DESCRIPTION
The HOA1872 series consists of an infrared emitting diode facing an NPN silicon phototransistor (HOA1872-001, -002, -011, -012) or photodarlington (HOA1872-003, -013) encased in a black thermoplastic housing. Detector switching takes place wherever an opaque object passes through the slot between emitter and detector. The HOA1872-001, -002 and -003 have a 0.050 in.(1.27 mm)dia. detector aperture and employ metal can packaged components, while the HOA1872-011, -012, and -013 have a 0.060 in.(1.52 mm) dia. detector aperture and contain plastic molded components. For additional component information see SE1450, SD1440, SD1410, SEP8506, SDP8406, and SDP8106.

FEATURES
• Choice of phototransistor or photodarlington output
• Three sensitivity ranges
• Choice of metal can package or plastic molded components
• 0.100 in.(2.54 mm) slot width