LSK489B SOT-23 6L ROHS

$5.38

Description：JFET 2N-CH 60V SOT23-6
Series：LSK489

SKU:f4a9ee159ebc Category: JFETs Brand: Linear Integrated Systems, Inc.

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Product introduction

Product Detailed Parameters

Description：JFET 2N-CH 60V SOT23-6
Series：LSK489
Mfr：Linear Integrated Systems, Inc.
Package：Tape & Reel (TR),Cut Tape (CT)
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：Surface Mount
Package / Case：SOT-23-6
Supplier Device Package：SOT-23-6
Grade：-
Qualification：-

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LSK489B SOT-23 6L ROHS

Overview

The LSK489B is a low-noise, monolithic dual N-channel JFET amplifier in a SOT-23 6L package. It features an input capacitance of 4pF and a noise voltage of 1.8nV/√Hz at 1kHz. The device offers a common mode rejection ratio of 102dB and operates with a gate-to-source breakdown voltage of 60V. Drain saturation current ranges from 8.0mA to 15.0mA, with a transconductance of 1500µS. It provides tight differential matching and low offset drift for precision applications.

Feature Summary

Monolithic dual N-channel JFET construction providing excellent thermal tracking and matching
Industry-leading low input capacitance significantly reducing intermodulation distortion
Ultra-low noise profile with minimal popcorn noise characteristics
High common mode rejection ratio ensuring signal integrity

Applications

Wideband differential amplifiers
High-speed temperature compensated single-ended input amplifiers
High-speed comparators
Impedance converters
Sonobuoys and hydrophones

Procurement Notes

Verify the specific ordering suffix matches the required performance grade. Confirm the package type aligns with the PCB footprint requirements. Ensure the component meets RoHS standards if mandated by the design specifications. Cross-reference the datasheet revision to confirm electrical parameters match the intended application constraints.

Selection Notes

Select this component when minimizing input capacitance is critical for maintaining bandwidth and reducing distortion. The B-grade variant offers specific drain saturation current limits suitable for precise biasing requirements. Consider the SOT-23 package for space-constrained designs requiring surface mount technology.

Part Context

This part belongs to the LSK489 series of low-noise dual JFETs. It serves as a high-performance alternative to standard discrete JFETs by offering matched pairs on a single die. The device complements the single-channel LSK189 and shares pin compatibility with the LSK389 in certain packages.

Replacement Considerations

The LSK389 is a compatible replacement in TO-71 and SOIC packages due to identical fit, form, and pinout. Designers should verify that the slightly higher noise level of the LSK389 does not impact circuit sensitivity.