| PartNumber | 2N4339 | 2N4338 | 2N4338-E3 |
| Description | JFET JFET N-Channel -50V 50mA 300mW 2mW | JFET JFET N-Channel -50V 50mA 300mW 2mW | JFET RECOMMENDED ALT 106-2N4338 |
| Manufacturer | InterFET | InterFET | Vishay |
| Product Category | JFET | JFET | JFET |
| RoHS | Y | Y | Y |
| Technology | Si | Si | - |
| Mounting Style | Through Hole | Through Hole | SMD/SMT |
| Package / Case | TO-18-3 | TO-18-3 | TO-206AA |
| Transistor Polarity | N-Channel | N-Channel | N-Channel |
| Configuration | Single | Single | Single |
| Vds Drain Source Breakdown Voltage | 15 V | 15 V | - |
| Vgs Gate Source Breakdown Voltage | - 50 V | - 50 V | - 50 V |
| Drain Source Current at Vgs=0 | 1.5 mA | 600 uA | - |
| Id Continuous Drain Current | 100 pA | 100 pA | - |
| Rds On Drain Source Resistance | 1.7 kOhms | 2.5 kOhms | - |
| Pd Power Dissipation | 300 mW | 300 mW | - |
| Series | 2N43 | 2N43 | - |
| Packaging | Bulk | Bulk | Bulk |
| Type | JFET | JFET | JFET |
| Brand | InterFET | InterFET | Vishay Semiconductors |
| Forward Transconductance Min | 800 uS | 600 uS | - |
| Gate Source Cutoff Voltage | - 1.8 V | - 1 V | - |
| Factory Pack Quantity | 1 | 1 | 200 |
| Part # Aliases | SMP4339 | SMP4338 | - |