LC37R Red 8mm high common cathode LED Display by Ledtech. a cheap and cheerful multi purpose Red faced, red 7 segment LED display. 8mm high x 5.5mm wide (slight slope) character with two decimalpoints. housed in a white plastic package 19 x 10mm x 6mm deep (excluding pins) Pins fit std DIP IC socket. est. Vf-1.9v 20ma max RoHS compliant: presume not.