LS840 TO-78 6L ROHS

Overview

The LS840 is a monolithic dual N-channel JFET amplifier manufactured by Linear Integrated Systems, Inc. It features low noise, low drift, and low capacitance characteristics. The device operates within a junction temperature range of -55°C to +150°C. Key electrical parameters include a Drain-Source Voltage of 60 V, Continuous Drain Current of 0.5 mA, Input Capacitance of 10 pF at 20 V, and Power Dissipation of 400 mW. It is housed in a TO-78-6 through-hole package.

Feature Summary

• Monolithic dual N-channel JFET architecture
• Low noise and low drift performance
• Low input capacitance design

Applications

• Precision analog signal amplification
• Low-noise front-end circuits
• High-impedance sensor interfaces

Procurement Notes

Verify the specific package variant (TO-78-6) and RoHS compliance status directly with the manufacturer or authorized distributors. Confirm that the operating temperature range and power dissipation limits align with your thermal management requirements before finalizing procurement.

Selection Notes

Select this component for applications requiring high input impedance and minimal signal distortion. Ensure the system voltage does not exceed the 60 V Drain-Source limit. Consider the TO-78-6 package constraints for PCB layout and thermal dissipation relative to the 400 mW rating.

Part Context

The LS840 belongs to the LS840 series of linear integrated circuits, which includes variants in TO-71, PDIP, and SOIC packages. This specific model represents the dual N-channel JFET configuration optimized for low-noise applications within the Linear Integrated Systems portfolio.

Replacement Considerations

Consult official substitution lists from Linear Integrated Systems for verified equivalents. Generic JFET replacements may not match the specific low-drift and low-capacitance specifications required for precision applications.