The 559-0202-001F is a snap-in LED panel mount indicator from Dialight's 559 series, designed for high-brightness applications in industrial and data-center environments. This green LED indicator features a peak wavelength of 565 nm, typical intensity of 8 mcd, and forward voltage of 5V with an integral resistor, eliminating the need for external current-limiting components. The device accommodates a 0.250" (6.35 mm) mounting hole with panel thickness ranging from 0.031" to 0.062", operates reliably from -20°C to +85°C, and is housed in black UL94V-0 flammable-rated plastic. Electrical connections are provided via straight terminals for wire wrapping or 24 AWG lead wire (available in 6" or 14" lengths), and the indicator is RoHS compliant. Common applications include fan tray assemblies, data-center infrastructure (servers and storage), wireless infrastructure, electronic test and measurement instruments, and hand-held devices.