| Manufacturer | Part Number | Description |
|---|---|---|
Panasonic
| ON2173 | Reflective photosensor |
AMI
| ON21 | CMOS Gate Array |
|
Panasonic
| ON2152 | Reflective photosensor |
|
Panasonic
| ON2170 | Reflective Photosensor |
|
Panasonic
| ON2179 | Reflective photosensor |
|
Panasonic
| ON2175 | Reflective Photosensor |
| Unknown Manufacturer | ON21 | OR / NAND circuit providing the logical function Q = NOT |
