LS3955 TO-71 6L ROHS

$8.02

Description：JFET 2N-CH 60V TO71
Series：LS3955

SKU:4aa955cf7d7a Category: JFETs Brand: Linear Integrated Systems, Inc.

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Product introduction

Product Detailed Parameters

Description：JFET 2N-CH 60V TO71
Series：LS3955
Mfr：Linear Integrated Systems, Inc.
Package：Bulk
FET Type：2 N-Channel (Dual)
Voltage - Breakdown (V(BR)GSS)：60 V
Drain to Source Voltage (Vdss)：-
Current - Drain (Idss) @ Vds (Vgs=0)：500 µA @ 20 V
Current Drain (Id) - Max：-
Voltage - Cutoff (VGS off) @ Id：1 V @ 1 nA
Input Capacitance (Ciss) (Max) @ Vds：6pF @ 20V
Resistance - RDS(On)：-
Power - Max：400 mW
Operating Temperature：-55°C ~ 150°C (TJ)
Mounting Type：Through Hole
Package / Case：TO-71-6 Metal Can
Supplier Device Package：TO-71
Grade：-
Qualification：-

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LS3955 TO-71 6L ROHS

Overview

The LS3955 is a monolithic dual N-channel JFET amplifier from Linear Integrated Systems. It features a maximum gate-to-drain voltage of 60V and operates within a temperature range of -55°C to +150°C. The device provides a typical transconductance of 4000 µS at full conduction and 1250 µS during typical operation. Key electrical characteristics include a maximum drift versus temperature of 25 µV/°C, a typical offset voltage of 10 mV, and a typical input noise voltage of 10 nV/√Hz.

Feature Summary

Monolithic dual N-channel JFET architecture with proprietary matching for optimal performance
Ultra-low noise characteristics suitable for precision signal processing applications
Minimal threshold voltage drift over wide operating temperature ranges
Extremely low gate leakage current ensuring high input impedance stability

Applications

Ultra-high-end audio systems and studio reference amplifiers
Military sensors and acoustic sensing equipment
Battery-operated audio preamplifiers and mixer consoles
Instrumentation amplifiers and chemical/radiation detectors

Procurement Notes

Verify the specific LS3955 grade against project requirements, as the family includes variants with differing drift and offset specifications. Confirm package availability matches the required TO-71, TO-78, or SOIC form factor. Ensure compliance with RoHS standards if mandated by the procurement policy. Cross-reference absolute maximum ratings with system voltage limits to prevent device degradation.

Selection Notes

Select the LS3955 when low noise and tight matching are critical, specifically noting its 25 µV/°C drift limit compared to higher grades in the series. Consider the 60V breakdown rating for high-voltage floating applications. Evaluate the 400mW power dissipation capability relative to thermal management constraints. Compare differential parameters against other JFETs if extreme CMRR is required.

Part Context

Linear Integrated Systems manufactures this component using specialized processes derived from historical expertise in high-performance semiconductors. The LS3955 belongs to a family of matched dual JFETs designed for demanding analog applications. It serves as a high-fidelity alternative to discrete matched pairs, offering superior consistency and reduced board space through its integrated monolithic design.