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| PartNumber | SMPZ3940B-M3/84A | SMPZ3940B-E3/85A | SMPZ3940B |
| Description | Zener Diodes 1.5watt 43volt 5% | Zener Diodes RECOMMENDED ALT 625-SMPZ3940B-M3/85A | |
| Manufacturer | Vishay | Vishay | - |
| Product Category | Zener Diodes | Zener Diodes | - |
| RoHS | E | E | - |
| Vz Zener Voltage | 43 V | 43 V | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | DO-220AA-2 | DO-220AA | - |
| Pd Power Dissipation | 1.5 W | 500 mW | - |
| Voltage Tolerance | - | 5 % | - |
| Voltage Temperature Coefficient | - | - | - |
| Zener Current | 35 mA | 35 mA | - |
| Zz Zener Impedance | 53 Ohms | 53 Ohms | - |
| Minimum Operating Temperature | - 65 C | - 65 C | - |
| Maximum Operating Temperature | + 150 C | + 150 C | - |
| Configuration | Single | Single | - |
| Test Current | 8.7 mA | 8.7 mA | - |
| Packaging | Reel | Reel | - |
| Series | SMPZ39-B | SMPZ39-B | - |
| Height | 1.15 mm | 1.15 mm | - |
| Length | 3.61 mm | 3.61 mm | - |
| Width | 2.18 mm | 2.18 mm | - |
| Brand | Vishay Semiconductors | Vishay Semiconductors | - |
| Ir Reverse Current | 500 nA | 500 nA | - |
| Product Type | Zener Diodes | Zener Diodes | - |
| Factory Pack Quantity | 3000 | 10000 | - |
| Subcategory | Diodes & Rectifiers | Diodes & Rectifiers | - |
| Tradename | eSMP | eSMP | - |
| Vf Forward Voltage | 1.5 V | - | - |
| Termination Style | - | SMD/SMT | - |
| Unit Weight | - | 0.000847 oz | - |