| Part Number | PN4091 | PN4391 |
|---|---|---|
| Manufacturer | Fairchild Semiconductor | Fairchild Semiconductor |
| Category | Transistors - JFETs | Transistors - JFETs |
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| Product Status | Obsolete | Obsolete |
| FET Type | N-Channel | N-Channel |
| Voltage - Breakdown (V(BR)GSS) | 40 V | 30 V |
| Drain to Source Voltage (Vdss) | - | - |
| Current - Drain (Idss) @ Vds (Vgs=0) | 30 mA @ 20 V | 50 mA @ 20 V |
| Current Drain (Id) - Max | - | - |
| Voltage - Cutoff (VGS off) @ Id | 5 V @ 1 nA | 4 V @ 1 nA |
| Input Capacitance (Ciss) (Max) @ Vds | 16pF @ 20V | 14pF @ 20V |
| Resistance - RDS(On) | 30 Ohms | 30 Ohms |
| Power - Max | 625 mW | 625 mW |
| Operating Temperature | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) |
| Mounting Type | Through Hole | Through Hole |
| Package / Case | TO-226-3, TO-92-3 (TO-226AA) | TO-226-3, TO-92-3 (TO-226AA) |
| Supplier Device Package | TO-92-3 | TO-92-3 |