2N4861JAN02

Jfets Overview

The 2N4861JAN02 is an N-channel Junction Field-Effect Transistor (JFET) manufactured by Vishay Siliconix. It belongs to the military-grade JANTXV series, designed for high-reliability applications requiring strict performance consistency. The device utilizes silicon technology and features a hermetically sealed BCY package configuration. Key electrical characteristics include a gate-source cutoff voltage of -3.5 V minimum and a drain current of 1 mA at specified bias conditions. The component supports operation up to a maximum junction temperature of 200 °C with a power dissipation rating of 0.36 W.

Jfets Feature Summary

• Hermetically sealed construction ensures environmental protection and long-term stability in harsh operating conditions.
• Military-grade qualification provides enhanced reliability and consistent electrical parameters for critical systems.
• High thermal tolerance allows sustained operation at elevated junction temperatures without performance degradation.

Jfets Applications

• Precision analog signal processing circuits
• Low-noise amplifier stages in communication equipment
• High-reliability aerospace control systems

Jfets Procurement Notes

Verify the specific suffix designation against the manufacturer's official documentation to confirm exact testing levels and screening requirements. Ensure that the procurement channel sources components directly from authorized distributors or the manufacturer to prevent counterfeit parts. Confirm RoHS compliance status as military variants may differ from commercial standards. Validate package integrity upon receipt to maintain hermetic seal effectiveness.

Jfets Selection Notes

Select this component when designing circuits requiring stable constant-current source behavior or high-input impedance amplification. Compare the gate-source cutoff voltage specifications against circuit biasing requirements to ensure proper operation. Consider the thermal management capabilities relative to the 0.36 W power dissipation limit. Evaluate the physical package dimensions for compatibility with existing board layouts and mounting constraints.

Jfets Part Context

This part is part of the 2N4856 through 2N4861 JFET family produced by Vishay Siliconix. These devices are standardized for use in demanding electronic environments where standard commercial transistors may fail. The JAN02 suffix typically denotes a specific packaging and testing format within the military specification framework, distinguishing it from bulk or reel-packaged commercial equivalents.

Jfets Replacement Considerations

Direct substitutes include other JANTXV series JFETs from Vishay such as the 2N4856JAN02 or 2N4860JAN02, provided pinout and electrical tolerances match. Cross-reference datasheets for alternative manufacturers offering MIL-SPEC JFETs with identical BCY footprints and comparable Vgs(off) ranges.