| Manufacturer | Part Number | Description |
|---|---|---|
Digitron Semiconductors
| 1N2991B | ZENER DIODES |
| TAECL | 1N2991 | 10WATT ZENER DIODE |
Naina Semiconductor
| 1N2991B | ZENER DIODES |
| Solid State | 1N2991 | 10 WATTS ZENER DIODES |
Microsemi (now Microchip Technology)
| 1N2991B | 10Watt Zener Diodes |
America Semiconductor
| 1N2991 | Zener Diodes |
Motorola Semiconductor (now NXP Semiconductors)
| 1N2991 | ZENER DIODES |
