PX00S1 is a large area GaAs PD00S1 photodiode chip packaged in an 8-pin TO-5 header and capped with a flat window TO-cap. The topside illuminated p-i-n photodiode structure is optimized for monitoring applications. It offers an excellent responsivity in the wavelength region from 800 to 860 nm.

PX00M3 is a four-quadrant PD00M4 photodiode packaged in a TO-5 header and capped with a lensed TO-cap.