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Product Detailed Parameters
- Description：JFET N-Channel -20V Low Noise
- Series：IF4500
- Mfr：InterFET
- Package：Strip
- FET Type：N-Channel
- Voltage - Breakdown (V(BR)GSS)：-
- Drain to Source Voltage (Vdss)：20 V
- Current - Drain (Idss) @ Vds (Vgs=0)：30 mA @ 15 V
- Current Drain (Id) - Max：-
- Voltage - Cutoff (VGS off) @ Id：1.2 V @ 1 nA
- Input Capacitance (Ciss) (Max) @ Vds：28pF @ 15V
- Resistance - RDS(On)：20 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 InterFET IF4500ST3 is an N-Channel Junction Field Effect Transistor (JFET) housed in a surface-mount SOT-23 package. It utilizes the proprietary N0450L geometry to deliver low noise and high gain characteristics suitable for precision analog applications. Key electrical parameters include a gate-to-source breakdown voltage of -20V, a typical drain-to-source saturation current of 30mA, and a forward transconductance ranging from 15mS minimum to 70mS typical. The device features a low gate-to-source cutoff voltage with a typical value of -1.5V and operates within a junction temperature range of -55°C to 150°C.
Feature Summary
- Utilizes InterFET N0450L geometry for optimized performance
- Provides low noise and high gain capabilities
- Features extremely low gate leakage current
- Offers high radiation tolerance
Applications
- Low noise amplifiers
- Precision switches
- Voltage regulators
- Oscillators
- Signal mixers
Procurement Notes
Verify the specific ordering suffix against the manufacturer's documentation to confirm packaging type. The ST3 suffix indicates bulk SOT-23 packaging, while TR variants denote tape and reel options. Confirm RoHS compliance status and ensure the selected part number matches the required quantity format before finalizing procurement orders.
Selection Notes
Select this component for designs requiring low noise and high gain in low-voltage supply environments. The low VGS(OFF) characteristic makes it ideal for applications needing precise cutoff control. Ensure the circuit design accommodates the maximum power dissipation limits and verify that the SOT-23 thermal constraints are met for the intended operating conditions.
Part Context
This component belongs to the IF4500 series of N-Channel JFETs manufactured by InterFET. The series includes various package options such as TO-72 through-hole and bare die configurations. The IF4500ST3 specifically represents the surface-mount variant designed for automated assembly processes while maintaining the high-performance attributes of the broader product family.
Replacement Considerations
Public datasheets list industry standard cross-compatibility with J110, J110A, 2SK363, and MMBFJ110. Similar parts include 2N6550, IF4510, IF4520, IFN363, and SMPJ110. Verify pinout compatibility and electrical parameter tolerances before substituting.
