| Part Number | 1N971B | 1N979B |
|---|---|---|
| Manufacturer | Fairchild Semiconductor | Fairchild Semiconductor |
| Category | Diodes - Zener - Single | Diodes - Zener - Single |
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| Product Status | Obsolete | Obsolete |
| Voltage - Zener (Nom) (Vz) | 27 V | 56 V |
| Tolerance | ±5% | ±5% |
| Power - Max | 500 mW | 500 mW |
| Impedance (Max) (Zzt) | 41 Ohms | 150 Ohms |
| Current - Reverse Leakage @ Vr | 5 µA @ 20.6 V | 5 µA @ 42.6 V |
| Voltage - Forward (Vf) (Max) @ If | - | - |
| Operating Temperature | -65°C ~ 200°C | -65°C ~ 200°C |
| Mounting Type | Through Hole | Through Hole |
| Package / Case | DO-204AH, DO-35, Axial | DO-204AH, DO-35, Axial |
| Supplier Device Package | DO-35 (DO-204AH) | DO-35 (DO-204AH) |