Cost-effective: Offers high power handling in a compact TO-220/TO-3P package, balancing performance with affordability.

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