LSK389B SOIC 8L ROHS

$9.49

Description：JFET 2N-CH 40V 10MA 8SOIC
Series：LSK389

SKU:bd369b0cf996 Category: JFETs Brand: Linear Integrated Systems, Inc.

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Product introduction

Product Detailed Parameters

Description：JFET 2N-CH 40V 10MA 8SOIC
Series：LSK389
Mfr：Linear Integrated Systems, Inc.
Package：Tape & Reel (TR),Cut Tape (CT)
FET Type：2 N-Channel (Dual)
Voltage - Breakdown (V(BR)GSS)：40 V
Drain to Source Voltage (Vdss)：40 V
Current - Drain (Idss) @ Vds (Vgs=0)：6 mA @ 10 V
Current Drain (Id) - Max：10 mA
Voltage - Cutoff (VGS off) @ Id：300 mV @ 1 µA
Input Capacitance (Ciss) (Max) @ Vds：25pF @ 10V
Resistance - RDS(On)：-
Power - Max：400 mW
Operating Temperature：-55°C ~ 150°C (TJ)
Mounting Type：Surface Mount
Package / Case：8-SOIC (0.154", 3.90mm Width)
Supplier Device Package：8-SOIC
Grade：-
Qualification：-

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LSK389B SOIC 8L ROHS

Overview

The LSK389B is an ultra-low noise monolithic dual N-channel JFET amplifier from Linear Integrated Systems. It features a typical voltage noise of 1.6 nV/√Hz at 1 kHz and 3.2 nV/√Hz at 10 Hz. The device offers a saturation drain current (IDSS) range of 6 to 12 mA with a tight matching tolerance of 10%. Key electrical parameters include a maximum gate-to-source breakdown voltage of 40 V, a typical transconductance of 20 mS, and a typical input capacitance of 25 pF. It is housed in a surface-mount SOIC 8L package.

Feature Summary

Ultra-low noise performance with guaranteed elimination of burst noise
Monolithic dual construction for improved thermal tracking and IDSS matching
High breakdown voltage providing linear headroom in high transient applications

Applications

Audio amplifiers and preamps
Discrete low-noise operational amplifiers
Battery-operated audio preamps
Acoustic sensors and sonic imaging
Hydrophones and sonobuoys

Procurement Notes

Verify the specific grade suffix matches the required IDSS range. Confirm the package type corresponds to the design requirements. Check RoHS compliance status if applicable. Ensure the source document is the official manufacturer datasheet. Validate pinout compatibility during integration.

Selection Notes

Select this component for applications requiring minimal signal degradation. The dual configuration simplifies circuit design by ensuring matched characteristics. Consider the 40V breakdown rating for high-voltage transient environments. Evaluate the low input capacitance for high-frequency signal integrity.

Part Context

The LSK389 series represents the industry's lowest noise dual N-channel JFETs. It is designed as a superior alternative to discrete matched pairs. The LSK170 serves as the single-channel equivalent within the same product family.