Datasheet Fairchild H21B
| Manufacturer | Fairchild |
| Series | H21B |
Photodarlington Optical Interrupter Switch
Datasheets
Datasheet H21B1, H21B2, H21B3
PDF, 393 Kb, Language: en, File uploaded: Sep 20, 2021, Pages: 6
Photodarlington Optical Interrupter Switch
Photodarlington Optical Interrupter Switch
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Detailed Description
The H21B1, H21B2 and H21B3 consist of a gallium arsenide infrared emitting diode coupled with a silicon photodarlington 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.
