| BPX 89 | 
                            OSRAM Opto Semiconductors Inc. | 
                            PHOTOTRANSISTOR ARRAY NPN MINI | 
                            6-SDIP (0.071", 1.80mm) | 
                            2,934 | 
                          
                                                    
                            | OP603TXV | 
                            TT Electronics/Optek Technology | 
                            PHOTOTRNS SILCN NPN HERMETC PILL | 
                            Pill | 
                            7,884 | 
                          
                                                    
                            | PNZ155 | 
                            Panasonic Electronic Components | 
                            NPN PHOTOTRANS 800NM SIDE VIEW | 
                            Side View | 
                            6,228 | 
                          
                                                    
                            | PT550 | 
                            Sharp Microelectronics | 
                            PHOTO TRANS CLR LEN 800NM TO-18 | 
                            TO-206AA, TO-18-3 Metal Can | 
                            6,912 | 
                          
                                                    
                            | OP572 | 
                            TT Electronics/Optek Technology | 
                            PHOTOTRANSISTOR NPN 935NM YOKE | 
                            2-SMD, Yoke Bend | 
                            6,858 | 
                          
                                                    
                            | QSD733C | 
                            Fairchild/ON Semiconductor | 
                            PHOTODARLINGTON IR 30V TO-18 | 
                            TO-18-2 | 
                            2,754 | 
                          
                                                    
                            | OP538FA | 
                            TT Electronics/Optek Technology | 
                            PHOTODARL SILCN NPN FLAT SD LOOK | 
                            Radial | 
                            4,518 | 
                          
                                                    
                            | OP538FC | 
                            TT Electronics/Optek Technology | 
                            PHOTODARL SILCN NPN FLAT SD LOOK | 
                            Radial | 
                            4,266 | 
                          
                                                    
                            | OP770B | 
                            TT Electronics/Optek Technology | 
                            PHOTOTRNS NPN W/CAP SIDE LOOK | 
                            Radial | 
                            2,610 | 
                          
                                                    
                            | OP500 | 
                            TT Electronics/Optek Technology | 
                            PHOTOTRANSISTOR NPN CLR 0805 SMD | 
                            0805 (2012 Metric) | 
                            6,984 |