2SC1815

The 2SC1815 is a standard NPN bipolar junction transistor (BJT) commonly used in electronic circuits. It is part of the 2SC series, which is known for general-purpose amplification and switching applications. The transistor features a silicon planar epitaxial structure, which provides reliable performance across a wide range of voltages and currents.

Typically, the 2SC1815 has a maximum collector-emitter voltage (V_CEO) of around 50 volts and a maximum collector current (I_C) of 100 milliamps. Its gain (hFE) varies from approximately 70 to 300, depending on the specific parameters and temperature. The device has a small package size, usually in TO-18 or TO-92 form factors, making it suitable for compact circuit designs and breadboarding.

The 2SC1815 is frequently used in consumer electronics, audio amplification, switching circuits, and signal processing applications. It is valued for its stable electrical characteristics, low noise, and ease of replacement or substitution within compatible parts.

Manufacturers often specify the device's gain bandwidth product, which is about 100 MHz, supporting its use in high-frequency amplification tasks. Despite being a durable and reliable component, it has been largely replaced in some applications by more modern transistors with higher efficiency or broader voltage and current capabilities. However, the 2SC1815 remains popular in hobbyist projects and legacy systems due to its affordability and broad availability.

The device's pin configuration typically follows a standard layout with the emitter, base, and collector pins, which facilitates easy installation and circuitry design. Its performance characteristics, cost-effectiveness, and versatility continue to make it a common choice for a variety of electronic applications.