- QSC133.C4A0
- Fairchild Semiconductor Corporation
- PHOTO DARLINGTON DETECTOR
- QSC133.C4R0
- Fairchild Semiconductor Corporation
- PHOTO DARLINGTON DETECTOR
- QSC133.C6A0
- Fairchild Semiconductor Corporation
- PHOTO DARLINGTON DETECTOR
- QSC133.C6R0
- Fairchild Semiconductor Corporation
- PHOTO DARLINGTON DETECTOR
- QSC133
- Qt Optoelectronics
- PLASTIC SILICON PHOTODARLINGTON