2N4393-E3

Jfets Overview

The Vishay Siliconix 2N4393-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 -0.5 V to -3 V and a maximum Drain-Source On-Resistance (rDS(on)) of 100 Ω at ID = 1 mA. The device exhibits low noise with a typical input voltage of 3 nV/√Hz at 1 kHz, fast switching characteristics including a turn-on time of approximately 4 ns, and low capacitance below 3.5 pF. These parameters ensure negligible off-error and excellent accuracy in demanding circuit environments.

Jfets Feature Summary

• Fast switching performance with minimal delay times suitable for high-frequency operation
• Low on-resistance and low insertion loss for efficient signal transmission
• High off-isolation capability with extremely low leakage current
• Low input capacitance and noise voltage ensuring high signal integrity

Jfets Applications

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

Jfets Procurement Notes

Verify the component authenticity by checking the manufacturer marking against the official datasheet specifications. Confirm the package type matches the required form factor, as this series includes hermetically sealed metal cans and plastic variants. Ensure the specific ordering suffix aligns with the desired packaging configuration before finalizing procurement orders.

Jfets Selection Notes

Select the 2N4393-E3 when the application requires a normally-on switch with a low cutoff voltage range between -0.5 V and -3 V. This model is optimal for circuits needing low on-resistance and fast switching speeds. Consider the TO-206AA package for hermetic sealing requirements or alternative packages for surface mount assembly needs.

Jfets Part Context

This component belongs to the 2N/PN/SST4391 series of N-channel JFETs manufactured by Vishay Siliconix. The series utilizes Interfet N0132S geometry to achieve superior electrical characteristics. It serves as a specialized discrete semiconductor solution for precision analog signal processing and switching tasks within electronic systems.

Jfets Replacement Considerations

The PN4393 and SST4393 are direct functional equivalents within the same series offering identical electrical parameters. Verify that the replacement part number matches the required package style, such as TO-92 or SOT-23, to ensure physical compatibility with the existing board layout.

Jfets FAQ

What is the maximum Gate-Source Breakdown Voltage for the 2N4393?

The maximum Gate-Source Breakdown Voltage (V(BR)GSS) is -40 V.

Does the 2N4393 operate in depletion mode?

Yes, the 2N4393 is a normally-on device that operates in depletion mode.

What is the typical input noise voltage specification?

The typical equivalent input noise voltage is 3 nV/√Hz measured at 1 kHz.