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| Part Number | 1N5256B | 1N5259B | 1N5257B | 1N5258B | 1N5250B | 1N5251B | 1N5252B | 1N5253B | 1N5254B | 1N5255B |
|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Fairchild Semiconductor | NTE Electronics, Inc | NTE Electronics, Inc | NTE Electronics, Inc | onsemi | onsemi | onsemi | Fairchild Semiconductor | Fairchild Semiconductor | onsemi |
| Product Status | Active | Active | Active | Active | Active | Active | Active | Active | Active | Active |
| Voltage - Zener (Nom) (Vz) | 30 V | 39 V | 33 V | 36 V | 20 V | 22 V | 24 V | 25 V | 27 V | 28 V |
| Tolerance | ±0.5% | ±0.5% | ±0.5% | ±0.5% | ±5% | ±5% | ±5% | ±5% | ±5% | ±5% |
| Power - Max | 500 mW | 500 mW | 500 mW | 500 mW | 500 mW | 500 mW | 500 mW | 500 mW | 500 mW | 500 mW |
| Impedance (Max) (Zzt) | 49 Ohms | 80 Ohms | 58 Ohms | 70 Ohms | 25 Ohms | 29 Ohms | 33 Ohms | 35 Ohms | 41 Ohms | 44 Ohms |
| Current - Reverse Leakage @ Vr | 100 nA @ 23 V | 100 nA @ 30 V | 100 nA @ 25 V | 100 nA @ 27 V | 100 nA @ 15 V | 100 nA @ 17 V | 100 nA @ 18 V | 100 nA @ 19 V | 100 nA @ 21 V | 100 nA @ 21 V |
| Voltage - Forward (Vf) (Max) @ If | 900 mV @ 200 mA | - | - | - | 1.2 V @ 200 mA | 1.2 V @ 200 mA | 1.2 V @ 200 mA | 1.2 V @ 200 mA | 1.2 V @ 200 mA | 900 mV @ 200 mA |
| Operating Temperature | - | -65°C ~ 200°C | -65°C ~ 200°C | -65°C ~ 200°C | -65°C ~ 200°C | -65°C ~ 200°C | -65°C ~ 200°C | -65°C ~ 200°C (TJ) | -65°C ~ 200°C (TJ) | - |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole |
| Package / Case | DO-204AH, DO-35, Axial | DO-204AH, DO-35, Axial | DO-204AH, DO-35, Axial | DO-204AH, DO-35, Axial | DO-204AH, DO-35, Axial | DO-204AH, DO-35, Axial | DO-204AH, DO-35, Axial | DO-204AH, DO-35, Axial | DO-204AH, DO-35, Axial | DO-204AH, DO-35, Axial |
| Supplier Device Package | - | - | - | - | DO-35 | DO-35 | DO-35 | DO-35 (DO-204AH) | DO-35 (DO-204AH) | DO-35 |
