2N4392

Jfets Overview

The Microchip Technology 2N4392 is an N-channel silicon small-signal Junction Field-Effect Transistor (JFET) designed for low-noise and fast-switching applications. It features a Gate-to-Source Breakdown Voltage of -40 V, a Drain-to-Source Saturation Current minimum of 25 mA, and a Gate-to-Source Cutoff Voltage ranging from -2 V to -5 V. The device supports continuous power dissipation up to 1800 mW at 25°C with a derating factor of 12 mW/°C. Operating junction temperatures range from -55°C to 125°C, while storage temperatures extend from -65°C to 150°C. Static characteristics include a typical gate leakage current below 50 pA at room temperature.

Jfets Feature Summary

• Utilizes InterFET N0132S geometry for optimized performance
• Provides low noise operation with a typical input noise density of 1.2 nV/√Hz
• Engineered for fast switching capabilities in analog circuits
• Available in Through-Hole, Surface Mount, and Bare Die package options

Jfets Applications

• Low on-resistance analog switches
• Chopper stabilization circuits
• Commutator designs

Jfets Procurement Notes

Verify the specific ordering suffix to confirm the required package type, as the base part number covers multiple configurations including TO-18, TO-92, SOT-23, and bare die variants. Confirm RoHS compliance status and binning requirements directly with the manufacturer or authorized distributors before finalizing procurement specifications.

Jfets Selection Notes

Select the 2N4392 when a moderate saturation current of 25 mA minimum is required alongside a cutoff voltage between -2 V and -5 V. This model offers a balance between the higher current capability of the 2N4391 and the lower cutoff voltage of the 2N4393, making it suitable for general-purpose analog switching where precise gate control is necessary.

Jfets Part Context

The 2N4392 belongs to the InterFET 2N4391-2-3 series of N-channel JFETs manufactured by Microchip Technology. This family shares common electrical limits such as the -40 V breakdown voltage but varies in saturation current and cutoff voltage parameters to suit different circuit requirements.

Jfets Replacement Considerations

Direct functional substitutes within the same series include the 2N4391 and 2N4393, though their saturation currents and cutoff voltages differ significantly. Verify pinout compatibility across TO-18, TO-92, and SOT-23 packages when considering alternative package types.