2N4857UB/TR

Jfets Overview

The 2N4857UB/TR is a silicon N-channel Junction Field-Effect Transistor (JFET) manufactured by Microchip Technology. Designed for surface-mount applications, it utilizes an LCC-3 package configuration. The device supports a Drain-Source voltage of 30 V and a Gate-Source voltage of -30 V. It handles a continuous drain current of 30 mA with a maximum power dissipation of 200 mW. Operating temperatures range from -65°C to +200°C. DC current gain ranges from 10 to 165 at -5 mA and 10 V.

Jfets Feature Summary

• High-temperature operation capability up to 200°C
• Single N-channel JFET configuration in compact SMD package
• Silicon construction for reliable small-signal performance

Jfets Applications

• High-reliability analog signal processing circuits
• Military and aerospace electronic systems
• Temperature-compensated amplifier stages

Jfets Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm package type and testing level. Ensure compatibility with high-temperature soldering profiles required for the specified operating range. Confirm RoHS status and environmental compliance requirements prior to integration into final assemblies.

Jfets Selection Notes

Select this component when a single N-channel JFET is required for high-temperature environments exceeding standard commercial limits. Compare the 30V breakdown rating against circuit voltage peaks. Evaluate the 200mW power dissipation limit relative to thermal management constraints within the LCC-3 footprint.

Jfets Part Context

This part belongs to the 2N485x series of N-channel JFETs produced by Microchip Technology. It shares functional similarities with other members like the 2N4859UB/TR but differs in specific electrical ratings such as current handling and resistance values. The UB suffix typically denotes a specific surface-mount variant within the broader product family.

Jfets Replacement Considerations

Direct substitutes include other 2N485x series devices such as 2N4859UB/TR or MX2N4861UB/TR, provided their specific electrical parameters align with the design requirements. Verify pinout compatibility and thermal characteristics before substitution.