551-0407F is a red diffused LED indicator designed for general-purpose signaling and status indication applications. It features a luminous intensity of 2.5 mcd at 10 mA forward current, with a peak wavelength of 635 nm typical and a 60-degree viewing angle. The LED operates with a forward voltage of 8.7V at 10 mA and 18V at 50 mA, with a maximum continuous forward current of 30 mA and peak forward current of 90 mA. The device is housed in a 3mm diffused lens package with dimensions of 0.095" (A), 0.018" (B), 0.016" (C), and 0.088" (D), and operates reliably across a temperature range of -55°C to +100°C. This LED is ideal for panel-mount indicator applications, control systems, and electronic equipment requiring compact, reliable visual feedback with low power consumption.