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| Part Number | MMSZ5257B | MMSZ5259B | MMSZ5258B | MMSZ5257BS | MMSZ5254B | MMSZ5255B | MMSZ5256B |
|---|---|---|---|---|---|---|---|
| Manufacturer | Fairchild Semiconductor | Diotec Semiconductor | Diotec Semiconductor | Rectron USA | Fairchild Semiconductor | Fairchild Semiconductor | Fairchild Semiconductor |
| Product Status | Active | Active | Active | Active | Active | Active | Active |
| Voltage - Zener (Nom) (Vz) | 5.1 V | 39 V | 36 V | 33 V | 27 V | 28 V | 30 V |
| Tolerance | ±5% | ±5% | ±5% | ±5% | ±5% | ±5% | ±5% |
| Power - Max | 500 mW | 500 mW | 500 mW | 500 mW | 500 mW | 500 mW | 500 mW |
| Impedance (Max) (Zzt) | 41 Ohms | 80 Ohms | 70 Ohms | 41 Ohms | 25 Ohms | 44 Ohms | 49 Ohms |
| Current - Reverse Leakage @ Vr | 100 nA @ 25 V | 100 nA @ 30 V | 100 nA @ 27 V | - | - | 100 nA @ 21 V | 100 nA @ 23 V |
| Voltage - Forward (Vf) (Max) @ If | 900 mV @ 10 mA | 900 mV @ 10 mA | 900 mV @ 10 mA | - | - | 900 mV @ 10 mA | 900 mV @ 10 mA |
| Operating Temperature | - | -50°C ~ 150°C (TJ) | -50°C ~ 150°C (TJ) | - | - | 150°C (TJ) | 150°C (TJ) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | SOD-123F | SOD-123F | SOD-123F | SC-76, SOD-323 | SOD-123 | SOD-123 | SOD-123 |
| Supplier Device Package | SOD-123F | SOD-123F | SOD-123F | SOD-323 | SOD-123 | SOD-123 | SOD-123 |
