The Wurth Elektronik LED Indication - Discrete 151051YS04000 is a 5mm round LED with a yellow diffused lens. It is a through-hole mounted LED with a wide viewing angle of 120°. It has a forward voltage of 2.1V and a forward current of 20mA. It is suitable for a wide range of applications, including automotive, industrial, and consumer electronics. It is RoHS compliant and has a long life expectancy of up to 100,000 hours. It is also resistant to shock and vibration. The LED is suitable for use in a variety of lighting applications, including backlighting, indicator lights, and status lights. It is also suitable for use in a variety of electronic devices, such as computers, phones, and tablets.