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Product specifications
H21A1 is an optical sensor consists of gallium arsenide infrared emitting diode which is coupled with silicon phototransistor in a plastic housing. the sensor design has features like optimizing the mechanical resolution coupling efficiency ambient light rejection cost and reliability. The housing has a gap which provides a means of interrupting signal with an opaque material and switches the output from ON to OFF state.
Specification:
Sensing distance: 3mm
Sensing method: transmissive
Output configurations: phototransistor
Maximum emitter collector breakdown voltage: 30V
Maximum DC forward current: 50mA
Maximum collector current: 20mA
Response time: 8-15�
Mounting type: through hole
Package type: slotted
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