General Description
The BC547 is a popular general-purpose NPN bipolar junction transistor (BJT) widely used in low-power switching and amplification applications
Specifications
1. Type: NPN Bipolar Junction Transistor
2. Package: TO-92 (through-hole)
3. Maximum Ratings:
- Collector-Emitter Voltage (Vceo): 45V
- Collector-Base Voltage (Vcbo): 50V
- Emitter-Base Voltage (Vebo): 6V
- Collector Current (Ic): 100mA
- Total Power Dissipation (Pd): 500mW (at Ta = 25°C)
- Junction Temperature (Tj): -55°C to 150°C
4. Electrical Characteristics:
- DC Current Gain (hFE): 110 to 800 (depending on the variant: BC547A, BC547B, or BC547C)
- Collector-Emitter Saturation Voltage (Vce(sat)): 0.2V (max, at Ic = 10mA, Ib = 0.5mA)
- Base-Emitter Voltage (Vbe): 0.55 to 0.7V (at Ic = 2mA, Vce = 5V)
5. Frequency Characteristics:
- Transition Frequency (fT): 300 MHz (typical, at Vce = 5V, Ic = 10mA)
6. Applications:
- Low-power switching circuits
- Signal amplification
- General-purpose electronic projects
Advantages
- Inexpensive and widely available.
- Easy to use in small signal applications.
- Reliable performance for general-purpose use.