This part is a kind of semiconductor called BAT14-014.

Function of this product has Silicon Schottky Diodes (Medium barrier diodes for detector and mixer applications Hermetical ceramic package).

Manufacturers : Siemens Semiconductor Group

Image and pinout :

Some of the text within the PDF file :

Silicon Schottky Diodes q q q BAT 14- … 4 Medium barrier diodes for detector and mixer applications Hermetical ceramic package For frequencies up to 40 GHz ESD: Electrostatic discharge sensitive device, observe handling precautions! Type BAT 14-014 BAT 14-034 BAT 14-044 BAT 14-064 BAT 14-074 BAT 14-094 BAT 14-104 BAT 14-114 BAT 14-124 Frequency band (GHz) … 4 (S) … 8 (C) … 12 (X) … 18 (Ku) … 40 (Ka) Ordering Code Q62702-D1005 Q62702-D1019 Q62702-D1026 Q62702-D1036 Q62702-D1041 Q62702-D1051 Q62702-D1056 Q62702-D1061 Q62702-D1066 Pin Configuration Cathode: black dot, heat sink Package1) T1 Maximum Ratings Parameter Reverse voltage Forward current BAT 14-014 … BAT 14-064 BAT 14-074 … BAT 74-124 Junction temperature Storage temperature range Operating temperature range Symb [ ... ]

BAT14-014 PDF Datasheet Download