HDSP-A101 7 Segment LED Display, Red, 20 mA, 1.8 V, 3.6 mcd. The HDSP-A101 is a low current Seven Segment Display designed for applications requiring low power consumption. The display is tested and selected for their excellent low current characteristics to ensure that the segments are matched at low currents. Drive currents is as low as 1mA per segment.