The 559-0203-023F is a snap-in LED panel mount indicator featuring a green LED with 12V integral resistor, designed for applications requiring reliable visual indication in electronic test and measurement instruments, communications testing equipment, and hand-held devices. This indicator utilizes InGaN LED technology with a peak wavelength of 565 nm, typical intensity of 8 mcd, and forward voltage of 12V at 13 mA forward current, providing consistent brightness across a 60° viewing angle. The device features a 0.250" (6.35 mm) mounting hole with black UL94V-0 flammable housing, straight terminals for wire wrapping or 24 AWG lead wire connections, and operates reliably over a temperature range of -20°C to +85°C. With its compact dimensions, RoHS compliance, and integral resistor design requiring no external components, this indicator is ideal for panel-mounted status indication in data-center infrastructure, fan tray assemblies, and next-generation wireless infrastructure applications.