OSB5YUA1K4A is a OptoSupply Lot 5Y Type 4 Ultra-Absorbing, High-Efficiency 850nm Emitting Diode. It features a low forward voltage of just 0.5V at 100 mA, high power output of 200 mW, and an IR wavelength of 850nm. This device is suitable for a variety of applications, such as infrared illuminators, night vision, and image sensing. It is RoHS compliant, highly reliable, and cost-effective.