| 4N28 | 
                                        Lite-On | 
                                        1,892 | 
                                        Transistor Output Optocouplers PTR 10%, 0.5KV | 
                                    
                                                                    
                                        | 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 | 
                                        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 |