| LM4121 | National Semiconductor | Precision Micropower Low Dropout Voltage Reference |
| LM4121AIM5-1.2 | National Semiconductor | |
| LM4121AIM5-ADJ | National Semiconductor | Precision Micropower Low Dropout Voltage Reference |
| LM4121IM5-1.2 | National Semiconductor | |
| LM4121IM5-ADJ | National Semiconductor | Precision Micropower Low Dropout Voltage Reference |
| LM4121AIM5X-1.2 | National Semiconductor | |
| LM4121AIM5X-ADJ | National Semiconductor | Precision Micropower Low Dropout Voltage Reference |
| LM4121IM5X-1.2 | National Semiconductor | |
| LM4121IM5X-ADJ | National Semiconductor | Precision Micropower Low Dropout Voltage Reference |