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| Part Number: | 1N749AT/R | 
| Category: | Discrete Semiconductor Products | 
| Subcategory: | Diodes - Zener - Single | 
| Manufacturer: | EIC SEMICONDUCTOR INC. | 
| Packaging: | Tape & Reel (TR) | 
| Product Status: | Active | 
| Voltage - Zener (Nom) (Vz): | 4.3 V | 
| Tolerance: | ±5% | 
| Power - Max: | 500 mW | 
| Impedance (Max) (Zzt): | 22 Ohms | 
| Current - Reverse Leakage @ Vr: | 2 µA @ 1 V | 
| Voltage - Forward (Vf) (Max) @ If: | 1.2 V @ 200 mA | 
| Operating Temperature: | 175°C (TJ) | 
| Mounting Type: | Through Hole | 
| Package / Case: | DO-204AH, DO-35, Axial | 
| Supplier Device Package: | DO-35 |