LSK170D TO-92 3L ROHS

$5.44

Description：JFET N-CH 40V TO92
Series：LSK170D

SKU:c4a6218fdaf0 Category: JFETs Brand: Linear Integrated Systems, Inc.

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Product introduction

Product Detailed Parameters

Description：JFET N-CH 40V TO92
Series：LSK170D
Mfr：Linear Integrated Systems, Inc.
Package：Bulk
FET Type：N-Channel
Voltage - Breakdown (V(BR)GSS)：40 V
Drain to Source Voltage (Vdss)：-
Current - Drain (Idss) @ Vds (Vgs=0)：18 mA @ 10 V
Current Drain (Id) - Max：-
Voltage - Cutoff (VGS off) @ Id：200 mV @ 1 nA
Input Capacitance (Ciss) (Max) @ Vds：20pF @ 15V
Resistance - RDS(On)：-
Power - Max：400 mW
Operating Temperature：-55°C ~ 135°C (TJ)
Mounting Type：Through Hole
Package / Case：TO-226-3, TO-92-3 (TO-226AA)
Supplier Device Package：TO-92
Grade：-
Qualification：-

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LSK170D TO-92 3L ROHS

Overview

The LSK170D is a single N-channel JFET in a TO-92 3L package, designed for ultra-low noise and high input impedance applications. It features a gate-to-source breakdown voltage of -40V minimum and a typical transconductance of 22mS at 1kHz. The device exhibits an input noise voltage of 0.9nV/√Hz at 1kHz and 1.4nV/√Hz at 10Hz. Drain-to-source saturation current ranges from 18mA to 30mA with VDS=10V and VGS=0. Input capacitance is typically 20pF maximum. Continuous power dissipation is 400mW at +25°C.

Feature Summary

Ultra-low noise performance optimized for both high and low frequencies
High input impedance with narrow IDSS range for design stability
Direct pin-for-pin replacement for Toshiba's 2SK170
Uniquely linear VGS transfer function for audio front-end stability

Applications

Audio amplifiers and preamplifiers
Discrete low-noise operational amplifiers
Guitar pickups and effects pedals
Microphones and acoustic sensors
Chemical and radiation detectors

Procurement Notes

Verify the specific grade suffix (A, B, C, or D) matches the required IDSS range for your circuit design. Confirm the package type is TO-92 3L as specified. Ensure RoHS compliance requirements are met by checking the ordering information section. Contact the manufacturer directly for custom specification selections or tighter noise tolerances not covered by standard grades.

Selection Notes

Select the LSK170D when a higher drain-to-source saturation current range (18mA to 30mA) is required compared to other grades. This grade is suitable for applications needing specific biasing points within that current window while maintaining ultra-low noise characteristics. Consider the narrow IDSS range benefits for low-voltage portable battery-operated designs where consistent performance across units is critical.

Part Context

The LSK170 series includes variants available in SOT-23, TO-92, and SOT-89 packages. The LSK170D specifically denotes the highest IDSS grade within this lineup. The series serves as an improved functional replacement for Interfet models IF1320, IF1330, IF1331, and IF4500. For monolithic-dual equivalent needs, the LSK389 series is referenced.

Replacement Considerations

The datasheet confirms direct pin-for-pin replacement for Toshiba's 2SK170. It also lists improved functional replacements for Interfet IF1320, IF1330, IF1331, and IF4500. Verify electrical compatibility before substituting these older part numbers.