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| Part Number | 1N749ATR | 1N746ATR | 1N747ATR | 1N748ATR | 1N749A/TR |
|---|---|---|---|---|---|
| Manufacturer | Fairchild Semiconductor | Fairchild Semiconductor | Fairchild Semiconductor | Fairchild Semiconductor | Microchip Technology |
| Product Status | Obsolete | Obsolete | Obsolete | Obsolete | Active |
| Voltage - Zener (Nom) (Vz) | 4.3 V | 3.3 V | 3.6 V | 3.9 V | 4.3 V |
| Tolerance | ±5% | ±5% | ±5% | ±5% | ±5% |
| Power - Max | 500 mW | 500 mW | 500 mW | 500 mW | 500 mW |
| Impedance (Max) (Zzt) | 22 Ohms | 28 Ohms | 24 Ohms | 23 Ohms | 22 Ohms |
| Current - Reverse Leakage @ Vr | 2 µA @ 1 V | 10 µA @ 1 V | 10 µA @ 1 V | 10 µA @ 1 V | 2 µA @ 1 V |
| Voltage - Forward (Vf) (Max) @ If | 1.5 V @ 200 mA | 1.5 V @ 200 mA | 1.5 V @ 200 mA | 1.5 V @ 200 mA | 1.1 V @ 200 mA |
| Operating Temperature | -65°C ~ 200°C | -65°C ~ 200°C | -65°C ~ 200°C | -65°C ~ 200°C | -65°C ~ 175°C |
| Mounting Type | 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 |
| Supplier Device Package | DO-35 (DO-204AH) | DO-35 (DO-204AH) | DO-35 (DO-204AH) | DO-35 (DO-204AH) | DO-35 |
