Transistor D1273 NPN 3A 60V

The Transistor D1273 is a high-quality NPN transistor designed for medium-power amplification and general-purpose switching applications. It combines strong current handling, reliable voltage capacity, and efficient thermal characteristics, making it an excellent choice for power supply circuits, audio amplifiers, and control systems. The Transistor D1273 is engineered to deliver dependable performance, long operational life, and consistent electrical behavior under varying load and temperature conditions.

Key Features

• Type: NPN Silicon Power Transistor

• Collector Current (Ic): 3A continuous

• Collector-Emitter Voltage (Vce): 60V

• Collector-Base Voltage (Vcb): 80V

• Emitter-Base Voltage (Veb): 5V

• DC Current Gain (hFE): 40 – 200 (typical at 2A, 5V)

• Transition Frequency (fT): 4 MHz typical

• Package Type: TO-220 for efficient heat dissipation and compact installation

Advantages

• High collector current capacity up to 3A, suitable for medium-power circuits and amplifiers.

• Excellent thermal stability for consistent performance across temperature variations.

• Low collector-emitter saturation voltage, enhancing efficiency and reducing energy loss.

• Fast switching response, allowing smooth operation in power regulation and motor control systems.

• Durable TO-220 package ensuring optimal heat transfer and long service life.

Applications

• Audio Power Amplifiers: Delivers clean, distortion-free output for high-fidelity sound systems.

• Switching Circuits: Performs efficiently as a medium-current switch in electronic control units.

• Power Supply Units: Commonly used in regulated DC power supplies and converters.

• Motor Drivers: Suitable for controlling low- to medium-current DC motors.

• Lighting and Inverter Circuits: Provides stable performance in LED and inverter-based applications.

Electrical Characteristics (Typical Values at 25°C)

Datasheet Summary

• Model: D1273

• Polarity: NPN

• Collector Current (Ic): 3A

• Collector-Emitter Voltage (Vce): 60V

• Power Dissipation: 40W

• Transition Frequency: 4 MHz

• Package Type: TO-220

• Complementary Pair: B817 (PNP transistor)

• Operating Temperature: -55°C to +150°C

Conclusion

The Transistor D1273 is a versatile NPN transistor built to handle medium-level power applications efficiently. With a 3A collector current and 60V voltage tolerance, it ensures high performance, low heat loss, and superior reliability in various electronic systems. Its durability, efficiency, and fast switching capabilities make the Transistor D1273 NPN 3A 60V a trusted component for engineers, technicians, and electronics enthusiasts seeking stable and long-lasting solutions for amplification and power control designs.