| PartNumber | SMP3972 | SMP3971 | SMP3970 |
| Description | JFET JFET N-Channel -40V 50mA 300mW 1.7mW | JFET JFET N-Channel -40V 50mA 300mW 1.7mW | JFET JFET N-Channel -40V 50mA 20Vds -1.0nA |
| Manufacturer | InterFET | InterFET | InterFET |
| Product Category | JFET | JFET | JFET |
| RoHS | Y | Y | Y |
| Technology | Si | Si | Si |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | SOT-23-3 | SOT-23-3 | SOT-23-3 |
| Transistor Polarity | N-Channel | N-Channel | N-Channel |
| Configuration | Single | Single | Single |
| Vds Drain Source Breakdown Voltage | 20 V | 20 V | 20 V |
| Vgs Gate Source Breakdown Voltage | - 40 V | - 40 V | - 40 V |
| Drain Source Current at Vgs=0 | 30 mA | 75 mA | 150 mA |
| Rds On Drain Source Resistance | 100 Ohms | 60 Ohms | 30 Ohms |
| Packaging | Bulk | Bulk | Bulk |
| Type | JFET | JFET | JFET |
| Brand | InterFET | InterFET | InterFET |
| Gate Source Cutoff Voltage | - 3 V | - 5 V | - 10 V |
| Factory Pack Quantity | 1 | 1 | 1 |