This part is a kind of semiconductor called 1N1184A.
Function of this product has (1N1183A - 1N1190AR) Silicon Standard Recovery Diode.
Manufacturers : America Semiconductor
Image and pinout :

Some of the text within the PDF file :
Free Datasheet http://www.net/ Free Datasheet http://www.net/ [ ... ]
1N1184A PDF Datasheet Download
