2N4856-JFET-NChannel Overview
The 2N4856 is an N-channel junction field-effect transistor (JFET) designed for low-noise and low-distortion analog applications. It offers stable electrical characteristics with a high forward transfer admittance and low gate leakage current, making it suitable for amplification and switching tasks in industrial electronics. Its robust performance under varying temperature conditions ensures reliable operation in precision circuits. This device is a popular choice for engineers seeking a dependable, high-performance JFET with consistent gain and low signal interference. For detailed sourcing and technical support, consult IC Manufacturer.
2N4856-JFET-NChannel Technical Specifications
| Parameter | Symbol | Value | Unit |
|---|---|---|---|
| Drain-Source Voltage | VDS | 30 | V |
| Gate-Source Voltage | VGS | ??25 | V |
| Drain Current (DC) | ID | 10 | mA |
| Gate Current (Leakage) | IGS | 5 | nA (Max) |
| Forward Transfer Admittance | |Yfs| | 2.0 | mS |
| Pinch-Off Voltage | Vp | -2.0 to -6.0 | V |
| Power Dissipation | PD | 310 | mW |
| Operating Temperature Range | Top | -65 to +200 | ??C |
2N4856-JFET-NChannel Key Features
- Low gate leakage current: Minimizes noise in sensitive analog circuits, enhancing signal integrity.
- High forward transfer admittance: Delivers strong gain performance, critical for low-distortion amplification.
- Wide operating temperature range: Ensures stable operation from -65??C to +200??C, suitable for harsh industrial environments.
- Robust voltage ratings: With a drain-source voltage of 30V and gate-source rating of ??25V, it supports diverse applications requiring moderate voltage handling.
Typical Applications
- Low-noise preamplifiers in audio and instrumentation circuits, where signal fidelity is paramount for accurate measurement and sound reproduction.
- Analog switches and choppers in precision analog signal processing.
- Voltage-controlled resistors or variable gain amplifiers in industrial sensor interface circuits.
- Buffer stages in high-impedance voltage sensing circuits, ensuring minimal loading effect on preceding stages.
2N4856-JFET-NChannel Advantages vs Typical Alternatives
This N-channel JFET excels in low noise and low gate leakage current compared to typical bipolar transistors and MOSFETs, making it ideal for precision analog signal processing. Its stable gain characteristics and wide temperature tolerance provide enhanced reliability and accuracy in industrial conditions. The moderate voltage and current ratings support integration in both low-power and moderately demanding circuits without sacrificing performance or increasing complexity.
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2N4856-JFET-NChannel Brand Info
The 2N4856 JFET is a well-established device originally manufactured by several semiconductor companies specializing in discrete components. It is widely distributed through various IC suppliers and is recognized for consistent quality and performance. Although not tied to a single proprietary brand today, it remains a standard part number in the semiconductor industry, supported by legacy datasheets and broad availability. Engineers can find this device through trusted electronic component distributors and verified IC Manufacturer
