Description

Transistor A94 NPN 200MA 400V


Description:Transistor A94 NPN 200MA 400V

A94 Transistor is a high-voltage NPN bipolar junction transistor (BJT) designed for low to medium current switching and amplification applications. The A94 Transistor offers exceptional voltage handling capability, with a maximum collector-emitter voltage of 400V and a collector current capacity of 200mA, making it suitable for high-voltage, low-current signal amplification circuits and general-purpose power control applications.

Built with advanced silicon epitaxial technology, the A94 Transistor ensures excellent electrical performance, high gain, and stable operation even under varying temperature and voltage conditions. It provides a fast switching response, low leakage current, and reliable performance in both linear and digital circuits. The transistor is commonly used in TV vertical deflection, power supplies, lighting control, and general high-voltage signal amplification.

Encapsulated in a TO-92 package, the A94 Transistor combines compact size with high reliability, making it ideal for industrial, educational, and hobby electronics projects.


Key Features:

  • NPN Bipolar Transistor: Designed for high-voltage, low-current applications.

  • High Voltage Capability: Supports up to 400V collector-emitter voltage.

  • Moderate Collector Current: Operates efficiently with up to 200mA current.

  • High DC Gain (hFE): Ensures stable and consistent signal amplification.

  • Fast Switching Speed: Suitable for rapid digital and analog signal control.

  • Low Leakage Current: Minimizes power loss and enhances efficiency.

  • Compact TO-92 Package: Easy to install and integrate into any circuit.


Applications:

  • High-voltage signal amplification

  • Switching regulators and converters

  • TV and display vertical deflection circuits

  • LED drivers and voltage control modules

  • Power supply feedback and monitoring circuits

  • General-purpose switching and control systems


Electrical Characteristics (Typical Values):

Parameter Symbol Value Unit
Collector-Emitter Voltage Vceo 400 V
Collector Current Ic 200 mA
Base Current Ib 50 mA
Power Dissipation Ptot 1 W
DC Current Gain hFE 40–320
Transition Frequency fT 100 MHz
Operating Temperature Tj -55 to +150 °C

Advantages:

  • High-voltage operation ensures compatibility with demanding applications.

  • Provides low distortion and high gain for accurate amplification.

  • Compact, energy-efficient design suitable for small circuits.

  • Reliable and thermally stable in harsh operating environments.

  • Ideal replacement for general-purpose high-voltage NPN transistors.


Summary:

The A94 Transistor is a durable and efficient NPN high-voltage transistor built for precision switching and signal amplification. With a 400V voltage rating and a 200mA current capacity, it delivers outstanding performance in TV circuits, amplifiers, and power regulators. Its excellent linearity, fast response, and high reliability make it a versatile component for industrial, educational, and consumer electronics. Whether used in control systems or signal processing applications, the A94 Transistor guarantees stability, efficiency, and dependable long-term operation.

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