BC547 NPN Transistor – General Purpose Low-Power Amplifier & Switch (TO-92 Package)
The BC547 is a widely used NPN bipolar junction transistor (BJT) designed for general-purpose low-power switching and signal amplification. With its compact TO-92 package, it is perfect for breadboarding, prototyping, and educational electronics projects using Arduino, Raspberry Pi, and other microcontrollers.
 
Key Features:
NPN Type Transistor
Commonly used for signal amplification and low-power switching.
Collector Current up to 100 mA
Suitable for driving LEDs, buzzers, or small signal relays.
High DC Current Gain (hFE)
Ideal for signal amplification in sensor and audio circuits.
Low Noise Operation
Useful in low-noise analog applications.
Compact TO-92 Package
Breadboard-friendly for prototyping and circuit building.
 
Applications:
Low-power switching circuits
Analog signal amplification
Audio preamps
Microcontroller-based LED or sensor control
Educational and DIY projects
 
Package Includes:
1 × BC547 NPN Transistor (TO-92)
 
Specifications:
Type: NPN
Max Collector Current (Ic): 100 mA
Collector-Emitter Voltage (Vce): 45 V
Collector-Base Voltage (Vcb): 50 V
Emitter-Base Voltage (Veb): 6 V
DC Gain (hFE): 110 to 800
Transition Frequency: 150 MHz
Package: TO-92
Mounting: Through-hole
 
Dimensions:
Body Length: 5 mm
Body Width: 4 mm
Lead Length: 14 mm
 
Weight: approx. 0.2 g
 
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Shipping Weight = 20 grams