BC548 Epitaxial Silicon NPN Transistor – TO-92 Package

The BC548 is a general-purpose epitaxial silicon NPN bipolar junction transistor (BJT) designed for low-noise amplification and switching applications. Featuring reliable performance, high gain, and a compact TO-92 package, it is widely used in audio circuits, signal processing, sensor interfaces, control systems, and educational electronics projects.

Key Features -

• General-purpose NPN transistor

• Epitaxial silicon construction

• Low-noise performance for signal amplification

• Suitable for switching and amplifier circuits

• Compact TO-92 through-hole package

• High DC current gain (hFE)

• Reliable and stable operation

Specifications -

• Product type - Bipolar Junction Transistor (BJT)

• Part number - BC548

• Transistor polarity - NPN

• Technology - Epitaxial Silicon

• Package type - TO-92

• Mounting type - Through Hole

• Number of pins - 3

• Collector-Emitter Voltage (VCEO) - 30V

• Collector-Base Voltage (VCBO) - 30V

• Emitter-Base Voltage (VEBO) - 5V

• Maximum Collector Current (IC) - 100mA

• Power Dissipation - 500mW

• Transition Frequency (fT) - 150MHz

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

Applications -

• Audio amplifier and preamplifier circuits

• Signal amplification applications

• Switching circuits

• Sensor interfacing

• Consumer electronics

• Industrial control systems

• Educational and DIY electronics projects