BC546 Transistor – 100mA, 65V, NPN Amplifier – Motorola

What is BC546?

This is a small signal transistor with a maximum current rating of 100 mA and a maximum voltage rating of 65V. It has a low noise figure and is commonly used in low power audio amplifier circuits and general-purpose switching circuits.

Function : 0.1A, 65V, NPN Amplifier Transistor

Package: TO-92 (TO-226AA) Type

Manufacturer: Motorola Inc




The BC546 Transistor is 100mA, 65V, NPN Amplifier. This transistor is a low cost and widely available transistor, making it a popular choice for hobbyist and educational projects. Its low noise figure also makes it useful for audio applications where a clean signal is important


One potential disadvantage of this transistor is its relatively low maximum current and voltage ratings. This makes it unsuitable for high power applications, where a more robust transistor would be needed. It has three pins: the collector (C), base (B), and emitter (E).

Absolute Maximum Ratings (Ta = 25°C)

1. Collector–Emitter Voltage: Vceo = 65V

2. Collector–Base Voltage: Vcbo = 80V

3. Emitter–Base Voltage: Vebo = 6V

4. Collector Current – Continuous : Ic = 100mA

5. Total Device Dissipation @ TA = 25°C : Pd = 625mW





Q1: Can the BC546 be used for switching applications?

A1: Yes, this transistor can be used for low power switching applications, but its current and voltage limitations mean it may not be suitable for higher power switching applications.

BC546 Datasheet


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