2N3904 NPN

This 2N3904 NPN transistor is a versatile semiconductor device engineered for general-purpose amplification and switching in low to medium power circuits. It is widely used in hobbyist and professional applications that demand reliable performance, low noise, and consistent thermal behavior. Collector-Emitter Voltage: 40V — suitable for moderate voltage environments. Collector Current: up to 200mA — supports common switching and amplification tasks. Gain Bandwidth Product (fT): 300 MHz — enables effective high-frequency signal processing. Power Dissipation: 625mW — provides durability under continuous load within its rated limits. Low Noise Figure — contributes to cleaner audio and RF amplification. Built using silicon planar epitaxial technology, the 2N3904 offers improved switching speed and thermal stability compared with many generic NPN devices. Its construction reduces leakage currents and minimizes noise, delivering higher fidelity in signal amplification and reliable operation in compact designs. These attributes make the 2N3904 a balanced choice where voltage tolerance, current capacity, and frequency response are required together. Because of its combination of ratings and consistent performance, the 2N3904 remains a trusted component for designers and makers who require an economical, dependable transistor for a wide range of circuit applications.