This part is a kind of semiconductor called 2SC3358.

Function of this product has NPN Silicon Epitaxial Transistor.

Manufacturers : Unisonic Technologies

Image and pinout :

Some of the text within the PDF file :

UTC 2SC3358 NPN SILICON EPITAXIALTRANSISTOR 3 HIGH FREQUENCY LOW NOISE AMPLIFIER FEATURES *Low Noise and High Gain *High Power Gain 2 4 1 TO-50 1:COLLECTOR 2:EMITTER 3:BASE 4:EMITTER ABSOLUTE MAXIMUM RATINGS (TA=25°C, unless otherwise specified) PARAMETER Collector-base voltage Collector-emitter voltage Emitter-base voltage Collector current Total power dissipation Junction Temperature Storage Temperature SYMBOL VCBO VCEO VEBO Ic PT Tj Tstg RATING 20 12 3 100 250 150 -65 ~ +150 UNIT V V V mA mW °C °C ELECTRICAL CHARACTERISTICS (Ta=25°C, unless otherwise specified) PARAMETER Collector Cutoff Current Emitter Cutoff Current DC Current Gain Gain bandwidth Product Feed-Back Capacitance Noise figure SYMBOL ICBO IEBO hFE fT Cre NF TEST CONDITIONS VCB=10V, IE=0 VEB=1V, IC=0 VCE=10 [ ... ]

2SC3358 PDF Datasheet Download