2N4859UB/TR

Jfets Overview

The Microchip Technology 2N4859UB/TR is a single N-channel Silicon Junction Field-Effect Transistor (JFET) designed for surface-mount applications. It features a maximum drain-source breakdown voltage of 30 V and a gate-source breakdown voltage of 30 V. The device supports a continuous drain current of 175 mA with a typical on-resistance of 25 Ohms. Power dissipation is rated at 1.8 W, allowing operation within an extended temperature range from -65°C to +200°C. Packaged in a compact SMD-3 configuration, this component serves as a robust discrete semiconductor solution for high-reliability electronic circuits.

Jfets Feature Summary

• Utilizes silicon technology for stable JFET performance
• Supports surface-mount installation via SMD-3 package
• Operates reliably across extreme temperatures up to 200°C

Jfets Applications

• High-temperature analog signal processing
• Precision low-noise amplification stages
• Constant current source implementations

Jfets Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm package type and tape-and-reel specifications. Ensure that the requested quantity meets the manufacturer's minimum order requirements before finalizing procurement. Cross-reference the Mouser part number 579-MQ2N4859UBTR for accurate distributor identification and availability status.

Jfets Selection Notes

Select this component when a single N-channel JFET with a 30 V breakdown rating is required for surface-mount designs. The 175 mA current capability and 25 Ohm on-resistance define its suitability for specific load conditions. Verify that the operating environment remains within the specified -65°C to +200°C thermal limits to ensure long-term reliability.

Jfets Part Context

This device belongs to the Microchip 2N485x series of JFETs, which are characterized by their high-temperature stability and rugged construction. These components are engineered for demanding environments where standard silicon devices may fail. The UB suffix typically denotes a specific surface-mount package variant optimized for automated assembly processes.

Jfets Replacement Considerations

Consult official substitution guides for compatible alternatives. Verify pinout compatibility and electrical parameter margins before replacing the original component.