This part is a kind of semiconductor called B772.

Function of this product has Audio Frequency Power Amplifier.

Manufacturers : Fairchild Semiconductor

Image and pinout :

Some of the text within the PDF file :

KSB772 KSB772 Audio Frequency Power Amplifier • Low Speed Switching • Complement to KSD882 1 TO-126 2.Collector 3.Base 1. Emitter PNP Epitaxial Silicon Transistor Absolute Maximum Ratings TC=25°C unless otherwise noted Symbol VCBO VCEO VEBO IC ICP IB PC Rθja Rθjc TJ TSTG Parameter Collector-Base Voltage Collector-Emitter Voltage Emitter-Base Voltage Collector Current (DC) *Collector Current (Pulse) Base Current (DC) Collector Dissipation (TC=25°C) Collector Dissipation (Ta=25°C) Junction to Ambient Junction to Case Junction Temperature Storage Temperature Value - 40 - 30 -5 -3 -7 - 0.6 10 1 132 13.5 150 - 55 ~ 150 Units V V V A A A W W °C/W °C/W °C °C * PW≤10ms, Duty Cycle≤50% Electrical Characteristics TC=25°C unless otherwise noted Symbol ICBO IEBO hFE1 hFE2 VCE( [ ... ]

B772 PDF Datasheet Download