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Product Detailed Parameters
- Description：JFET N-CH 25V TO92
- Series：J211
- Mfr：Linear Integrated Systems, Inc.
- Package：Bulk
- FET Type：N-Channel
- Voltage - Breakdown (V(BR)GSS)：25 V
- Drain to Source Voltage (Vdss)：-
- Current - Drain (Idss) @ Vds (Vgs=0)：7 mA @ 15 V
- Current Drain (Id) - Max：-
- Voltage - Cutoff (VGS off) @ Id：2.5 V @ 1 nA
- Input Capacitance (Ciss) (Max) @ Vds：4pF @ 15V
- Resistance - RDS(On)：-
- Power - Max：360 mW
- Operating Temperature：-55°C ~ 150°C
- Mounting Type：Through Hole
- Package / Case：TO-226-3, TO-92-3 (TO-226AA)
- Supplier Device Package：TO-92
- Grade：-
- Qualification：-
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Overview
The J211 is a single-channel, low-noise N-channel Junction Field-Effect Transistor (JFET) manufactured by Linear Integrated Systems. It serves as a direct replacement for equivalent devices from Fairchild, NXP, and Siliconix-Vishay. The component utilizes a TO-92 3L RoHS compliant package. Key electrical characteristics include a minimum forward transconductance (gfs) of 7000 µmho, a maximum gate leakage current (IGSS) of 100 pA, and a typical input capacitance (CISS) of 5 pF. The device supports a gate-drain or gate-source voltage of -25V and operates within a temperature range of -55°C to +150°C.
Feature Summary
- Low noise performance suitable for sensitive signal amplification
- High input impedance with minimal gate leakage current
- Direct compatibility with legacy Fairchild, NXP, and Siliconix-Vishay designs
Applications
- General purpose low-noise amplifier circuits
- Precision analog signal conditioning
- Audio pre-amplification stages
Procurement Notes
Verify the specific ordering suffix matches the required package type, as the J211 designation corresponds to the TO-92 3L form factor. Confirm RoHS compliance status if environmental regulations apply to the final assembly. Ensure the supplier provides documentation confirming equivalence to original Fairchild or Vishay specifications for seamless integration into existing designs.
Selection Notes
Select this component when high input impedance and low noise are critical requirements for the application. The J211 offers superior transconductance compared to standard variants like the J210. Consider the thermal dissipation limits and derating factors when designing for elevated ambient temperatures within the specified operating range.
Part Context
This part belongs to the Linear Systems J/SST210 series of low-noise N-channel JFETs. The series includes variants such as J210, J212, and SST210/211/212 in different packages including SOT-23 and die forms. The J211 specifically denotes the through-hole TO-92 version optimized for general-purpose low-noise applications requiring robust mechanical packaging.
Replacement Considerations
Verified equivalents include Fairchild J211, NXP J211, and Siliconix-Vishay J211. These parts share identical pinouts and electrical characteristics, allowing for direct substitution in existing PCB layouts without circuit modification.
