BC547, NPN General-Purpose Transistor, TO-92

The BC547 is a low-power NPN bipolar junction transistor used in general-purpose amplification and switching applications. It is a staple in analog electronics due to its reliability, fast response, and wide availability. The TO-92 package makes it a favorite for through-hole prototyping and circuit design in education, hobby, and commercial electronics.

Key Features:

• Moderate Voltage Rating: Withstands collector-emitter voltages up to 45V.
• Low Noise: Ideal for audio frequency and signal processing.
• Fast Switching Speed: Turn-on time as low as 0.25 µs.
• Compact TO-92 Package: Suitable for breadboarding and small circuit designs.
• Multiple Gain Classes: Available in A, B, and C classifications with h_FE ranges up to 800.
• Complementary Pairing: Matches with BC557 (PNP) for push-pull amplifier stages.

Additional Specifications:

• Type: NPN
• Max Voltage: 45V
• Max Current: 100Ma