This part is a kind of semiconductor called C1573B.

Function of this product has 2SC1573B.

Manufacturers : Panasonic Semiconductor

Image and pinout :

Some of the text within the PDF file :

Transistor 2SC1573, 2SC1573A, 2SC1573B Silicon NPN triple diffusion planer type For high breakdown voltage general amplification For small TV video output Complementary to 2SC1573 and 2SA879 Unit: mm 5.9± 0.2 4.9± 0.2 q q High collector to emitter voltage VCEO. High transition frequency fT. +0.3 +0.2 Parameter Collector to base voltage 2SC1573 2SC1573A 2SC1573B 2SC1573 Collector to emitter voltage 2SC1573A 2SC1573B Symbol Ratings 250 Unit 2.54± 0.15 13.5± 0.5 VCBO 300 400 200 V 0.7–0.2 s Absolute Maximum Ratings (Ta=25˚C) 0.7± 0.1 8.6± 0.2 s Features VCEO VEBO ICP IC PC Tj Tstg 300 400 V 0.45–0.1 1.27 1.27 0.45–0.1 +0.2 Peak collector current Collector current Collector power dissipation Junction temperature Storage temperature 100 [ ... ]

C1573B PDF Datasheet Download