2N4091E3

Overview

The 2N4091E3 is an N-channel Junction Field-Effect Transistor (JFET) manufactured by Microchip Technology. It utilizes silicon technology and is housed in a TO-18-3 metal can package designed for through-hole mounting. The device features a single transistor configuration with a drain-source breakdown voltage of 40 V and a gate-source breakdown voltage of -40 V. Key electrical parameters include a zero-gate-voltage drain current of 30 mA, a continuous drain current rating of 100 pA, and a drain-source on-resistance of 30 Ohms. The component supports a power dissipation of 360 mW and operates within a temperature range from -65°C to +175°C.

Feature Summary

• High-temperature operation capability up to 175°C suitable for demanding environments
• Metal can packaging providing robust physical protection and thermal stability
• Silicon construction ensuring reliable performance in analog signal processing

Applications

• Analog signal amplification circuits
• Low-noise preamplifier stages
• Impedance matching networks

Procurement Notes

Verify the specific suffix E3 indicates lead-free compliance when sourcing. Confirm the TO-18-3 package dimensions match the target PCB footprint. Ensure the supplier provides official datasheets to validate the 40V breakdown ratings and 30mA IDSS specifications against design requirements.

Selection Notes

Select this component for applications requiring high-temperature stability and low input impedance characteristics typical of JFETs. Compare the 30 Ohms on-resistance and 360 mW power dissipation limits against circuit load requirements. Consider the through-hole mounting style if surface-mount alternatives are unsuitable for the mechanical constraints.

Part Context

This part belongs to the standard JFET product line offered by Microchip Technology. It serves as a discrete semiconductor solution for analog electronics, distinct from integrated circuits or microcontrollers. The TO-18-3 package is a legacy form factor often used in high-reliability or specialized industrial equipment where ruggedness is prioritized over miniaturization.

Replacement Considerations

Check for direct equivalents such as the MV2N4091 or MX2N4091UB which share identical electrical specifications and pinouts. Verify that any substitute maintains the same N-channel polarity and TO-18-3 package compatibility.