BC368 NPN Transistor Pinout Datasheet

Introduction

The BC368 is a low-noise NPN silicon bipolar junction transistor (BJT) specifically designed for low-level signal amplification and audio frequency applications. It is widely used in high-fidelity audio preamplifiers, low-frequency amplifiers, and signal conditioning circuits where signal integrity and noise performance are critical. With its high gain and stable electrical characteristics, the BC368 provides excellent performance in low-power, high-sensitivity analog circuits.

Encapsulated in a TO-92 plastic package, the BC368 offers a maximum collector current of 100mA and a collector-emitter voltage rating of 20V, making it suitable for a wide range of general-purpose amplifier and switching designs. Its high DC current gain (hFE) ensures strong signal amplification with minimal distortion, while the transistor’s low noise figure makes it ideal for use in audio stages, sensor circuits, and radio-frequency preamplifiers.

BC368 NPN Transistor

The BC368 belongs to the BC3xx transistor family, known for consistent performance and interchangeability. It complements the BC369 PNP transistor, forming a matched pair that is often used in push-pull amplifier stages or balanced signal designs. Because of its stability, linear response, and reliability, the BC368 is a favorite among audio engineers, circuit designers, and electronics hobbyists for both educational and professional applications.

BC368 Pinout

Pin Configuration

Key Features

• NPN low-noise transistor designed for audio and signal amplification
• Excellent linearity and high DC current gain
• Compact TO-92 plastic encapsulation for easy PCB mounting
• Reliable switching and amplification characteristics
• Stable operation over a wide temperature range
• Compatible with general-purpose and low-power circuits

Characteristics

• Collector-Emitter Voltage (VCEO): 20V
• Collector-Base Voltage (VCBO): 25V
• Emitter-Base Voltage (VEBO): 5V
• Collector Current (IC): 100mA
• Power Dissipation (Ptot): 500mW
• DC Current Gain (hFE): 100 to 800 (depending on classification)
• Transition Frequency (fT): 100MHz typical
• Noise Figure: 2dB typical
• Junction Temperature (Tj max): 150°C
• Package Type: TO-92

More Circuit Layouts

Key Applications of BC368 Transistor

• Low-frequency audio preamplifiers
• Signal processing and conditioning circuits
• Radio frequency preamplifiers (up to 100MHz)
• Sensor and detector amplifier stages
• General-purpose low-noise switching
• Class A and Class AB audio amplifier circuits

PNP Complementary Transistor

• The PNP complementary transistor for the BC368 is BC369.
  This complementary pair (BC368 & BC369) is widely used in push-pull amplifier circuits, audio signal drivers, and balanced differential stages, providing excellent signal symmetry and low distortion in analog designs.

Equivalent of BC368 NPN Transistor

• BC546
• BC548
• BC549
• 2N2222
• 2N3904
• S8050
• MPSA18

Always verify the pin configuration and ratings before substitution.

Datasheet of BC368 NPN Transistor

Click the following Button to download the datasheet of BC638 Transistor :

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