BC817-40

The BC817-40 is a general-purpose NPN transistor used in a variety of electronic circuits for switching and amplification applications. Here’s a detailed description:

• Type: NPN Bipolar Junction Transistor (BJT).
• Voltage Rating: Maximum collector-emitter voltage (V_CE) of 45V, making it suitable for low to moderate voltage applications.
• Current Rating: Maximum continuous collector current (I_C) of 800mA, allowing it to handle moderate current levels in switching and amplification tasks.
• Gain: High current gain (h_FE) ranging from 100 to 315 at a collector current of 10mA, providing effective amplification of signals.
• Package: Typically available in a TO-92 package, which is a three-lead, through-hole configuration suitable for standard PCB mounting.
• Applications: Commonly used in low-power amplifiers, switching applications, and signal processing circuits. It’s ideal for driving small loads, interfacing with digital logic circuits, and other general-purpose uses.

The BC817-40 is favored for its reliability and versatility in both switching and amplification tasks, making it a popular choice in consumer electronics, industrial control, and general electronic applications.