This part is a kind of semiconductor called SMD5050.

Function of this product has LED.

Manufacturers : Wayjun

Image and pinout :

Some of the text within the PDF file :

5050 SMD LED Applications ● Signal & Symbol Indicators. ● Illuminations(illuminated advertising & general lighting). ● Amusement Machines. ● LCD Backlighting. ● Indoor & Outdoor Displays. ● Automobile Interior Lighting. Edition: V1.3 Date: Sep 2011 5050 SMD LED 1. RED 5050 SMD LED PART NO LED-5050RVC Chip Material AlGaInP Emitted Color Red ■ Lens Color WATER CLEAR Absolute Maximum Ratings (Ta = 25℃) Items Power Dissipation Forward Current(DC) Peak Forward Current * Reverse Voltage Operation Temperature Storage Temperature Soldering Temperature *Pulse width≦0.1msec duty≦1/10 Symbol PD IF IFP VR Topr Tstg Tsol Absolute maximum Rating 300 150 300 5 -40 ~ +95 -40 ~ +100 Reflow Soldering:240℃/10sec Hand Soldering: 350℃/3sec Unit mW mA mA V ℃ ℃ Typical Electrical [ ... ]

SMD5050 PDF Datasheet Download