| Part Numbers | Manufacturer Name | Datasheet | Voltage - Zener (Vz) | Tolerance | Power - Max | Impedance (Max) (Zzt) | Reverse Leakage Current@ Vr | Forward Voltage (Vf) (Max) @ If | Operating Temperature | Mounting Type | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|---|
| MM5Z51V | FAIRCHILD SEMICONDUCTOR CORP | 51V | ±6% | 200mW | 180 Ohm | 50nA @ 35.7V | - | -55°C ~ 150°C | Surface Mount | SC-79, SOD-523F | |
| 1N4757A | FAIRCHILD SEMICONDUCTOR CORP | 51V | ±5% | 1W | 95 Ohm | 5µA @ 38.8V | - | -65°C ~ 200°C | Through Hole | DO-204AL, DO-41, Axial | |
| 1N4757A_T50A | FAIRCHILD SEMICONDUCTOR CORP | 51V | ±5% | 1W | 95 Ohm | 5µA @ 38.8V | - | -65°C ~ 200°C | Through Hole | DO-204AL, DO-41, Axial | |
| 1N4757A_T50R | FAIRCHILD SEMICONDUCTOR CORP | 51V | ±5% | 1W | 95 Ohm | 5µA @ 38.8V | - | -65°C ~ 200°C | Through Hole | DO-204AL, DO-41, Axial | |
| 1N978B | FAIRCHILD SEMICONDUCTOR CORP | 51V | ±5% | 500mW | 125 Ohm | 5µA @ 38.8V | - | -65°C ~ 200°C | Through Hole | DO-204AH, DO-35, Axial | |
| 1N978B_T50A | FAIRCHILD SEMICONDUCTOR CORP | 51V | ±5% | 500mW | 125 Ohm | 5µA @ 38.8V | - | -65°C ~ 200°C | Through Hole | DO-204AH, DO-35, Axial | |
| 1N978B_T50R | FAIRCHILD SEMICONDUCTOR CORP | 51V | ±5% | 500mW | 125 Ohm | 5µA @ 38.8V | - | -65°C ~ 200°C | Through Hole | DO-204AH, DO-35, Axial |
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