BC547 NPN bipolar junction transistor (BJT) Datasheet

Introduction:

The BC547 is a versatile NPN bipolar junction transistor (BJT) commonly used in low-power amplification and switching circuits. It has a maximum collector current of 100mA, a voltage rating of 45V, and a high current gain (hFE) ranging from 110 to 800. Known for its reliability, compact TO-92 package, and low noise characteristics, the BC547 is ideal for audio amplification, signal processing, and interfacing applications in electronics. Its ease of use and availability make it a popular choice for hobbyists, students, and professionals alike.

BC547 Pin Configuration:

Pin Configuration (TO-92):

1. Pin 1 (Collector): Current enters the collector.
2. Pin 2 (Base): Controls the transistor’s operation.
3. Pin 3 (Emitter): Current exits the emitter.

Bc547 Pinout:

General Information:

• Type: NPN BJT
• Package: TO-92
• Usage: Amplification and switching

Features of BC547:

• Type: NPN transistor in TO-92 package.
• Voltage Ratings: V_CEO = 45V, V_CBO = 50V, V_EBO = 6V.
• Current: max = 100mA.
• Power: Max dissipation = 500mW.
• Gain : 110–800 (varies by A, B, C variants).
• Frequency: Transition frequency = 150MHz.
• Applications: Amplification, switching, and signal processing.
• Compact: TO-92 package, easy for PCB mounting.

Applications:

1. Signal amplification in audio devices.
2. Low-power switching circuits.
3. Oscillators and timers.
4. Current-controlled operation in microcontroller interfaces.