The Optosupply OSR50402C1E is a Silicon PIN Photodiode. It is used in the detection and measurement of optical radiation. It features a reverse voltage of 20V, a peak sensitivity wavelength of 940 nm, a capacitance of 0.22nF, and an angle of view of 20°. It is an epoxy-sealed, through-hole package, making it suitable for reflow and wave soldering.