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| Part Number: | PTV3.9B-E3/85A | 
| Category: | Discrete Semiconductor Products | 
| Subcategory: | Diodes - Zener - Single | 
| Manufacturer: | Vishay General Semiconductor - Diodes Division | 
| Packaging: | Tape & Reel (TR) | 
| Product Status: | Obsolete | 
| Voltage - Zener (Nom) (Vz): | 4.2 V | 
| Tolerance: | ±6% | 
| Power - Max: | 600 mW | 
| Impedance (Max) (Zzt): | 15 Ohms | 
| Current - Reverse Leakage @ Vr: | 20 µA @ 1 V | 
| Voltage - Forward (Vf) (Max) @ If: | 1.5 V @ 200 mA | 
| Operating Temperature: | 150°C | 
| Mounting Type: | Surface Mount | 
| Package / Case: | DO-220AA | 
| Supplier Device Package: | DO-220AA (SMP) |