The AA3021-IR22 is a two-lead Through Hole LED package from Kingbright. It has a standard 4-pin design, with a height of 3.3 mm, and a lead spread of 2.54 mm. This part is an infrared LED, with an average forward current of 20 mA and a forward voltage of 1.5 to 1.9 volts. It has a viewing angle of 40°, a continuous wave operation at 20 mA, and a peak pulsed current at 100 mA. This LED can be used in a wide range of applications such as alarm systems, optical signaling, security systems, and night vision systems.