Super-bright red LEDs in four sizes. The LEDs fit the appropriate panel mounting clips. The cathode is denoted by the flat on the body & by the short lead. The LEDs have a diffused lens giving a wide viewing angle. Specifications Forward voltage at IF 20m A1.8 V Forward current max 30m A Reverse voltage max 5VPower dissipation max 100m W Peak wavelength 660nm Case size dia.3mm 5mm 8mm 10mm Light output typical at IF 20m A80mcd 150mcd 200mcd 200mcd Viewing angle 100120140140