| 121121 | 4N27SV | GENERAL PURPOSE 6-PIN PHOTOTRANSISTOR OPTOCOUPLERS | Fairchild Semiconductor |
| 121122 | 4N27SVM | 6-Pin DIP Package Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 121123 | 4N27T | GENERAL PURPOSE 6-PIN PHOTOTRANSISTOR OPTOCOUPLERS | Fairchild Semiconductor |
| 121124 | 4N27TM | 6-Pin DIP Package Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 121125 | 4N27TV | GENERAL PURPOSE 6-PIN PHOTOTRANSISTOR OPTOCOUPLERS | Fairchild Semiconductor |
| 121126 | 4N27TVM | 6-Pin DIP Package Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 121127 | 4N27V | GENERAL PURPOSE 6-PIN PHOTOTRANSISTOR OPTOCOUPLERS | Fairchild Semiconductor |
| 121128 | 4N27V | GENERAL PURPOSE 6-PIN PHOTOTRANSISTOR OPTOCOUPLERS | Fairchild Semiconductor |
| 121129 | 4N27VM | 6-Pin DIP Package Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 121130 | 4N27W | 6-Pin DIP Package Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 121131 | 4N28 | GENERAL PURPOSE 6-PIN PHOTOTRANSISTOR OPTOCOUPLERS | Fairchild Semiconductor |
| 121132 | 4N28 | 6-Pin DIP Optoisolators Transistor Output | Motorola |
| 121133 | 4N28 | GAAS INFRARED EMITTING DIODE | QT Optoelectronics |
| 121134 | 4N28 | Optoelectronic coupling element (Optocoupler) | TELEFUNKEN |
| 121135 | 4N28 | Optocoupler 6-PDIP | Texas Instruments |
| 121136 | 4N28 | Optocoupler, Phototransistor Output, With Base Connection | Vishay |
| 121137 | 4N28(SHORT) | Photocoupler GaAs IRed & Photo .Transistor | TOSHIBA |
| 121138 | 4N28-M | GENERAL PURPOSE 6-PIN PHOTOTRANSISTOR OPTOCOUPLERS | Fairchild Semiconductor |
| 121139 | 4N28-V | GENERAL PURPOSE TYPE PHOTOCOUPLER | Lite-On Technology Corporation |
|
| 121140 | 4N28-X009 | Optocouplers | Vishay |
| 121141 | 4N28.300 | GENERAL PURPOSE 6-PIN PHOTOTRANSISTOR OPTOCOUPLERS | Fairchild Semiconductor |
| 121142 | 4N28.300W | GENERAL PURPOSE 6-PIN PHOTOTRANSISTOR OPTOCOUPLERS | Fairchild Semiconductor |
| 121143 | 4N28.3S | GENERAL PURPOSE 6-PIN PHOTOTRANSISTOR OPTOCOUPLERS | Fairchild Semiconductor |
| 121144 | 4N28.3SD | GENERAL PURPOSE 6-PIN PHOTOTRANSISTOR OPTOCOUPLERS | Fairchild Semiconductor |
| 121145 | 4N28.S | GENERAL PURPOSE 6-PIN PHOTOTRANSISTOR OPTOCOUPLERS | Fairchild Semiconductor |
| 121146 | 4N28.SD | GENERAL PURPOSE 6-PIN PHOTOTRANSISTOR OPTOCOUPLERS | Fairchild Semiconductor |
| 121147 | 4N28.W | GENERAL PURPOSE 6-PIN PHOTOTRANSISTOR OPTOCOUPLERS | Fairchild Semiconductor |
| 121148 | 4N28300 | 6-Pin DIP Package Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 121149 | 4N28300W | 6-Pin DIP Package Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 121150 | 4N283S | 6-Pin DIP Package Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 121151 | 4N283SD | 6-Pin DIP Package Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 121152 | 4N28A | PHOTO TRANSISTOR (AC LINE/DIGITAL LOGIC ISOLATOR) | TOSHIBA |
| 121153 | 4N28FM | 6-Pin DIP Package Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 121154 | 4N28FR2M | 6-Pin DIP Package Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 121155 | 4N28FR2VM | 6-Pin DIP Package Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 121156 | 4N28FVM | 6-Pin DIP Package Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 121157 | 4N28M | 6-Pin DIP Package Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 121158 | 4N28M-V | GENERAL PURPOSE TYPE PHOTOCOUPLER | Lite-On Technology Corporation |
| 121159 | 4N28S | 6-Pin DIP Package Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 121160 | 4N28S-TA | GENERAL PURPOSE TYPE PHOTOCOUPLER | Lite-On Technology Corporation |
