The WS2812B-MINI-X1 with SMD-4,3.5x3.7mm Light Emitting Diode (LED) ROHS manufactured by Worldsemi is an integrated circuit with three separate output channels (red, green, and blue) for making digital RGB pixel lighting displays. It incorporates the latest WS2812B chip technology to provide high performance RGB LED with low current, low voltage, and wide viewing angle. The design features a special shape with four pins for easy soldering and mounting. This LED is RoHS compliant, and its small size and efficient design make it suitable for a variety of LED lighting applications, including decorative, automotive, multimedia, and other industrial applications.