MX2N4091UB

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. The device features a drain-source breakdown voltage of 40 V and a gate-source breakdown voltage of -40 V. Key electrical parameters include a zero-gate-voltage drain current of 30 mA, a continuous drain current of -100 pA, and an on-resistance of 30 Ohms. Power dissipation is rated at 360 mW, with an operating temperature range spanning from -65 C to +175 C.

Feature Summary

• Single N-channel JFET configuration for discrete circuit applications
• Silicon-based construction within a TO-18-3 hermetic metal can package
• High thermal stability supporting operation up to +175 C

Applications

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

Procurement Notes

Verify the specific suffix 'UB' against the official Microchip datasheet to confirm pinout orientation and hermetic sealing requirements. Ensure the procurement channel provides traceable documentation matching the manufacturer's part identification. Confirm that the received components align with the specified TO-18-3 package dimensions and lead configurations before integration into the design.

Selection Notes

Select this component when a high-voltage N-channel JFET with low leakage characteristics is required. The 40 V breakdown rating suits moderate voltage applications. Consider the TO-18-3 package constraints for board layout. Verify that the 30 mA saturation current meets the circuit's biasing needs. Evaluate the thermal management capabilities given the 360 mW power dissipation limit in the intended environment.

Part Context

This part belongs to the Microchip JFET family, specifically designed as a discrete semiconductor switch or amplifier element. It serves as a fundamental building block for analog electronics requiring high input impedance. The product line emphasizes reliability and performance in demanding environments, distinguishing it from standard commercial-grade transistors through its specialized material and packaging choices.

Replacement Considerations

The MV2N4091 is a documented alternative offering identical electrical specifications and package type. Verify compatibility regarding any minor manufacturing variations between these specific part numbers before substitution.