2N4861

Jfets Overview

The Microchip Technology 2N4861 is a silicon N-channel Junction Field-Effect Transistor (JFET) designed for small-signal applications. It utilizes a TO-18 metal can package with three pins, suitable for through-hole mounting. The device operates in depletion mode and features a round-end cylindrical form factor. Key electrical characteristics include a maximum drain-source voltage of 30V and a maximum power dissipation of 360mW. The component supports a continuous drain current of up to 50mA and maintains a low on-resistance of 60 ohms. It is classified under the transistors sub-category and carries the Microchip Technology trademark.

Jfets Feature Summary

• Utilizes silicon junction FET technology for reliable small-signal amplification
• Features a robust metal can TO-18 package for durable through-hole integration
• Operates in depletion mode with fast switching capabilities

Jfets Applications

• Small-signal amplification circuits
• Low-noise pre-amplifier stages
• High-speed switching applications

Jfets Procurement Notes

Verify the specific ordering suffix when sourcing this component, as variations may exist within the product line. Confirm that the received unit matches the TO-18 package style and N-channel configuration specified in the official datasheet. Ensure compliance with relevant environmental standards prior to integration into final assemblies.

Jfets Selection Notes

Select the 2N4861 for designs requiring a rugged N-channel JFET with a 30V breakdown voltage. Consider its 360mW power rating and 50mA current capacity for appropriate thermal management. The TO-18 package is ideal for legacy or high-reliability through-hole PCB layouts where compact surface-mount options are unsuitable.

Jfets Part Context

This component belongs to the broader family of discrete semiconductor transistors manufactured by Microchip Technology. It serves as a fundamental active element in analog electronics, distinct from integrated circuits or logic devices. The part number identifies a specific silicon-based junction field-effect transistor optimized for linear and switching operations in electronic systems.

Jfets Replacement Considerations

Publicly confirmed substitute part numbers for the 2N4861 were not identified in available documentation. Engineers should consult official cross-reference lists or manufacturer guidelines to identify compatible alternatives that match the required electrical parameters and physical package dimensions.