This a new 8x8 RGB LED matrix, also compatible with Rainbowduino. Compare to the old 8x8 RGB LED matrix, this new LED matrix features square LED dot and its only half thickness. Features: Fully compatible with Rainbowduino Full color RGB variation Square LED point source Ultrathin Specification： Dot Size: 5.0mm Pixel Array: 8×8 Luminous Intensity: 40mcd Package Dimension: 60mm×60mm Reverse Voltage(Max): 5V Forward Current(Max): 25mA Peak Forward Current(Max): 100mA Power Dissipation(Max): 100mW Operating Temperature(Max):-35~+85℃ Storage Temperature(Max): -35~+85℃ Lead Solder Temperature(Max): 260℃ for 5 seconds Compatibility： Rainbowduino LED driver platform - Atmega 328 Document: Datasheet