Phototransistor Optical Interrupter Switch
| Part number | H21A5 |
|---|---|
| Manufacturer | Fairchild (now onsemi) |
| File Size | 101.11 KB |
| Description | PHOTOTRANSISTOR OPTICAL INTERRUPTER SWITCH |
| Datasheet | H21A5_FairchildSemiconductor.pdf |
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The H21A series are 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.
| Brand Logo | Part Number | Description | Other Manufacturers |
|---|---|---|---|
 |
H21A5 | SOLTTED OPTICAL SWITCH | QT Optoelectronics |
See all Fairchild (now onsemi) datasheets
| Part Number | Description |
|---|---|
| H21A | PHOTOTRANSISTOR OPTICAL INTERRUPTER SWITCH |
| H21A1 | PHOTOTRANSISTOR OPTICAL INTERRUPTER SWITCH |
| H21A2 | PHOTOTRANSISTOR OPTICAL INTERRUPTER SWITCH |
| H21A3 | PHOTOTRANSISTOR OPTICAL INTERRUPTER SWITCH |
| H21A4 | PHOTOTRANSISTOR OPTICAL INTERRUPTER SWITCH |
| H21A6 | PHOTOTRANSISTOR OPTICAL INTERRUPTER SWITCH |
| H21B1 | PHOTODARLINGTON OPTICAL INTERRUPTER SWITCH |
| H21B2 | PHOTODARLINGTON OPTICAL INTERRUPTER SWITCH |
| H21B3 | PHOTODARLINGTON OPTICAL INTERRUPTER SWITCH |
| H21B4 | PHOTODARLINGTON OPTICAL INTERRUPTER SWITCH |
