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| PartNumber | 2N4391 | 2N4391-2 | 2N4391-2L |
| Description | JFET N-Chan JFET | JFET Field Effect Trnstr | THE 2N4391-2 WITH SOLDER DIP (Alt: 2N4391-2L) |
| Manufacturer | Central Semiconductor | Vishay | - |
| Product Category | JFET | JFET | - |
| RoHS | Y | N | - |
| Mounting Style | Through Hole | SMD/SMT | - |
| Package / Case | TO-18 | TO-206AA | - |
| Transistor Polarity | N-Channel | N-Channel | - |
| Configuration | Single | Single | - |
| Vds Drain Source Breakdown Voltage | 40 V | - | - |
| Vgs Gate Source Breakdown Voltage | 40 V | - 40 V | - |
| Drain Source Current at Vgs=0 | 50 mA to 150 mA | - | - |
| Id Continuous Drain Current | 0.1 nA | - | - |
| Rds On Drain Source Resistance | 30 Ohms | - | - |
| Pd Power Dissipation | 1.8 W | - | - |
| Series | 2N4391 | - | - |
| Packaging | Bulk | Bulk | - |
| Type | JFET | JFET | - |
| Brand | Central Semiconductor | Vishay / Siliconix | - |
| Factory Pack Quantity | 2000 | 50 | - |
| Part # Aliases | 2N4391 PBFREE | - | - |