| 121081 | 4N27 | GAAS INFRARED EMITTING DIODE | QT Optoelectronics |
| 121082 | 4N27 | Optoelectronic coupling element (Optocoupler) | TELEFUNKEN |
| 121083 | 4N27 | Optocoupler 6-PDIP | Texas Instruments |
| 121084 | 4N27 | Optocoupler, Phototransistor Output, With Base Connection | Vishay |
| 121085 | 4N27(SHORT) | Photocoupler GaAs IRed & Photo .Transistor | TOSHIBA |
| 121086 | 4N27-M | GENERAL PURPOSE 6-PIN PHOTOTRANSISTOR OPTOCOUPLERS | Fairchild Semiconductor |
| 121087 | 4N27-V | GENERAL PURPOSE TYPE PHOTOCOUPLER | Lite-On Technology Corporation |
| 121088 | 4N27-X007 | Optocouplers | Vishay |
| 121089 | 4N27-X009 | Optocouplers | Vishay |
| 121090 | 4N27.300 | GENERAL PURPOSE 6-PIN PHOTOTRANSISTOR OPTOCOUPLERS | Fairchild Semiconductor |
| 121091 | 4N27.300W | GENERAL PURPOSE 6-PIN PHOTOTRANSISTOR OPTOCOUPLERS | Fairchild Semiconductor |
| 121092 | 4N27.3S | GENERAL PURPOSE 6-PIN PHOTOTRANSISTOR OPTOCOUPLERS | Fairchild Semiconductor |
| 121093 | 4N27.3SD | GENERAL PURPOSE 6-PIN PHOTOTRANSISTOR OPTOCOUPLERS | Fairchild Semiconductor |
| 121094 | 4N27.S | GENERAL PURPOSE 6-PIN PHOTOTRANSISTOR OPTOCOUPLERS | Fairchild Semiconductor |
| 121095 | 4N27.SD | GENERAL PURPOSE 6-PIN PHOTOTRANSISTOR OPTOCOUPLERS | Fairchild Semiconductor |
| 121096 | 4N27.W | GENERAL PURPOSE 6-PIN PHOTOTRANSISTOR OPTOCOUPLERS | Fairchild Semiconductor |
| 121097 | 4N27300 | 6-Pin DIP Package Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 121098 | 4N27300W | 6-Pin DIP Package Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 121099 | 4N273S | 6-Pin DIP Package Phototransistor Output Optocoupler | Fairchild Semiconductor |
|
| 121100 | 4N273SD | 6-Pin DIP Package Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 121101 | 4N27A | PHOTO TRANSISTOR (AC LINE/DIGITAL LOGIC ISOLATOR) | TOSHIBA |
| 121102 | 4N27FM | 6-Pin DIP Package Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 121103 | 4N27FR2M | 6-Pin DIP Package Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 121104 | 4N27FR2VM | 6-Pin DIP Package Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 121105 | 4N27FVM | 6-Pin DIP Package Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 121106 | 4N27M | 6-Pin DIP Package Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 121107 | 4N27M-V | GENERAL PURPOSE TYPE PHOTOCOUPLER | Lite-On Technology Corporation |
| 121108 | 4N27S | 6-Pin DIP Package Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 121109 | 4N27S-TA | GENERAL PURPOSE TYPE PHOTOCOUPLER | Lite-On Technology Corporation |
| 121110 | 4N27S-TA1 | GENERAL PURPOSE TYPE PHOTOCOUPLER | Lite-On Technology Corporation |
| 121111 | 4N27S-V | GENERAL PURPOSE TYPE PHOTOCOUPLER | Lite-On Technology Corporation |
| 121112 | 4N27SD | 6-Pin DIP Package Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 121113 | 4N27SHORT | PHOTO TRANSISTOR (AC LINE/DIGITAL LOGIC ISOLATOR) | TOSHIBA |
| 121114 | 4N27SM | 6-Pin DIP Package Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 121115 | 4N27SR2 | GENERAL PURPOSE 6-PIN PHOTOTRANSISTOR OPTOCOUPLERS | Fairchild Semiconductor |
| 121116 | 4N27SR2M | 6-Pin DIP Package Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 121117 | 4N27SR2V | GENERAL PURPOSE 6-PIN PHOTOTRANSISTOR OPTOCOUPLERS | Fairchild Semiconductor |
| 121118 | 4N27SR2VM | 6-Pin DIP Package Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 121119 | 4N27STA-V | GENERAL PURPOSE TYPE PHOTOCOUPLER | Lite-On Technology Corporation |
| 121120 | 4N27STA1-V | GENERAL PURPOSE TYPE PHOTOCOUPLER | Lite-On Technology Corporation |
