LSK489 TO-71 6L ROHS

$6.95

Description：JFET 2N-CH 60V TO71-6
Series：LSK489

SKU:5eb78fa9e04e Category: JFETs Brand: Linear Integrated Systems, Inc.

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Product introduction

Product Detailed Parameters

Description：JFET 2N-CH 60V TO71-6
Series：LSK489
Mfr：Linear Integrated Systems, Inc.
Package：Bag
FET Type：2 N-Channel (Dual)
Voltage - Breakdown (V(BR)GSS)：60 V
Drain to Source Voltage (Vdss)：-
Current - Drain (Idss) @ Vds (Vgs=0)：2.5 mA @ 15 V
Current Drain (Id) - Max：-
Voltage - Cutoff (VGS off) @ Id：1.5 V @ 1 nA
Input Capacitance (Ciss) (Max) @ Vds：8pF @ 15V
Resistance - RDS(On)：-
Power - Max：500 mW
Operating Temperature：-55°C ~ 150°C (TJ)
Mounting Type：Through Hole
Package / Case：TO-71-6 Metal Can
Supplier Device Package：TO-71-6
Grade：-
Qualification：-

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LSK489 TO-71 6L ROHS

Overview

The LSK489 is a monolithic dual N-channel JFET amplifier featuring industry-low input capacitance and low noise. It offers an input voltage noise of 1.8 nV/√Hz at 1 kHz and a common source input capacitance of 4 pF. The device provides high CMRR (102 dB typical) and tight differential voltage matching. Available in TO-71 6L, SOIC 8L, and SOT-23 6L packages, it supports continuous power dissipation of 300 mW per side with a maximum gate-to-source voltage of 60 V.

Feature Summary

Monolithic dual N-channel construction providing excellent matching and thermal tracking
Ultra-low common source input capacitance to reduce intermodulation distortion
Low offset voltage and low drift over temperature range for precision applications
High common mode rejection ratio ensuring accurate signal processing

Applications

Wideband differential amplifiers
High-speed comparators
Impedance converters
Sonobuoys and hydrophones
Acoustic sensors

Procurement Notes

Verify the specific grade (A or B) required for your design, as IDSS ranges differ between grades. Confirm package availability matches your PCB layout needs, as the TO-71 6L is pin-compatible with the LSK389. Check datasheet limits for custom selection codes if tighter electrical parameters are necessary for your application.

Selection Notes

Select the LSK489 when low input capacitance is critical to minimize intermodulation distortion, rather than absolute lowest noise. Choose Grade A for tighter IDSS matching (ΔIDSS = 6mA) or Grade B for higher current ranges (ΔIDSS = 7mA). Ensure the operating temperature stays within -55°C to +150°C for reliable performance.

Part Context

The LSK489 serves as a low-capacitance alternative to the LSK389 within Linear Integrated Systems' portfolio. While the LSK389 offers lower noise, the LSK489 provides significantly lower gate-to-drain capacitance (4pF vs 25pF). Both devices share identical pinouts and package options, allowing for interchangeable use in designs prioritizing speed and low distortion over minimal noise floor.