The 2N3055 is a silicon NPN power transistor intended for general purpose applications. It was introduced in the early 1960s by RCA using a hometaxial power transistor process, transitioned to an epitaxial base in the mid-1970s. Its numbering follows the JEDEC standard. It is a transistor type of enduring popularity. Wikipedia device manufacturer type case/package Vceo(BR) Ic (continuous) PD (@ case=25 deg) hfe fT (MHz) 2N3055 RCA 1977[15]ON Semiconductor 2005 NPN TO-3 (=TO-204AA) 60VCEO(sus) 15A 115W 20-70 at 4A 2.5 MHz min (hfe at 1 MHz) fhfe >= 20 kHz @ 1A
