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phototransistor

TLP521 Optocoupler
TLP521 Optocoupler

TLP521 Series Optocoupler with GaAs IR-LED & Photo-Transistor

The Toshiba TLP521-1 consists of a photo-transistor optically coupled to a gallium arsenide infrared emitter diode.
4N35 IC
4N35 Optocoupler IC

EL4N35 Optocoupler IC

EL4N35 Phototransistor Optocoupler IC comes as a dual inline package and has 6 pins.
EL817C Optocoupler/Phototransistor IC
EL817C Optocoupler/Phototransistor IC

EL817C Optocoupler/Phototransistor IC

EL817C IC is a popular optocoupler IC. The IC like any other optocoupler consists of an infrared emitting diode which is optically coupled to a phototransistor detector.  
MCT2E - Phototransistor Optocoupler IC
MCT2E - Phototransistor Optocoupler IC

MCT2E - Phototransistor Optocoupler IC

MCT2E Pin Configuration Pin Number Pin Name Description 1