General Description
The BC517 is an NPN Darlington transistor, commonly used in switching and amplification applications that require high current gain.
Key Specifications
1. Type: NPN Darlington Transistor
2. Package: TO-92 (through-hole)
3. Maximum Ratings:
• Collector-Emitter Voltage (Vceo): 30V
• Collector-Base Voltage (Vcbo): 30V
• Emitter-Base Voltage (Vebo): 5V
• Collector Current (Ic): 500mA
• Collector Dissipation (Pc): 625mW (at Ta = 25°C)
• Junction Temperature (Tj): -55°C to 150°C
4. Electrical Characteristics:
• DC Current Gain (hFE): 30,000 (min, at Ic = 10mA, Vce = 5V)
• Collector-Emitter Saturation Voltage (Vce(sat)): 2V (max, at Ic = 100mA, Ib = 1mA)
5. Applications:
• High-gain switching circuits
• Relay drivers
• LED drivers
• Signal amplification
Features
• Darlington Configuration: Provides very high current gain (hFE).
• Low base current required for operation.
• Compact and lightweight design.