2N4392-E3

Jfets Overview

The Vishay Siliconix 2N4392-E3 is an N-channel Junction Field-Effect Transistor (JFET) designed for high-speed analog switching applications. It features a Gate-Source Cutoff Voltage (VGS(off)) ranging from -2 V to -5 V and a maximum Drain-Source On-Resistance (rDS(on)) of 60 Ω at ID = 1 mA. The device exhibits a typical turn-on time (tON) of 4 ns, low input capacitance below 3.5 pF, and negligible gate leakage current typically under 50 pA at room temperature. It operates within a junction temperature range of -55°C to 200°C.

Jfets Feature Summary

• Fast switching performance with a typical turn-on time of 4 ns
• Low on-resistance suitable for demanding analog circuits
• High off-isolation characterized by extremely low drain cutoff current
• Low capacitance ensuring minimal signal distortion

Jfets Applications

• Analog switches
• Choppers
• Sample-and-hold circuits
• Commutators

Jfets Procurement Notes

Verify the component's authenticity against official Vishay documentation before integration. Confirm that the specific package variant matches the design requirements, as the series includes through-hole and surface-mount options. Ensure the supply chain provides traceable parts compliant with RoHS directives. Validate all electrical parameters against the datasheet limits prior to final assembly.

Jfets Selection Notes

Select this component when designing circuits requiring fast switching speeds and low insertion loss. The -2 V to -5 V cutoff voltage range makes it appropriate for standard logic-level control interfaces. Consider the thermal derating characteristics if operating near the maximum power dissipation limit. Evaluate the low noise profile for sensitive signal paths where minimal error voltage is critical.

Jfets Part Context

This part belongs to the 2N/PN/SST4391 series of N-channel JFETs manufactured by Vishay Siliconix. The series is engineered for superior analog switching characteristics, offering low noise and high off-isolation. While the 2N prefix denotes the hermetically sealed TO-18 metal can package, the underlying semiconductor technology remains consistent across the family variants.

Jfets Replacement Considerations

The 2N4391 and 2N4393 are electrically similar devices within the same series but feature different cutoff voltage ranges (-4 to -10 V and -0.5 to -3 V, respectively). Verify that the specific VGS(off) and rDS(on) tolerances of these alternatives align with the circuit design constraints before substitution.