A small electronic component, used in most of the electronic circuits, Yes BC547 is a popular semiconductor using for various electronics circuits for signal amplification and switching purpose. In this article we will see more information’s about BC547 NPN transistor and build a basic knowledge about it.
What is BC547 Transistor?
BC547 is a BJT transistor comes with a small plastics packaging of TO-92. Silicon material is used inside this transistor for building. Due to its compact size and shape, this transistor is considered as a general purpose NPN transistor.
Characteristics of BC547 Transistor
- Maximum Collector Current (Ic): 100 mA
- Maximum Collector-Emitter Voltage (Vce): 45 V
- Maximum Collector-Base Voltage (Vcb): 50 V
- Maximum Emitter-Base Voltage (Veb): 6 V
- Power Dissipation (Ptot): 500 mW (0.5 W)
- DC Current Gain (hFE): Typically 125 to 900 (depending on variant A/B/C)
BC547 Transistor Pinout Diagram
Basic Knowledge of BC547 Transistor Parameters
- General purpose NPN transistor
- Bipolar junction transistor also known as BJT transistor
- Three terminals of collector, base and emitter.
- Maximum collector current at 25 Degree is 100 mA.
- Power producing is around 500mW.
- Used for signal amplifications and switching circuits like relay or LED controlling.
DC Current Gain (hFE) Based on the Variants
- BC547A: 125 – 220
- BC547B: 240 – 330
- BC547C: 450 – 600
BC547 Transistor Applications
- Signal amplification (audio, low current)
- Switching (low current loads)
- Used in sensors, hobby circuits, and microcontroller interfaces
