| Manufacturer | Part Number | Description |
|---|---|---|
National Semiconductor (now Texas Instruments)
| LM399 | Precision Reference |
|
National Semiconductor (now Texas Instruments)
| LM3999 | Precision Reference |
Linear Technology (now Analog Devices)
| LM399A | Precision Reference |
|
Linear Technology (now Analog Devices)
| LM399 | Precision Reference |
|
National Semiconductor (now Texas Instruments)
| LM399A | Precision Reference |
