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Fairchild H21A1 Optocoupler (MIL) 30V
Fairchild H21A1 Optocoupler (MIL) 30V
5980-01-005-0295
The H21A1 consists of a gallium arsenide infrared emitting diode coupled with a silicon phototransistor in a plastic housing. The packaging system is designed to optimize the mechanical resolution, coupling efficiency, ambient light rejection, cost and reliability. The gap in the housing provides a means of interrupting the signal with an opaque material, switching the output from an “ON” to an “OFF” state.
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