| PartNumber | 1N5521B | 1N5521BUR-1 | 1N5521B (DO35) |
| Description | Zener Diodes Zener Diodes | Zener Diodes Zener Diodes | Zener Diodes Low Voltage Avalanche Zener |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | Zener Diodes | Zener Diodes | Zener Diodes |
| RoHS | N | N | N |
| Vz Zener Voltage | 4.3 V | - | - |
| Mounting Style | Through Hole | SMD/SMT | Through Hole |
| Package / Case | DO-35-2 | DO-213AA-2 | DO-35-2 |
| Pd Power Dissipation | 500 mW | - | - |
| Voltage Tolerance | 5 % | - | - |
| Zener Current | 88 mA | - | - |
| Zz Zener Impedance | 18 Ohms | - | - |
| Minimum Operating Temperature | - 65 C | - | - |
| Maximum Operating Temperature | + 175 C | - | - |
| Configuration | Single | - | - |
| Test Current | 20 mA | - | - |
| Packaging | Bulk | Foil Bag | - |
| Diameter | 1.7 mm | - | - |
| Height | 3.71 mm | - | - |
| Brand | Microchip / Microsemi | Microchip / Microsemi | Microchip / Microsemi |
| If Forward Current | 200 mA | - | - |
| Ir Reverse Current | 3 uA | - | - |
| Product Type | Zener Diodes | Zener Diodes | Zener Diodes |
| Factory Pack Quantity | 1 | 1 | 100 |
| Subcategory | Diodes & Rectifiers | Diodes & Rectifiers | Diodes & Rectifiers |
| Vf Forward Voltage | 1.1 V | - | - |
| Unit Weight | - | - | 0.004833 oz |