BC550 Low Noise General Purpose NPN Transistor – TO-92 Package

The BC550 is a low-noise general-purpose NPN bipolar junction transistor (BJT) designed for signal amplification and switching applications. Renowned for its excellent noise performance and high gain characteristics, it is widely used in audio preamplifiers, instrumentation equipment, sensor interfaces, signal processing circuits, and other low-level signal applications. The compact TO-92 package allows easy through-hole PCB mounting.

Key Features -

• Low-noise NPN transistor

• General-purpose amplification and switching applications

• High DC current gain (hFE)

• Excellent performance in low-level signal circuits

• Compact TO-92 through-hole package

• Reliable and stable operation

• Suitable for audio and instrumentation applications

Specifications -

• Product type - Bipolar Junction Transistor (BJT)

• Part number - BC550

• Transistor polarity - NPN

• Technology - Silicon

• Package type - TO-92

• Mounting type - Through Hole

• Number of pins - 3

• Collector-Emitter Voltage (VCEO) - 45V

• Collector-Base Voltage (VCBO) - 50V

• Emitter-Base Voltage (VEBO) - 5V

• Maximum Collector Current (IC) - 100mA

• Power Dissipation - 500mW

• Transition Frequency (fT) - 150MHz

• Noise Figure - Low Noise Performance

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

Applications -

• Audio preamplifiers and amplifier stages

• Low-level signal amplification

• Instrumentation equipment

• Sensor interface circuits

• Signal processing systems

• Switching applications

• Educational and DIY electronics projects