The JANTX1N3911R is a 75V NPN silicon power transistor with an operating collector current of up to 2.5A. It is manufactured by Microchip and is designed for use in circuits that require high power switches or amplifiers. It operates at frequencies of up to 100MHz and has a typical transition frequency of 40MHz. The JANTX1N3911R has a very low voltage drop and high speed switching capability, making it suitable for several applications such as TV, audio, and other consumer electronic products.