This part is a kind of semiconductor called EL84.

Function of this product has A.F. Output Pentode.

Manufacturers : NXP

Image and pinout :

Some of the text within the PDF file :

page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 EL84 sheet 1 2 3 4 5 6 7 8 9 10 11 12 13 14 FP date 1969.12 1969.01 1969.01 1969.01 1969.01 1969.01 1969.01 1969.01 1969.01 1969.01 1969.01 1969.01 1969.01 1969.01 1999.03.20 [ ... ]

EL84 PDF Datasheet Download