MX2N4091

Overview

The MX2N4091UB is a single N-channel Junction Field-Effect Transistor (JFET) manufactured by Microchip Technology. It utilizes silicon technology and is housed in a TO-18-3 through-hole package. Key electrical specifications include a drain-source breakdown voltage of 40 V, a gate-source breakdown voltage of -40 V, and a maximum power dissipation of 360 mW. The device supports an operating temperature range from -65°C to +175°C.

Feature Summary

• Single N-channel JFET configuration for discrete circuit applications
• Silicon-based construction with high thermal stability
• Through-hole mounting capability in a TO-18-3 metal can package

Applications

• Low-noise analog signal amplification
• High-impedance input stages in instrumentation circuits
• Precision current source implementations

Procurement Notes

Verify the specific suffix designation during procurement, as the MX2N4091 identifier may correspond to variants such as the MX2N4091UB. Confirm RoHS compliance status and exact package type against the manufacturer's datasheet prior to ordering. Ensure that the supplier provides official documentation matching the requested part number to avoid substitution errors.

Selection Notes

Select this component when designing circuits requiring low noise performance and high input impedance. The wide operating temperature range makes it suitable for harsh environments. Compare the 40 V breakdown limits against system voltage requirements to ensure adequate safety margins. Consider the TO-18-3 package constraints for PCB layout and mechanical integration.

Part Context

This component belongs to the Microchip JFET product line, specifically designed for analog signal processing tasks. It serves as a discrete semiconductor solution for applications where integrated operational amplifiers may introduce excessive noise or insufficient input impedance. The device complements other discrete transistor offerings within the manufacturer's portfolio.