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| PartNumber | 1N749A TR | 1N749A | 1N749A BK |
| Description | Zener Diodes 4.3V .5W | Zener Diodes Zener Diodes | Zener Diodes Std Zener Diode 4.3V .5W |
| Manufacturer | Central Semiconductor | Microchip | Central Semiconductor |
| Product Category | Zener Diodes | Zener Diodes | Zener Diodes |
| RoHS | Y | N | Y |
| Vz Zener Voltage | 4.3 V | - | - |
| Mounting Style | Through Hole | Through Hole | - |
| Package / Case | DO-35 | DO-35-2 | DO-35 |
| Pd Power Dissipation | 500 mW | - | - |
| Voltage Tolerance | 5 % | - | - |
| Voltage Temperature Coefficient | - | - | - |
| Zener Current | 2 uA | - | - |
| Zz Zener Impedance | 22 Ohms | - | - |
| Minimum Operating Temperature | - 65 C | - | - |
| Maximum Operating Temperature | + 200 C | - | - |
| Configuration | Single | - | - |
| Packaging | Reel | Bulk | Bulk |
| Series | 1N749 | - | 1N749 |
| Diameter | 2.29 mm | - | - |
| Height | - | - | - |
| Length | 5.08 mm | - | - |
| Width | - | - | - |
| Brand | Central Semiconductor | Microchip / Microsemi | Central Semiconductor |
| Voltage Regulation Accuracy | - | - | - |
| Ir Reverse Current | 2 uA | - | - |
| Product Type | Zener Diodes | Zener Diodes | Zener Diodes |
| Factory Pack Quantity | 10000 | 1 | 2500 |
| Subcategory | Diodes & Rectifiers | Diodes & Rectifiers | Diodes & Rectifiers |
| Vf Forward Voltage | 1.5 V | - | - |
| Part # Aliases | 1N749A PBFREE TR | - | 1N749A BK PBFREE |
| Unit Weight | 0.004833 oz | 0.004833 oz | - |