| PartNumber | 1N821-1E3 | 1N821-1 | 1N821-1/TR |
| Description | Zener Diodes Zener Ref Diodes 5.89-6.51 V 15 Ohms | Zener Diodes OTC Temperature Compensated Zeners | Zener Diodes OTC Temperature Compensated Zeners |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | Zener Diodes | Zener Diodes | Zener Diodes |
| RoHS | Y | N | N |
| Mounting Style | Through Hole | Through Hole | Through Hole |
| Package / Case | DO-35-2 | DO-35-2 | DO-204AH-2 |
| Packaging | Bulk | Bulk | Reel |
| Termination Style | Axial | Axial | - |
| Brand | Microchip / Microsemi | Microchip / Microsemi | Microchip / Microsemi |
| Product Type | Zener Diodes | Zener Diodes | Zener Diodes |
| Factory Pack Quantity | 1 | 1 | 1 |
| Subcategory | Diodes & Rectifiers | Diodes & Rectifiers | Diodes & Rectifiers |
| Unit Weight | 0.003845 oz | 0.004833 oz | - |
| Vz Zener Voltage | - | 6.51 V | 6.2 V |
| Pd Power Dissipation | - | 500 mW | 0.5 W |
| Voltage Tolerance | - | 5 % | 5 % |
| Voltage Temperature Coefficient | - | 0.01 %/C | 0.01 %/C |
| Zener Current | - | 2 uA | 2 uA |
| Zz Zener Impedance | - | 15 Ohms | 15 Ohms |
| Minimum Operating Temperature | - | - 55 C | - 65 C |
| Maximum Operating Temperature | - | + 175 C | + 175 C |
| Configuration | - | Single | Single |
| Diameter | - | 2.29 mm | 2.03 mm |
| Height | - | - | - |
| Length | - | 5.08 mm | 4.44 mm |
| Width | - | - | - |
| Voltage Regulation Accuracy | - | - | - |
| Ir Reverse Current | - | 2 uA | 2 uA |
| Vf Forward Voltage | - | - | - |
| Test Current | - | - | 7.5 mA |