2SC418

The 2SC418 is a silicon NPN bipolar junction transistor commonly used in electronics. It is designed for general-purpose amplification and switching applications. Manufactured by various semiconductor companies, it is a widely available and cost-effective component.

Key characteristics of the 2SC418 include its voltage and current ratings, which determine its suitability for specific circuits. It typically has a collector-emitter voltage (Vce) rating that allows it to withstand a certain voltage when operating as a switch. Its continuous collector current (Ic) rating indicates the maximum amount of current it can handle without damage. The transistor also possesses a current gain (hFE), which represents the amplification factor of the device, relating the collector current to the base current.

The 2SC418 is often found in audio amplifiers, power supplies, and control circuits. Its common emitter configuration is frequently employed for voltage and current amplification. As a switching transistor, it can be used to control the flow of current to loads such as LEDs or relays. Its small signal characteristics make it suitable for pre-amplification stages in audio equipment. The transistor's package type, usually a TO-92 or similar plastic package, facilitates easy integration into printed circuit boards. Pinout, consisting of emitter, base, and collector leads, is standardized for ease of use.