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| PartNumber | 1N4128-1 | 1N4128 | 1N4128-TR |
| Description | Zener Diodes Zener Diodes | Zener Diodes .25W 5% Lw Noise/Lvl | Zener Diodes .25W 5% Lw Noise/Lvl |
| Manufacturer | Microchip | Central Semiconductor | - |
| Product Category | Zener Diodes | Zener Diodes | - |
| RoHS | N | Y | - |
| Packaging | Bulk | Bulk | - |
| Brand | Microchip / Microsemi | Central Semiconductor | - |
| Product Type | Zener Diodes | Zener Diodes | - |
| Factory Pack Quantity | 1 | 2500 | - |
| Subcategory | Diodes & Rectifiers | Diodes & Rectifiers | - |
| Vz Zener Voltage | - | 60 V | - |
| Mounting Style | - | Through Hole | - |
| Package / Case | - | DO-35-2 | - |
| Pd Power Dissipation | - | 250 mW | - |
| Voltage Tolerance | - | 5 % | - |
| Zener Current | - | 4 mA | - |
| Zz Zener Impedance | - | 400 Ohms | - |
| Minimum Operating Temperature | - | - 65 C | - |
| Maximum Operating Temperature | - | + 200 C | - |
| Configuration | - | Single | - |
| Test Current | - | 0.25 mA | - |
| Height | - | 2.29 mm | - |
| Length | - | 5.08 mm | - |
| Termination Style | - | Axial | - |
| Width | - | 2.29 mm | - |
| Ir Reverse Current | - | 10 nA | - |
| Part # Aliases | - | 1N4128 BK | - |
| Unit Weight | - | 0.004833 oz | - |