The Osram Opto SFH 4053 is an infrared (IR) emitter with a peak wavelength of 860nm and a forward current of 70mA. It is a 0402 package size, making it suitable for use in small, compact applications. It is designed for use in a wide range of applications, including optical data transmission, medical diagnostics, and industrial automation. It features a high radiant intensity, low power consumption, and a wide viewing angle. It is also RoHS compliant and has a long lifetime of up to 10,000 hours. The SFH 4053 is suitable for use in a variety of applications, including optical data transmission, medical diagnostics, and industrial automation.