| 321841 | BPW77NB | Photo Detectors | Vishay |
| 321842 | BPW78 | Silicon NPN Phototransistor | Vishay |
| 321843 | BPW78A | Silicon NPN Phototransistor | Vishay |
| 321844 | BPW78B | Silicon NPN Phototransistor | Vishay |
| 321845 | BPW82 | Silicon PIN Photodiode | Vishay |
| 321846 | BPW83 | Silicon PIN Photodiode | Vishay |
| 321847 | BPW85 | Silicon NPN Phototransistor | Vishay |
| 321848 | BPW85A | Photo Detectors | Vishay |
| 321849 | BPW85B | Photo Detectors | Vishay |
| 321850 | BPW85C | Photo Detectors | Vishay |
| 321851 | BPW96 | Silicon NPN Phototransistor | Vishay |
| 321852 | BPW96A | Photo Detectors | Vishay |
| 321853 | BPW96B | Photo Detectors | Vishay |
| 321854 | BPW96C | Photo Detectors | Vishay |
| 321855 | BPW97 | Silicon PIN Photodiode | Vishay |
| 321856 | BPX25 | Phototransistor | FERRANTI |
| 321857 | BPX25 | Phototransistor NPN | mble |
| 321858 | BPX25 | Phototransistor | Mullard |
| 321859 | BPX25A | Phototransistor | Mullard |
|
| 321860 | BPX28 | Silicon photo-electronic control unit containing: one silicon photo element, one silicon NPN transistor and two silicon diodes, suitable for direct relay driving | AEG-TELEFUNKEN |
| 321861 | BPX29 | Phototransistor | FERRANTI |
| 321862 | BPX29 | Phototransistor NPN | mble |
| 321863 | BPX29 | Phototransistor | Mullard |
| 321864 | BPX29A | Phototransistor | Mullard |
| 321865 | BPX33 | Solar cells | mble |
| 321866 | BPX34 | Silicon P/N photo elements line containing 50 integrated elements for readout array with fine scanning | AEG-TELEFUNKEN |
| 321867 | BPX37 | Silicon NPN epitaxial planar phototransistor | AEG-TELEFUNKEN |
| 321868 | BPX38 | NPN-Silizium-Fototransistor Silicon NPN Phototransistor | Siemens |
| 321869 | BPX38 | PHOTOTRANSISTOR | Siemens |
| 321870 | BPX38-2 | NPN-Silizium-Fototransistor Silicon NPN Phototransistor | Siemens |
| 321871 | BPX38-3 | NPN-Silizium-Fototransistor Silicon NPN Phototransistor | Siemens |
| 321872 | BPX38-4 | Silicon NPN Phototransistor | Vishay |
| 321873 | BPX38-5 | NPN-Silizium-Fototransistor Silicon NPN Phototransistor | Siemens |
| 321874 | BPX38-5 | Silicon NPN Phototransistor | Vishay |
| 321875 | BPX38-6 | Silicon NPN Phototransistor | Vishay |
| 321876 | BPX40 | Photodiode | mble |
| 321877 | BPX40 | Photodiode | Mullard |
| 321878 | BPX41 | Photodiode | mble |
| 321879 | BPX41 | Photodiode | Mullard |
| 321880 | BPX42 | Photodiode | mble |
