This part is a kind of semiconductor called 2SC1061.

Function of this product has NPN EPITAXIAL SILICON TRANSISTOR(LOW FREQUENCY POWER AMPLIFIER).

Manufacturers : Wing Shing Computer Components

Image and pinout :

Some of the text within the PDF file :

2SC1061 NPN EPITAXIAL SILICON TRANSISTOR LOW FREQUENCY POWER AMPLIFIER TO-220 ! Complement to 2SA671 ABSOLUTE MAXIMUM RATINGS (TA=25℃) Characteristic Collector-Base Voltage Collector-Emitter Voltage Emitter-Base voltage Collector Current (DC) Collector Dissipation (Tc=25℃) Junction Temperature Storage Temperature Symbol VCBO VCEO VEBO IC PC Tj Tstg Rating 50 50 7 3 25 150 -50~150 Unit V V V A W ℃ ℃ ELECTRICAL CHARACTERISTICS (TA=25℃) Characteristic Collector Cutoff Current Emitter Cutoff Current DC Current Gain Collector- Emitter Saturation Voltage Current Gain Bandwidth Product Symbol ICBO IEBO hFE1 VCE(sat) fT Test Condition VCB= 50V , IE=0 VEB= 7V , IC=0 VCE= 4V , IC=1A IC=3A , IB=0.3A VCE= 5V , IC=0.5A Min Typ Max 100 100 200 1.0 8 Unit µA µA 35 V MHZ Wing Shing C [ ... ]

2SC1061 PDF Datasheet Download