| Manufacturer | Part Number | Description |
|---|---|---|
Philips Semiconductors (now NXP Semiconductors)
| PMLL5231B | Voltage regulator diodes |
Microsemi (now Microchip Technology)
| MLL5231 | LEADLESS GLASS ZENER DIODES |
Motorola Semiconductor (now NXP Semiconductors)
| MLL5231 | GLASS SILICON ZENER DIODES |
