This part is a kind of semiconductor called C3680.

Function of this product has 2SC3680.

Manufacturers : Sanken electric

Image and pinout :

Some of the text within the PDF file :

2SC3680 Silicon NPN Triple Diffused Planar Transistor (High Voltage Switching Transistor) sAbsolute maximum ratings (Ta=25°C) Symbol VCBO VCEO VEBO IC IB PC Tj 2SC3680 900 800 7 7(Pulse14) 3.5 120(Tc=25°C) 150 –55 to +150 Unit V V V A A W °C °C Application : Switching Regulator and General Purpose (Ta=25°C) sElectrical Characteristics Symbol ICBO IEBO V(BR)CEO hFE VCE(sat) VBE(sat) fT COB Conditions VCB=800V VEB=7V IC=10mA VCE=4V, IC=3A IC=3A, IB=0.6A IC=3A, IB=0.6A VCE=12V, IE=–2A VCB=10V, f=1MHz 100max 100max 800min 10 to 30 0.5max 1.2max 6typ 105typ External Dimensions MT-100(TO3P) 5.0±0.2 15.6±0.4 9.6 2.0 1.8 4.8±0.2 2.0±0.1 2SC3680 Unit µA µA 19.9±0.3 4.0 V V MHz pF a b ø3.2±0.1 20.0min 4.0max V 2 3 1.05 +0.2 -0.1 0.65 +0.2 -0.1 1.4 [ ... ]

C3680 PDF Datasheet Download