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Product Detailed Parameters
- Description：JFET N-Channel -25V Low Ciss
- Series：SMP5486
- Mfr：InterFET
- Package：Tape & Reel (TR)
- FET Type：N-Channel
- Voltage - Breakdown (V(BR)GSS)：-
- Drain to Source Voltage (Vdss)：25 V
- Current - Drain (Idss) @ Vds (Vgs=0)：12 mA @ 15 V
- Current Drain (Id) - Max：-
- Voltage - Cutoff (VGS off) @ Id：4 V @ 10 nA
- Input Capacitance (Ciss) (Max) @ Vds：3.5pF @ 15V
- Resistance - RDS(On)：150 Ohms
- 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 SMP5486TR is an N-Channel JFET from InterFET, utilizing the N0026S geometry for low noise and low leakage performance. It features a -25V Gate to Source Breakdown Voltage (BVGSS) and a Drain to Source Saturation Current (IDSS) range of 8 mA to 20 mA at VDS=15V, VGS=0V. The Gate to Source Cutoff Voltage (VGS(off)) spans -2 V to -6 V. Forward Transconductance (GFS) ranges from 3500 μS to 3500 μS minimum. Input Capacitance (Ciss) is typically 5 pF, with Reverse Transfer Capacitance (Crss) at 1 pF. Continuous Power Dissipation is 360 mW.
Feature Summary
- Designed for low noise applications with typical noise figures of 4 nV/√Hz.
- Offers low input capacitance (Ciss) of 4.3pF typical for high-frequency stability.
- Exhibits extremely low gate leakage current, typically less than 10pA at room temperature.
Applications
- VHF/UHF Amplifiers
- Low Noise Amplifier Designs
Procurement Notes
Verify the specific binning requirements for IDSS and VGS(off) against the datasheet tables, as the TR suffix indicates tape and reel packaging which may have specific handling constraints. Confirm that the SOT-23 package dimensions align with the suggested pad layout provided in the mechanical data section before finalizing the PCB design.
Selection Notes
Select this component when designing circuits requiring minimal gate leakage and low input capacitance at VHF/UHF frequencies. Compare the IDSS and VGS(off) ranges against the 2N5484 and 2N5485 variants to ensure the saturation current and cutoff voltage meet the specific biasing needs of the amplifier stage.
Part Context
This part belongs to the 2N5484-5-6 family of N-Channel JFETs manufactured by InterFET. The SMP5486TR variant specifically denotes the surface-mount SOT-23 package configuration supplied in tape and reel format. It shares the same electrical characteristics and N0026S geometry as the through-hole TO-92 versions within the same series.
Replacement Considerations
The 2N5486 is the direct through-hole equivalent. The SMP5486 is the bulk SOT-23 alternative. Ensure pinout compatibility between SOT-23 and other packages if substituting.
FAQ
What is the typical input capacitance of the SMP5486TR?
The typical input capacitance (Ciss) is 4.3 pF, with a maximum specified value of 5 pF at 1 MHz.
What is the maximum continuous forward gate current rating?
The maximum continuous forward gate current (IFG) is rated at -25 mA.
Does the SMP5486TR support operation at elevated temperatures?
Yes, the operating junction temperature range extends up to 125 °C, with power derating required above 25 °C.
