This part is a kind of semiconductor called UX-C2B.

Function of this product has High Voltage Power Diodes.

Manufacturers : HV Component Associates

Image and pinout :

Some of the text within the PDF file :

SERIES HVR-1X UX-FOB UX-C2B 8, 10, 12 K Volts 500 mAmps to 35 ns Recovery High Voltage Power Diodes Standard and Ultra-Fast Recovery HVCA Number UX-C2B Repetitive Peak Reverse Voltage VRRM V(Volts) Avg. Forward Current Max. IFAVM @ 55oC mA (milliAmps) Max. Forward Voltage Drop VF @ IF V(Volts) Max. Reverse Current IR @ VRRM @ 25OC µA (microAmps) UX – Ultra Fast Recovery 35 nsec High Current Diode 8000 500 14.0 0.5 Max. Surge Current IFSM (8.3 ms) A (Amps) 20 UX-FOB UX – Fast Recovery 50 nsec High Current Diode 8000 500 14.0 0.5 20 HVR-1X-4 HVR-1X-3 HVR-1X – Standard Recovery High Current Diodes 10000 500 10.0 0.3 12000 500 11.0 0.3 30 30 HV Component Mail: PO Box 2245, Farmingdale, NJ 07727 Fax: (732) 938-4451 http://www.hvca.com HV Component Associat [ ... ]

UX-C2B PDF Datasheet Download