This part is a kind of semiconductor called 2SC5470.
Function of this product has Silicon NPN Triple Diffused Character Display Horizontal Deflection Output.
Manufacturers : Hitachi
Image and pinout :

Some of the text within the PDF file :
2SC5470 Silicon NPN Triple Diffused Character Display Horizontal Deflection Output ADE-208-672 (Z) 1st. Edition Oct. 1, 1998 Features • High breakdown voltage VCBO = 1500 V • High speed switching tf = 0.15 µsec(typ.) at fH=64kHz Outline TO–3PFM 1 2 3 1. Base 2. Collector 3. Emitter 2SC5470 Absolute Maximum Ratings (Ta = 25°C) Item Collector to base voltage Collector to emitter voltage Emitter to base voltage Collector current Collector peak current Collector power dissipation Junction temperature Storage temperature Note: 1. Value at Tc = 25° C Symbol VCBO VCEO VEBO IC ic(peak) PC Tj Tstg Note1 Ratings 1500 700 6 20 40 150 150 –55 to +150 Unit V V V A A W °C °C Electrical Characteristics (Ta = 25°C) Item Collector to emitter breakdown voltage Symbol V(BR)CEO Min 700 [ ... ]
2SC5470 PDF Datasheet Download
