| Picture | Part Number | Description | Category | Manufacture |
 | 1N6006B_T50R | DIODE ZENER 18V 500MW DO-35 | MOSFET Semiconductor | Fairchild Semiconductor |
| 1N6006B_T50A | DIODE ZENER 18V 500MW DO-35 | MOSFET Semiconductor | Fairchild Semiconductor |
| 1N6006B | DIODE ZENER 18V 500MW DO-35 | MOSFET Semiconductor | Fairchild Semiconductor |
| 1N5248BTR | DIODE ZENER 18V 500MW DO-35 | MOSFET Semiconductor | Fairchild Semiconductor |
| 1N5248B_T50R | DIODE ZENER 18V 500MW DO-35 | MOSFET Semiconductor | Fairchild Semiconductor |
| 1N5248B_T50A | DIODE ZENER 18V 500MW DO-35 | MOSFET Semiconductor | Fairchild Semiconductor |
| 1N5248B | DIODE ZENER 18V 500MW DO-35 | MOSFET Semiconductor | Fairchild Semiconductor |
| BZX79C18_T50R | DIODE ZENER 18V 500MW DO-35 | MOSFET Semiconductor | Fairchild Semiconductor |
| BZX79C18_T50A | DIODE ZENER 18V 500MW DO-35 | MOSFET Semiconductor | Fairchild Semiconductor |
| BZX79C18 | DIODE ZENER 18V 500MW DO-35 | MOSFET Semiconductor | Fairchild Semiconductor |
| BZX55C18_T50R | DIODE ZENER 18V 500MW DO-35 | MOSFET Semiconductor | Fairchild Semiconductor |
| BZX55C18_T50A | DIODE ZENER 18V 500MW DO-35 | MOSFET Semiconductor | Fairchild Semiconductor |
| BZX55C18 | DIODE ZENER 18V 500MW DO-35 | MOSFET Semiconductor | Fairchild Semiconductor |
| 1N5248B-T | DIODE ZENER 18V 500MW DO-35 | MOSFET Semiconductor | Diodes Inc (VA) |
 | MTZJT-7718C | DIODE ZENER 18V 500MW DO-34 | MOSFET Semiconductor | Rohm Semiconductor |
| MTZJT-7718B | DIODE ZENER 18V 500MW DO-34 | MOSFET Semiconductor | Rohm Semiconductor |
 | PDZ18B,115 | DIODE ZENER 18V 400MW SOD323 | MOSFET Semiconductor | NXP Semiconductors |
 | BZX284-C18,115 | DIODE ZENER 18V 400MW SOD110 | MOSFET Semiconductor | NXP Semiconductors (VA) |
| BZX284-B18,115 | DIODE ZENER 18V 400MW SOD110 | MOSFET Semiconductor | NXP Semiconductors |
 | 1SMB5931BT3 | DIODE ZENER 18V 3W SMB | MOSFET Semiconductor | ON Semiconductor (VA) |
 | MZP4746ARL | DIODE ZENER 18V 3W DO-41 | MOSFET Semiconductor | ON Semiconductor |
| 1N5931B | DIODE ZENER 18V 3W DO-41 | MOSFET Semiconductor | ON Semiconductor |
| 1N5931BG | DIODE ZENER 18V 3W DO-41 | MOSFET Semiconductor | ON Semiconductor |
 | BZT52H-C18,115 | DIODE ZENER 18V 375MW SOD123F | MOSFET Semiconductor | NXP Semiconductors (VA) |
| MAZ41800MF | DIODE ZENER 18V 370MW DO-34 | MOSFET Semiconductor | Panasonic - SSG (VA) |
 | BZX84C18TA | DIODE ZENER 18V 350MW SOT23-3 | MOSFET Semiconductor | Zetex Inc (VA) |
| BZX84C18-7 | DIODE ZENER 18V 350MW SOT23-3 | MOSFET Semiconductor | Diodes Inc (VA) |
| MMBZ5248B-7 | DIODE ZENER 18V 350MW SOT23-3 | MOSFET Semiconductor | Diodes Inc |
 | MMBZ5248B | DIODE ZENER 18V 350MW SOT-23 | MOSFET Semiconductor | Fairchild Semiconductor |
| BZX84C18 | DIODE ZENER 18V 350MW SOT-23 | MOSFET Semiconductor | Fairchild Semiconductor |
