This part is a kind of semiconductor called C2694.
Function of this product has 2SC2694.
Manufacturers : Mitsubishi Electric Semiconductor
Image and pinout :
Some of the text within the PDF file :
C2694 is a silicon NPN epitaxial planar type transistor designed for RF power amplifiers in VHF band mobile radio applications.
1. 50 to 60 watts output power amplifiers in VHF band mobile radio applications.
2. Emitter ballasted construction and gold metallization for high reliability and good performances.
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C2694 PDF Datasheet Download