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| PartNumber | 1N957B | 1N957B TR | 1N957B BK |
| Description | Zener Diodes Zener Diodes | Zener Diodes 6.8Vz 4.5 Ohm 150uA 5.2 Vr 47mA 500mW | Zener Diodes 6.8Vz 4.5 Ohm 150uA 5.2 Vr 47mA 500mW |
| Manufacturer | Microchip | Central Semiconductor | Central Semiconductor |
| Product Category | Zener Diodes | Zener Diodes | Zener Diodes |
| RoHS | N | Y | Y |
| Mounting Style | Through Hole | Through Hole | Through Hole |
| Package / Case | DO-7 | DO-35 | DO-35 |
| Packaging | Bulk | Reel | Bulk |
| Brand | Microchip / Microsemi | Central Semiconductor | Central Semiconductor |
| Product Type | Zener Diodes | Zener Diodes | Zener Diodes |
| Factory Pack Quantity | 1 | 10000 | 2500 |
| Subcategory | Diodes & Rectifiers | Diodes & Rectifiers | Diodes & Rectifiers |
| Vz Zener Voltage | - | 6.8 V | 6.8 V |
| Pd Power Dissipation | - | 500 mW | 500 mW |
| Voltage Tolerance | - | 5 % | 5 % |
| Voltage Temperature Coefficient | - | - | - |
| Zener Current | - | 150 uA | 150 uA |
| Zz Zener Impedance | - | 4.5 Ohms | 4.5 Ohms |
| Minimum Operating Temperature | - | - 65 C | - 65 C |
| Maximum Operating Temperature | - | + 200 C | + 200 C |
| Configuration | - | Single | Single |
| Test Current | - | 18.5 mA | 18.5 mA |
| Diameter | - | 2.29 mm | 2.29 mm |
| Length | - | 5.08 mm | 5.08 mm |
| Ir Reverse Current | - | 150 uA | 150 uA |
| Vf Forward Voltage | - | 1.5 V | 1.5 V |
| Part # Aliases | - | 1N957B PBFREE TR | 1N957B BK PBFREE |