The 521-9499F is a red 2mm x 5mm rectangular discrete LED featuring a tinted, diffused lens design. It delivers a typical luminous intensity of 7.4 mcd at 20 mA forward current with a peak wavelength of 635 nm and a viewing angle of 140°. The device has a maximum power dissipation of 100 mW, forward current rating of 30 mA, and peak current of 120 mA (1 ms pulse width), with an operating temperature range of -55°C to +100°C. This compact LED is ideal for indicator applications, status displays, and general-purpose signaling in consumer electronics and industrial equipment where reliable red illumination is required.