The BC517 is an NPN silicon epitaxial Darlington transistor designed for switching and amplification purposes. Its high current gain makes it suitable for driving loads such as relays, LEDs, and small motors from microcontrollers or low-current circuits. This transistor is widely used in hobby electronics, industrial controls, and consumer devices. Housed in a TO-92 through-hole package, the BC517 offers easy soldering and integration into various prototyping and PCB projects.

Features of BC517 NPN Transistor:

1. High DC current gain (Darlington pair configuration)
2. Suitable for medium-power switching and amplification
3. Low base current requirement for control circuits
4. Compact TO-92 package for easy PCB mounting
5. Reliable for relay drivers, LED drivers, and signal amplifiers

Specifications of BC517 NPN Transistor:

• Type: NPN Darlington
• Collector-Emitter Voltage (Vceo): 50V
• Collector-Base Voltage (Vcbo): 50V
• Emitter-Base Voltage (Vebo): 5V
• Collector Current (Ic): 500mA (max)
• DC Current Gain (hFE): 30,000 (typical)
• Package: TO-92 through-hole
• Pin Configuration: Emitter, Collector, Base
• Operating Temperature: -55°C to +150°C

Package Includes:

1 × BC517 NPN Transistor – TO-92 Package