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2N4119A is listed in the Jfets range at ChipApex. The manufacturer field lists Vishay Siliconix. Its product description is JFET N-CH 40V TO206AF. Review the specifications below when checking this part for your BOM.
Jfets specifications for 2N4119A
- Description：JFET N-CH 40V TO206AF
- Series：-
- Mfr：Vishay Siliconix
- Package：Bulk
- FET Type：N-Channel
- Voltage - Breakdown (V(BR)GSS)：40 V
- Drain to Source Voltage (Vdss)：-
- Current - Drain (Idss) @ Vds (Vgs=0)：200 µA @ 10 V
- Current Drain (Id) - Max：-
- Voltage - Cutoff (VGS off) @ Id：2 V @ 1 nA
- Input Capacitance (Ciss) (Max) @ Vds：3pF @ 10V
- Resistance - RDS(On)：-
- Power - Max：300 mW
- Operating Temperature：-55°C ~ 175°C (TJ)
- Mounting Type：Through Hole
- Package / Case：TO-206AF, TO-72-4 Metal Can
- Supplier Device Package：TO-206AF (TO-72)
- Grade：-
- Qualification：-
Jfets datasheet and documents for 2N4119A
Jfets Overview
The Vishay Siliconix 2N4119A is an N-channel JFET designed for ultra-high input impedance applications. It features a Gate-Source Cutoff Voltage (VGS(off)) ranging from -2 V to -6 V and a minimum Forward Transconductance (gfs) of 100 µS. The device specifies a minimum Gate-Source Breakdown Voltage (V(BR)GSS) of -40 V and a typical Gate Reverse Current (IGSS) of 0.2 pA at room temperature. These characteristics support low-noise, high-sensitivity front-end amplifier designs.
Jfets Feature Summary
- Ultra-low leakage current with typical operation at 0.2 pA
- Ultrahigh input impedance suitable for sensitive signal sources
- Low noise performance for precision amplification
- Hermetically sealed TO-206AF package option for military processing
Jfets Applications
- High-impedance transducer amplifiers
- Smoke detector input circuits
- Infrared detector amplifiers
- Precision test equipment
Jfets Procurement Notes
Verify the specific ordering suffix against the datasheet to confirm the required package type (TO-72, TO-92, or SOT-23). Ensure that the selected variant meets the necessary environmental specifications, such as operating temperature range and hermetic sealing requirements for military-grade applications.
Jfets Selection Notes
Select the 2N4119A when a Gate-Source Cutoff Voltage between -2 V and -6 V is required. This model offers higher saturation drain current compared to the 2N4117A and 2N4118A variants. Choose this component for mid-to-high frequency designs requiring minimal signal loss with high-impedance sources.
Jfets Part Context
The 2N4119A belongs to the Vishay Siliconix 2N/PN/SST4117A series of N-channel JFETs. This family provides options in through-hole and surface-mount packages. The series is engineered for applications demanding exceptional input impedance and low gate leakage currents across varying temperature conditions.
Jfets Replacement Considerations
Compatible substitutes within the same series include the 2N4117A and 2N4118A. Verify that the alternative part number matches the required VGS(off) range and gfs specifications for the specific circuit design.
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