BC369 PNP Transistor Pinout Datasheet

Introduction

The BC369 is a PNP silicon bipolar junction transistor (BJT) designed primarily for low-noise, high-gain small-signal amplification. It is widely used in audio frequency amplifiers, low-level preamplifiers, and signal processing circuits where minimal distortion and clean signal performance are essential. The transistor provides stable operation over a wide temperature range and ensures excellent linearity, making it an ideal component for precision analog and high-fidelity audio applications.

This transistor is encapsulated in a TO-92 plastic package, which makes it compact, lightweight, and suitable for both through-hole and prototype circuit designs. The BC369 offers a maximum collector current of –100mA and a collector-emitter voltage of –20V, ensuring dependable performance in low-voltage circuits. Its high current gain (hFE) and consistent characteristics make it highly reliable in sensitive amplifier input stages where signal purity is a priority.

BC369 PNP Transistor

The BC369 belongs to the BC3xx family of general-purpose low-power PNP transistors and is often paired with its NPN complementary counterpart in push-pull amplifier designs. With its low noise figure, excellent frequency response, and stable gain, it remains a preferred choice among engineers and hobbyists for designing audio amplifiers, sensor interfaces, and analog control circuits.

Pinout of BC369

Key Features

• PNP low-noise transistor optimized for audio amplification
• Designed for small-signal, low-frequency applications
• High current gain ensures strong signal amplification
• Compact and reliable TO-92 package design
• Stable performance across a wide temperature range
• Ideal for use in analog and audio preamplifier stages

Specifications/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 group)
• Transition Frequency (fT): 100MHz typical
• Noise Figure: 2dB typical
• Junction Temperature Range: –55°C to +150°C
• Package Type: TO-92

Pin Configuration

Comparison Summary: BC307 vs BC308 vs BC309

• BC307 has the highest collector-emitter voltage rating (–45V), making it ideal for higher voltage circuits or preamplifier stages that require wide headroom.
• BC308 offers a moderate collector-emitter voltage (–25V) with a wide hFE range, providing balanced performance for general-purpose audio and analog amplification.
• BC309 has the lowest collector-emitter voltage rating (–20V) but provides the lowest noise figure, making it the best choice for high-sensitivity input and microphone preamplifier circuits where signal clarity is crucial.

More Circuit Layouts

Key Applications of BC369 PNP Transistor

• Audio preamplifiers and low-level signal amplifiers
• High-gain amplifier input stages
• Microphone and tone control circuits
• Low-frequency signal processing
• Analog sensor signal conditioning
• General-purpose low-noise switching circuits

NPN Complimentary Transistor

• The NPN complementary transistor of BC369 is BC549.
  Together, BC369 (PNP) and BC549 (NPN) form a balanced complementary pair commonly used in push-pull audio amplifier configurations and class AB amplifier stages, delivering low distortion and excellent signal symmetry.

Equivalent Transistors of of BC369 PNP Transistor

• BC307
• BC308
• BC309
• BC558
• BC559
• 2N2907
• 2N3906
• S8550

(Pin configuration of some transistors mentioned here may different from BC369).

Datasheet of BC368 PNP Transistor

Click the following Button below to download the datasheet of BC369 Transistor :

More projects, You may like:

• Video Transmitter DIY Homemade FM Radio Transmitter
• Adjustable Power Supply DIY Battery Charger
• 12V-220V 500 Watt inverter DIY Homemade
• MPPT Solar Charge Controller DIY Homemade
• DIY LA4440 bass amplifier homemade

For more project and circuit diagrams, you can go through the Schematics in the main menu where you can find many interesting projects and circuit diagrams like audio amplifier circuits, voltage booster circuit, battery charger circuit and timer circuits etc., which are all beginner circuit projects. Feel free to check them out!

Thank you for visiting the article.