This part is a kind of semiconductor called APA102.
Function of this product has LED Chip.
Manufacturers : Greeled Electronic
Image and pinout :

Some of the text within the PDF file :
● APA102 chip built in SMD5050 www.gree-leds.com Features and Benefits z Intelligent reverse connect protection, the power supply reverse connection does not damage the IC. z The control circuit and the LED share the only power source. z Control circuit and RGB chip are integrated in a package of 5050 components, form a complete control of pixel point. z Built-in signal reshaping circuit, after wave reshaping to the next driver, ensure wave-form distortion not accumulate. z Built-in electric reset circuit and power lost reset circuit. z Each pixel of the three primary color can achieve 256 brightness display, completed 16777216 color full color display, and scan frequency not less than 400Hz/s. z Cascading port transmission signal by (DAT CLK) two line. z Any two point the distance les [ ... ]
APA102 PDF Datasheet Download
