Introduction
The BC560 transistor is a low-noise PNP bipolar junction transistor (BJT) designed primarily for audio frequency low-noise preamplifier and signal amplification applications. It is widely used in consumer audio electronics, instrumentation circuits, and general-purpose amplification stages where signal clarity and minimal distortion are crucial. Its low noise figure makes it highly suitable for applications such as microphone preamplifiers, tone control circuits, and audio mixers.
The BC560 comes in the TO-92 plastic package, which is compact, lightweight, and easy to integrate into PCB designs. It offers a collector-emitter voltage of -45V and can handle a maximum collector current of -100mA, making it ideal for low-power amplification circuits. Furthermore, it is available in different gain groupings (BC560A, BC560B, BC560C) with DC current gain (hFE) ranging from 125 to 800, giving flexibility to circuit designers to select the appropriate variant.
BC560 PNP Transistor
Due to its transition frequency of around 150 MHz, the BC560 transistor performs well not only in audio stages but also in high-frequency signal processing circuits. Its excellent noise performance, wide availability, and affordability make it a favorite among engineers, students, and hobbyists working on low-noise amplifier circuits, sensor interfaces, and switching applications.
BC560 Pinout
BC560 Transistor Key Features
- Low-noise design, ideal for audio frequency applications.
- Compact and cost-effective TO-92 package.
- Widely used in preamplifiers and audio processing circuits.
- Available in three gain groups (A, B, C) for design flexibility.
- Reliable and durable for long-term projects.
- High transition frequency for wideband signal use.
Specifications/Characteristics of BC560 PNP Transistor
- Maximum Collector-Base Voltage (Vcb): -50V
- Maximum Collector-Emitter Voltage (Vce): -45V
- Maximum Emitter-Base Voltage (Veb): -5V
- Maximum Collector Current (Ic): -100mA
- Total Power Dissipation (Ptot): 500mW
- DC Current Gain (hFE): 125 – 800 (depending on variant)
- Transition Frequency (ft): 150 MHz (typical)
- Noise Figure: Very low (suitable for audio amplification)
- Operating Junction Temperature: -65°C to +150°C
- Package: TO-92 plastic
BC560 Pin Configuration
| Pin# | Pin Name | Pin Description |
|---|---|---|
| 1 | Collector | Current flows out, usually connected to load |
| 2 | Base | Controls transistor switching and biasing |
| 3 | Emitter | Current flows in, connected to negative supply |
More Circuit Layouts
Key Applications of BC560 PNP Transistor
- Low-noise audio preamplifiers.
- Signal processing and tone control circuits.
- Microphone and sensor amplifier circuits.
- General-purpose low-power switching.
- High-fidelity audio mixers and equalizers.
- Oscillator and driver circuits.
NPN Complimentary Transistor
BC550 (NPN) is the complementary transistor to BC560.
Equivalent Transistors of BC560
- BC556 (PNP, -65V, general purpose).
- BC557 (PNP, -45V, general purpose).
- BC558 (PNP, -30V, low-power applications).
- 2N3906 (PNP general-purpose transistor).
- 2N2907 (PNP transistor with higher current handling).
(Pin configuration of some transistors mentioned here may different from BC560).
Datasheet of BC560 PNP Transistor
Click the following Button below to download the datasheet of BC560 Transistor :
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