2N3819 APM PBFREE

Overview

The 2N3819 APM PBFREE is an N-channel Junction Field-Effect Transistor (JFET) manufactured by Central Semiconductor Corp. It features a maximum drain-source voltage of 40V and a gate-source voltage rating of 40V. The device supports a continuous drain current of 100mA with a power dissipation capacity of 315mW. Key electrical characteristics include a zero-bias drain current ranging from 1 to 5mA and a gate cutoff voltage between -0.5V and -6V. The component utilizes a TO-92-3 (TO-226AA) leaded package for through-hole mounting.

Feature Summary

• Provides stable amplification and switching capabilities in low-noise analog circuits
• Features high input impedance suitable for buffer and impedance matching applications
• Constructed using silicon technology for reliable performance across specified temperature ranges

Applications

• Low-noise audio preamplifier stages
• High-impedance buffer circuits
• Constant current source implementations
• Voltage-controlled resistor configurations

Procurement Notes

Verify the specific suffix APM against the official datasheet to confirm binning or gain grouping requirements. Ensure the ordering documentation explicitly states Pb-free compliance to match RoHS standards. Cross-reference the manufacturer part number with authorized distributor catalogs to confirm availability and authenticity before finalizing procurement plans.

Selection Notes

Select this component when designing circuits requiring low noise figures and high input impedance. Compare the zero-bias drain current specifications against circuit biasing requirements to ensure proper operating point stability. Verify that the TO-92 package thermal characteristics meet the power dissipation limits of the target application environment.

Part Context

This JFET belongs to the standard small-signal transistor category used extensively in analog signal processing. It serves as a fundamental active element in amplifier designs where signal integrity and minimal distortion are critical. The component represents a legacy but widely supported semiconductor solution for general-purpose electronic systems.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided reference material. Engineers should consult official cross-reference guides or manufacturer substitution lists to identify electrically equivalent alternatives.