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Product Detailed Parameters
- Description：JFET N-Channel -40V Low Ciss
- Series：IFN201
- Mfr：InterFET
- Package：Tape & Reel (TR)
- FET Type：N-Channel
- Voltage - Breakdown (V(BR)GSS)：-
- Drain to Source Voltage (Vdss)：40 V
- Current - Drain (Idss) @ Vds (Vgs=0)：800 µA @ 20 V
- Current Drain (Id) - Max：-
- Voltage - Cutoff (VGS off) @ Id：800 mV @ 10 nA
- Input Capacitance (Ciss) (Max) @ Vds：4pF @ 20V
- Resistance - RDS(On)：1.2 kOhms
- Power - Max：350 mW
- Operating Temperature：-55°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：SOT-23-3
- Supplier Device Package：SOT-23-3
- Grade：-
- Qualification：-
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Overview
The IFN201AST3TR is an N-channel JFET from InterFET, packaged in a surface-mount SOT-23 case. It utilizes the InterFET N106A geometry and features tightly screened VGS(OFF) ranging from -0.5V to -1.0V. Key electrical parameters include a gate-to-source breakdown voltage of -40V, typical gate leakage of 750fA at 20V, and typical input capacitance of 3pF. The device offers high radiation tolerance and complies with RoHS, REACH, and CMR standards.
Feature Summary
- Tightly screened cutoff voltage for precise biasing
- Ultra-low gate leakage current
- Minimal input capacitance for high-frequency performance
- High radiation tolerance suitable for harsh environments
Applications
- Low noise amplifiers
- Low leakage switches
- Signal mixers
- Audio tone control circuits
- Medical imaging systems
Procurement Notes
Verify the specific suffix 'TR' indicates tape and reel packaging when ordering. Confirm that the IFN201A variant matches the required VGS(OFF) binning specifications for the design. Ensure compatibility with standard SOT-23 footprint layouts during procurement planning.
Selection Notes
Select this component for applications requiring low noise and high radiation hardness. Compare against industry standard crosses like SST201 or J201 if pin compatibility is critical. Verify thermal derating requirements for continuous power dissipation in the final assembly.
Part Context
This part belongs to the IFN201 family, which includes variants like IFN201ST3 and IFN202ST3. The IFN201A represents a tightly screened subset of the general IFN201 series, offering narrower parameter tolerances for VGS(OFF).
Replacement Considerations
Officially listed industry standard crosses include SST201, MMBFJ201, J201, and J202. Similar parts such as 2N4338, 2N4339, and 2N4867 are also documented. Verify pinout compatibility as source and drain pins are interchangeable in the SOT-23 package.
