XNOVA Cube MP-1616 (3V) Illumination LEDs Luminus Devices XNOVA Cube™ MP-1616 (3V) Illumination LEDs are unique, innovative devices designed for illumination applications where a wide viewing angle, compact footprint, and precise color control are essential features. XNOVA Cube LEDs are offered in a compact, 1.6mm x 1.6mm SMD package.