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| PartNumber | 2N4859A | 2N4859 | 2N4859JAN |
| Description | JFET JFET N-Channel -30V 1.8W 10mW 50mA | JFET JFET N-Channel -30V 1.8W 10mW 50mA | Trans JFET N-CH 3-Pin TO-206AA - Bulk (Alt: 2N4859JAN02) |
| Manufacturer | InterFET | InterFET | - |
| Product Category | JFET | JFET | - |
| RoHS | Y | Y | - |
| Technology | Si | Si | - |
| Mounting Style | Through Hole | Through Hole | - |
| Package / Case | TO-18-3 | TO-18-3 | - |
| Transistor Polarity | N-Channel | N-Channel | - |
| Configuration | Single | Single | - |
| Vds Drain Source Breakdown Voltage | 15 V | 15 V | - |
| Vgs Gate Source Breakdown Voltage | - 30 V | - 30 V | - |
| Drain Source Current at Vgs=0 | 50 mA | 50 mA | - |
| Id Continuous Drain Current | 500 pA | 500 pA | - |
| Rds On Drain Source Resistance | 25 Ohms | 25 Ohms | - |
| Pd Power Dissipation | 1.8 W | 1.8 W | - |
| Series | 2N485 | 2N485 | - |
| Packaging | Bulk | Bulk | - |
| Type | JFET | JFET | - |
| Brand | InterFET | InterFET | - |
| Gate Source Cutoff Voltage | - 10 V | - 10 V | - |
| Factory Pack Quantity | 1 | 1 | - |