2N4859UB-JFET-NChannel Overview
The 2N4859UB is an N-channel Junction Field Effect Transistor (JFET) designed for low-noise, high-frequency amplifier applications. It features a robust construction ideal for analog signal amplification and switching circuits. With a low gate leakage current and stable electrical characteristics, this JFET enhances circuit reliability and sensitivity in industrial and instrumentation designs. Its parameters allow precise control of channel conductivity, making it well-suited for use in audio preamplifiers, RF amplifiers, and buffer stages. The device is offered in a compact package that supports efficient thermal management and easy integration into complex systems. For more details, visit IC Manufacturer.
2N4859UB-JFET-NChannel Technical Specifications
| Parameter | Specification | Unit |
|---|---|---|
| Drain-Source Voltage (VDS) | 25 | V |
| Gate-Source Voltage (VGS) | -25 | V |
| Drain Current (ID) | 10 | mA |
| Gate Leakage Current (IGSS) | 1 | nA (max) |
| Gate-Source Cutoff Voltage (VGS(off)) | -0.5 to -6.0 | V |
| Forward Transfer Admittance (|yfs|) | 1000 | ??S (typ) |
| Total Capacitance (Ciss) | 10 | pF (typ) |
| Operating Temperature Range | -55 to +150 | ??C |
2N4859UB-JFET-NChannel Key Features
- Low gate leakage current: Ensures minimal noise contribution, critical for high-sensitivity analog circuits.
- Wide operating voltage range: Supports up to 25 V drain-source voltage, allowing flexibility across various power supply conditions.
- High forward transfer admittance: Provides improved gain and bandwidth performance in amplifier designs.
- Stable cutoff voltage range: Enhances predictable switching and linear operation in signal processing tasks.
- Compact package design: Facilitates efficient heat dissipation and easy PCB layout integration.
- Robust temperature tolerance: Operates reliably from -55??C up to +150??C for demanding industrial environments.
Typical Applications
- Low-noise preamplifiers in audio and instrumentation systems, where signal integrity is critical, leveraging the device??s low gate leakage and stable gain characteristics.
- Radio frequency (RF) amplifiers requiring high-frequency response with minimal distortion and noise interference.
- Analog switches and buffer stages in control and measurement devices, benefiting from the predictable cutoff voltage and low leakage current.
- Voltage-controlled resistors and attenuators in precision signal conditioning circuits, taking advantage of the device??s linearity and wide dynamic range.
2N4859UB-JFET-NChannel Advantages vs Typical Alternatives
This N-channel JFET offers superior noise performance and low input leakage current compared to standard MOSFETs and bipolar transistors, making it ideal for sensitive analog front-end circuits. Its stable cutoff voltage and wide operating temperature range improve reliability and accuracy in industrial applications. Additionally, the device??s high forward transfer admittance ensures efficient signal amplification with minimal distortion, providing a clear advantage in precision amplifier designs.
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2N4859UB-JFET-NChannel Brand Info
The 2N4859UB is a product commonly associated with established semiconductor manufacturers specializing in discrete analog components. It is a widely recognized N-channel JFET used in industrial and instrumentation applications. This device adheres to industry standards for quality and reliability, often
