LF-3011 Single Digit LED Numeric Displays ROHM Semiconductor LF-3011 Single Digit LED Numeric Displays are available in an 8mm letter height with ROHM's original structure that realizes reflow soldering. This ROHM Semiconductor LF-3011A/K is a common cathode red LED numeric display. The LED display features a 650nm wavelength, 320mW power dissipation, 10mcd luminous intensity, and 10mA forward current. This LED display operates from a -25°C to 75°C temperature range and supports a -30°C to 85°C storage temperature range.