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Optoisolators, also referred to as optical couplers, photocouplers, and optocouplers, are devices that use light to transmit electrical signals to isolated circuits. Output types include logic, transistor, photovoltaic, triac, and SCR.
| Select products | Mfr | Description | Package | Supplier Device Package | Mounting Type | Series | Operating Temperature |
|---|---|---|---|---|---|---|---|
![]() FOD8173S $0.47 | onsemi | OPTOISOLATOR 5KV 1CH TRANS 4-SMD | Tube | 4-SMD | Surface Mount | - | -55°C ~ 110°C |
![]() FOD8173S $0.14 | Fairchild Semiconductor | OPTOISOLATOR 5KV 1CH TRANS 4-SMD | Bulk | 4-SMD | Surface Mount | - | -55°C ~ 110°C |
![]() FOD8173SD $0.09 | Fairchild Semiconductor | OPTOISOLATOR 5KV 1CH TRANS 4-SMD | Bulk | 4-SMD | Surface Mount | - | -55°C ~ 110°C |
![]() FOD8173SD $0.37 | onsemi | OPTOISOLATOR 5KV 1CH TRANS 4-SMD | Tape & Reel (TR),Cut Tape (CT) | 4-SMD | Surface Mount | - | -55°C ~ 110°C |
![]() FOD8173T $1.59 | onsemi | OPTOISOLTR 5KV PUSH PULL 6-SOIC | Tube | 6-SOIC | Surface Mount | - | -40°C ~ 100°C |
![]() FOD8173TR2 $1.64 | onsemi | OPTOISOLTR 5KV PUSH PULL 6-SOIC | Tape & Reel (TR),Cut Tape (CT) | 6-SOIC | Surface Mount | - | -40°C ~ 100°C |
![]() FOD817A $0.46 | onsemi | OPTOISOLATOR 5KV 1CH TRANS 4-DIP | Tube | 4-DIP | Through Hole | - | -55°C ~ 110°C |
![]() FOD817A300 $0.42 | onsemi | OPTOISOLATOR 5KV 1CH TRANS 4-DIP | Tube | 4-DIP | Through Hole | - | -55°C ~ 110°C |

Choose tactile switches by operating force, travel, actuator height, footprint and lifetime. Check debounce, sealing and the assembled button mechanism.
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