| 4N26FM | Fairchild Semiconductor | 6-Pin DIP Package Phototransistor Output Optocoupler |
| 4N26FR2M | Fairchild Semiconductor | 6-Pin DIP Package Phototransistor Output Optocoupler |
| 4N26FR2VM | Fairchild Semiconductor | 6-Pin DIP Package Phototransistor Output Optocoupler |
| 4N26FVM | Fairchild Semiconductor | 6-Pin DIP Package Phototransistor Output Optocoupler |
| 4N26M | Fairchild Semiconductor | 6-Pin DIP Package Phototransistor Output Optocoupler |
| 4N26S | Fairchild Semiconductor | 6-Pin DIP Package Phototransistor Output Optocoupler |
| 4N26SD | Fairchild Semiconductor | 6-Pin DIP Package Phototransistor Output Optocoupler |
| 4N26SM | Fairchild Semiconductor | 6-Pin DIP Package Phototransistor Output Optocoupler |
| 4N26SR2M | Fairchild Semiconductor | 6-Pin DIP Package Phototransistor Output Optocoupler |
| 4N26SR2VM | Fairchild Semiconductor | 6-Pin DIP Package Phototransistor Output Optocoupler |
| 4N26SVM | Fairchild Semiconductor | 6-Pin DIP Package Phototransistor Output Optocoupler |
| 4N26TM | Fairchild Semiconductor | 6-Pin DIP Package Phototransistor Output Optocoupler |
| 4N26TVM | Fairchild Semiconductor | 6-Pin DIP Package Phototransistor Output Optocoupler |
| 4N26VM | Fairchild Semiconductor | 6-Pin DIP Package Phototransistor Output Optocoupler |
| 4N26W | Fairchild Semiconductor | 6-Pin DIP Package Phototransistor Output Optocoupler |
| 4N27 | Fairchild Semiconductor | 6-Pin DIP Package Phototransistor Output Optocoupler |
| 4N27 | Vishay | Optocouplers |
| 4N27-M | Fairchild Semiconductor | 6-Pin DIP Package Phototransistor Output Optocoupler |
| 4N27-X007 | Vishay | Optocouplers |
| 4N27-X009 | Vishay | Optocouplers |