MQ2N4393UB/TR

Overview

The MQ2N4393UB/TR is an N-channel Silicon Junction Field-Effect Transistor (JFET) manufactured by Microchip Technology. Designed for surface-mount applications, it utilizes a SMD-3 package configuration. The device supports a wide operating temperature range from -65°C to +200°C. Key electrical characteristics include a drain-source breakdown voltage of 30 V and a gate-source breakdown voltage of 30 V. It provides a continuous drain current capacity of 175 mA with a maximum power dissipation rating of 1.8 W.

Feature Summary

• Utilizes silicon technology for robust analog switching performance
• Supports high-temperature operation up to 200°C
• Features low on-resistance for efficient signal conduction
• Designed for automated assembly via tape-and-reel packaging

Applications

• Analog switches
• Chopper circuits
• Sample-and-hold systems
• Normally-on switch configurations

Procurement Notes

Verify the specific suffix designation to confirm the tape-and-reel packaging format required for automated surface-mount assembly processes. Ensure that the selected component variant aligns with the necessary thermal management requirements for high-temperature environments exceeding standard industrial limits. Confirm compatibility with the target PCB footprint specifications prior to integration into the final design.

Selection Notes

Select this component when designing circuits requiring normally-on JFET behavior with high-temperature resilience. The specified breakdown voltages and current ratings suit moderate-power analog signal routing. Evaluate the thermal constraints of the application against the 1.8 W dissipation limit. Consider the SMD-3 package dimensions for space-constrained board layouts requiring reliable surface-mount attachment.

Part Context

This part belongs to the Microchip MQ series of junction field-effect transistors. These devices are engineered for demanding analog applications where low distortion and fast switching are critical. The series offers hermetic-like reliability in modern surface-mount formats, bridging traditional discrete transistor performance with contemporary manufacturing needs for high-volume production environments.

Replacement Considerations

Cross-reference with other N-channel JFETs offering similar 30 V breakdown and SMD-3 packaging. Verify pinout compatibility and thermal characteristics before substituting. Ensure alternative components meet the same high-temperature operational standards if deployed in extreme environments.