| 4N28 | Vishay Semiconductors | 3,972 | Transistor Output Optocouplers Phototransistor Out | 
                                                                    
                                        | 4N28 | Lite-On | 1,892 | Transistor Output Optocouplers PTR 10%, 0.5KV | 
                                                                    
                                        | 4N28 | Vishay Semiconductors | 3,972 | Transistor Output Optocouplers Phototransistor Out | 
                                                                    
                                        | 4N28-X001 | Vishay Semiconductors | 1,980 | Transistor Output Optocouplers Phototransistor Out Single CTR>10% | 
                                                                    
                                        | 4N28-X001 | Vishay Semiconductors | 1,980 | Transistor Output Optocouplers Phototransistor Out Single CTR>10% | 
                                                                    
                                        | 4N28-X009 | Vishay Semiconductors | 0 | Transistor Output Optocouplers Phototransistor Out Single CTR>10% | 
                                                                    
                                        | 4N28-X009 | Vishay Semiconductors | 0 | Transistor Output Optocouplers Phototransistor Out Single CTR>10% | 
                                                                    
                                        | 4N28-X009T | Vishay Semiconductors | 0 | Transistor Output Optocouplers Phototransistor Out Single CTR>10% | 
                                                                    
                                        | 4N28-X009T | Vishay Semiconductors | 0 | Transistor Output Optocouplers Phototransistor Out Single CTR>10% | 
                                                                    
                                        | 4N28M | onsemi / Fairchild | 3,488 | Transistor Output Optocouplers Optocoupler Phototransistor | 
                                                                    
                                        | 4N28M | Lite-On | 883 | Transistor Output Optocouplers PTR 20%, 0.5KV | 
                                                                    
                                        | 4N28M | onsemi / Fairchild | 3,488 | Transistor Output Optocouplers Optocoupler Phototransistor | 
                                                                    
                                        | 4N28M | Lite-On | 883 | Transistor Output Optocouplers PTR 20%, 0.5KV | 
                                                                    
                                        | 4N28S | Lite-On | 0 | Transistor Output Optocouplers PTR 10%, 0.5KV | 
                                                                    
                                        | 4N28S | Lite-On | 0 | Transistor Output Optocouplers PTR 10%, 0.5KV |