BC547 NPN Transistor

The BC547 is a popular NPN bipolar junction transistor (BJT) that is commonly used in electronic circuits for amplification or switching purposes. Here are some key characteristics and specifications of the BC547 transistor:
Type: NPN (Negative-Positive-Negative) transistor.
Polarity: It has three terminals: Base (B), Collector (C), and Emitter (E).
Maximum Voltage Ratings:

Collector-Base Voltage (V_CBO): 50V

Collector-Emitter Voltage (V_CEO): 45V

Emitter-Base Voltage (V_EBO): 6V

Current Ratings:

Continuous Collector Current (I_C): 100 mA (milliamps)

Peak Collector Current (I_CM): 200 mA

Base Current (I_B): 5 mA

Power Dissipation:

Total Power Dissipation (P_tot): 500 mW (milliwatts)

Transition Frequency (f_T): Typically around 300 MHz.

Common Uses:
Amplification: It is often used in small signal amplification circuits due to its high current gain (hFE typically 200 to 450).
Switching: It can be used to switch moderate currents and voltages.
Oscillator Circuits: Due to its frequency response, it can be used in oscillator circuits at moderate frequencies.