LM2991 Série
| Pièce fabricant# | Description | Fabricant | En stock | Fonctionnement |
| LM2991SX/NOPB | IC REG LIN NEG ADJ 1A DDPAK | National Semiconductor | 2339 |
|
| LM2991T/LB03 | LM2991 NEGATIVE LOW DROPOUT ADJU | National Semiconductor | 5087 |
|
| LM2991T/NOPB | IC REG LIN NEG ADJ 1A TO220-5 | National Semiconductor | 6992 |
|
| LM2991SX | IC REG LINEAR NEG ADJ 1A DDPAK | National Semiconductor | 4339 |
|
| LM2991S | IC REG LIN NEG ADJ 1A DDPAK | Texas Instruments | 5555 |
|