Transistor SE140 NPN 2mA 150V

The Transistor SE140 is a precision-engineered NPN transistor designed for low-current, high-voltage applications that demand accuracy, stability, and minimal signal distortion. It is particularly suited for amplification, signal processing, and general-purpose electronic circuits that require low power consumption and high gain. Its compact design, consistent performance, and wide operating voltage range make it ideal for both educational projects and professional circuit designs.

Key Features

• Type: NPN Silicon Small Signal Transistor

• Collector Current (Ic): 2mA continuous

• Collector-Emitter Voltage (Vce): 150V

• Collector-Base Voltage (Vcb): 160V

• Emitter-Base Voltage (Veb): 5V

• DC Current Gain (hFE): 100–400 (typical)

• Transition Frequency (fT): 150 MHz typical

• Package Type: TO-92 (standard plastic encapsulation for low power dissipation)

Advantages

• Extremely low collector current, allowing efficient operation in low-power and signal-level circuits.

• High collector-emitter voltage (150V), making it suitable for circuits with high voltage swings.

• Excellent frequency response, ensuring fast switching and clear signal amplification.

• Stable performance across a wide range of temperatures and operating conditions.

• Designed for long-term reliability and minimal signal noise.

Applications

• Signal Amplifiers: Ideal for small-signal amplification in radio, audio, and instrumentation circuits.

• Voltage Level Shifters: Used in precision circuits where voltage translation is needed.

• Oscillator Circuits: Supports high-frequency oscillations due to low parasitic capacitance.

• Switching Applications: Operates efficiently as a low-current switch in logic and control systems.

• Educational and Lab Projects: Suitable for learning, prototyping, and circuit testing environments.

Electrical Characteristics (Typical Values at 25°C)

Datasheet Summary

• Model: SE140

• Polarity: NPN

• Collector Current (Ic): 2mA

• Collector-Emitter Voltage (Vce): 150V

• Frequency Response: 150 MHz

• Package: TO-92

• Power Dissipation: 500 mW

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

Conclusion

The Transistor SE140 is a highly stable NPN transistor that excels in low-power and high-voltage signal applications. Its ability to maintain performance integrity at voltages up to 150V with only 2mA current makes it a preferred choice for signal amplification, switching, and experimental electronics. Compact, efficient, and durable, the Transistor SE140 NPN 2mA 150V is an excellent component for engineers and hobbyists who value precision and reliability in their electronic designs.