BC546 Transistor (65V, 0.1A)

Overview

The BC546 is a classic NPN bipolar junction transistor (BJT) widely used in low-power amplification and switching applications. With a collector-emitter voltage rating of 65V and a continuous collector current of 100mA, it offers reliable performance for a broad range of hobbyist and professional electronics projects. Its TO-92 package makes it easy to work with on breadboards and PCBs.

Key Features

• NPN Silicon Transistor – Standard polarity for general-purpose use.
• High Voltage Rating – 65V collector-emitter voltage, ideal for moderate voltage circuits.
• Low Current Capability – 100mA continuous collector current, suitable for small loads.
• TO-92 Package – Compact, through-hole design for easy prototyping.
• Complementary Pair – Pair with BC556 for push-pull and complementary circuits.

Technical Specifications

• Type: NPN Bipolar Junction Transistor
• Collector-Emitter Voltage (Vceo): 65V
• Collector-Base Voltage (Vcbo): 80V
• Emitter-Base Voltage (Vebo): 5V
• Collector Current (Ic): 100mA
• Power Dissipation (Ptot): 500mW
• DC Current Gain (hFE): 110 to 800 (at Ic = 2mA, Vce = 5V)
• Transition Frequency (fT): 100MHz minimum
• Package: TO-92

Applications & Use Cases

• Signal Amplification: Preamplifiers, audio stages, and sensor signal conditioning.
• Switching Circuits: Relay drivers, LED indicators, and logic level shifting.
• Oscillator Circuits: Low-frequency oscillators and timers.
• Education & Prototyping: Ideal for learning transistor fundamentals and building simple circuits.

What's Included

• 1 x BC546 NPN Transistor (TO-92 package)

Compatibility

• Direct replacement for 2N3904 in most low-power applications.
• Compatible with standard breadboards and PCBs.
• Pairs with BC556 (PNP) for complementary circuits.

MOKWN Recommendation

For Egyptian makers and students, the BC546 is a reliable and cost-effective choice for introductory electronics projects. Its high voltage rating and compatibility with common circuits make it a staple in any component kit. Stock up today and keep your projects moving!