This part is a kind of semiconductor called C3788.

Function of this product has PNP/NPN Epitaxial Planar Silicon Transistors.

Manufacturers : Sanyo Semicon Device

Image and pinout :

Some of the text within the PDF file :

Ordering number:EN2253A PNP/NPN Epitaxial Planar Silicon Transistors 2SA1478/2SC3788 High-Definition CRT Display Video Output Applications Features · High breakdown voltage : VCEO≥200V. · Small reverse transfer capacitance and excellent high frequency cahaceteristic : Cre=1.2pF (NPN), 1.7pF (PNP). · Adoption of FBET process. Package Dimensions unit:mm 2042A [2SA1478/2SC3788] ( ) : 2SA1478 Specifications Absolute Maximum Ratings at Ta = 25˚C Parameter Collector-to-Base Voltage Collector-to-Emitter Voltage Emitter-to-Base Voltage Collector Current Peak Collector Current Collector Dissipation Symbol VCBO VCEO VEBO IC ICP PC Junction Temperature Storage Temperature Tj Tstg Electrical Characteristics at Ta = 25˚C Tc=25˚C Conditions Parameter Symbol Conditions Collector C [ ... ]

C3788 PDF Datasheet Download