The 559-0203-001F 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 unit features a 0.250" (6.35 mm) mounting hole with a maximum panel thickness of 0.031" to 0.062" (0.787 to 1.57 mm), and is housed in black UL94V-0 flammable-rated material. The LED operates at 12V DC with an integral resistor (no external resistor required), with a typical forward current of 13 mA and forward voltage of 12V, offering a viewing angle of 60° and operating temperature range of -20°C to +85°C. The device includes straight terminals for wire wrapping or 24 AWG lead wire connections, available in 6" or 14" lengths in standard or PVC-free configurations. Common applications include fan tray assemblies, data-center infrastructure (servers and storage), wireless infrastructure, electronic test and measurement instruments, and hand-held devices.