The RPM-22PB from ROHM Semiconductor is a Phototransistor that has a peak sensitivity wavelength of 800 nm. It has a light current of 0.48 - 1.94 mA, a dark current of up to 0.5 μA and a collector-emitter saturation voltage of up to 0.4 V. This phototransistor has a Ø1.5 lens, half-angle of ±32 degrees and a response time of 10 μs. It is available in a package that measures 4.7 x 4.6 x 2.5 mm and is ideal for optical control equipment and receiver for sensor applications.