BC547 NPN Transistor

BC547 NPN Transistor Specifications

1. Maximum Ratings:

• Collector-Emitter Voltage (Vce): 45V
• Collector-Base Voltage (Vcb): 50V
• Emitter-Base Voltage (Veb): 6V
• Collector Current (Ic): 100mA (maximum continuous current)
• Power Dissipation (Pd): 500mW
• Junction Temperature (Tj): 150°C (maximum)
• Storage Temperature (Tstg): -55°C to +150°C

2. Electrical Characteristics (at 25°C unless specified):

• DC Current Gain (hFE):
  • For BC547A: 110 to 220
  • For BC547B: 200 to 450
  • For BC547C: 420 to 800
• Collector-Emitter Saturation Voltage (Vce(sat)):
  • Typical: 0.2V
  • Maximum: 0.6V (Ic = 10mA, Ib = 0.5mA)
• Base-Emitter On Voltage (Vbe(on)):
  • Typical: 0.6V
  • Maximum: 0.7V (Ic = 2mA, Vce = 5V)
• Transition Frequency (ft):
  • 150 MHz (minimum) at 100mA, Vce = 5V

3. Thermal Characteristics:

• Thermal Resistance Junction to Ambient (RθJA): 250°C/W
• Thermal Resistance Junction to Case (RθJC): 83.3°C/W

4. Package Information:

• Type: TO-92 (through-hole package)
• Leads: 3 (Collector, Base, Emitter)
• Dimensions:
  • Lead pitch: 2.54mm
  • Lead length: 14mm (approximate)
  • Overall height: 5mm (approximate)

5. Usage:

• Switching Applications: Can switch currents up to 100mA
• Amplification Applications: Used for low-noise signal amplification

6. Pin Configuration:

1. Collector (C)
2. Base (B)
3. Emitter (E)

Typical Applications:

• General-purpose switching
• Signal amplification
• Used in hobbyist circuits
• Low-power audio and signal amplification circuits
• Used in sensor circuits for driving relays, LEDs, etc.