| 686481 | HMA121BR3 | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686482 | HMA121BR3V | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686483 | HMA121BR4 | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686484 | HMA121BR4V | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686485 | HMA121BV | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686486 | HMA121C | FULL PITCH MINI-FLAT PACKAGE 4-PIN OPTOCOUPLERS SCHEMATIC | Fairchild Semiconductor |
| 686487 | HMA121CR1 | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686488 | HMA121CR1V | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686489 | HMA121CR2 | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686490 | HMA121CR2V | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686491 | HMA121CR3 | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686492 | HMA121CR3V | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686493 | HMA121CR4 | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686494 | HMA121CR4V | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686495 | HMA121CV | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686496 | HMA121D | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686497 | HMA121DR1 | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686498 | HMA121DR1V | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686499 | HMA121DR2 | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
|
| 686500 | HMA121DR2V | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686501 | HMA121DR3 | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686502 | HMA121DR3V | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686503 | HMA121DR4 | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686504 | HMA121DR4V | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686505 | HMA121DV | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686506 | HMA121E | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686507 | HMA121ER1 | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686508 | HMA121ER1V | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686509 | HMA121ER2 | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686510 | HMA121ER2V | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686511 | HMA121ER3 | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686512 | HMA121ER3V | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686513 | HMA121ER4 | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686514 | HMA121ER4V | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686515 | HMA121EV | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686516 | HMA121F | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686517 | HMA121FR1 | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686518 | HMA121FR1V | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686519 | HMA121FR2 | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
| 686520 | HMA121FR2V | 4-pin Full Pitch MFP Phototransistor Output Optocoupler | Fairchild Semiconductor |
