TF256-4-TL-H

Description：JFET N-CH 1MA 3USFP
Series：-

SKU:30dc226138b3 Category: JFETs Brand: onsemi

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Product introduction

Product Detailed Parameters

Description：JFET N-CH 1MA 3USFP
Series：-
Mfr：onsemi
Package：Tape & Reel (TR)
FET Type：N-Channel
Voltage - Breakdown (V(BR)GSS)：-
Drain to Source Voltage (Vdss)：-
Current - Drain (Idss) @ Vds (Vgs=0)：140 µA @ 2 V
Current Drain (Id) - Max：1 mA
Voltage - Cutoff (VGS off) @ Id：100 mV @ 1 µA
Input Capacitance (Ciss) (Max) @ Vds：3.1pF @ 2V
Resistance - RDS(On)：-
Power - Max：30 mW
Operating Temperature：150°C (TJ)
Mounting Type：Surface Mount
Package / Case：SOT-1123
Supplier Device Package：3-USFP
Grade：-
Qualification：-

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TF256-4-TL-H

Overview

The TF256-4-TL-H is an N-channel Junction Field-Effect Transistor (JFET) manufactured by onsemi. It features a maximum continuous drain current of 1 mA and a maximum power dissipation of 100 mW. The device utilizes a 3-VTFP surface-mount package with a maximum junction operating temperature of 150°C. Key electrical characteristics include a gate-source cutoff voltage of 100 mV at 1 µA drain current and a maximum input capacitance of 3.1 pF measured at 2 V drain-source voltage.

Feature Summary

N-channel JFET configuration for signal processing applications
Low input capacitance suitable for high-frequency circuits
Surface-mount construction for automated assembly

Applications

Electret condenser microphone preamplifiers
High-impedance buffer stages
Low-noise analog signal conditioning

Procurement Notes

Verify the exact part number against official documentation, as the provided model differs from the verified TF256TH-4-TL-H. Confirm component availability status, as this series has been marked as obsolete in public records. Ensure compliance with RoHS and REACH requirements before integration into final designs.

Selection Notes

Select this component based on its specific low-voltage cutoff characteristics and small form factor. Evaluate the trade-off between the 1 mA current limit and the required circuit impedance. Verify that the 3-VTFP package dimensions align with the target PCB layout constraints.

Part Context

This component belongs to the TF256 family of N-channel JFETs designed primarily for audio and sensor interface applications. These devices are characterized by their ability to drive high-impedance sources with minimal loading effects, making them standard choices for interfacing with electret microphones and similar transducers.