The Kingbright SC10-21SURKWA is an LED (Light Emitting Diode) suitable for backlighting, panel indications, and other signal uses. It features Kingbright's patented T-1 3/4 (U.S.)/5mm (metric) rectangular package and reliable process technology. It also has a bright, high-efficacy, diffused lens surface with a viewing angle of 100°. The SC10-21SURKWA has a forward voltage of 2.1-2.4 Volt and a luminous intensity of 2,000 - 2,400 mcd (at 20mA). Its luminous intensity is decreased at a higher current, reducing its reliability. The SC10-21SURKWA is RoHS compliant and UL listed for safety, making it an ideal choice for all your indoor indicators.