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BF861C

Name: BF861C
Rating: 4.7 (12 reviews)

JFETs BF861C/TO-236AB///REEL 7 Q3/T4 *STANDARD MARK SMD

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資料表 BF861C DataSheet
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概述

Description

The BF861C is a low-noise, high-gain N-channel JFET (Junction Field-Effect Transistor) widely used in various analog applications, especially in RF and audio amplification circuits. Its design features a low input capacitance and high transconductance, which contribute to its excellent performance in signal processing tasks.
Key specifications include a maximum drain-source voltage (V_DS) of around 60V, a low noise figure, and a wide frequency response. The BF861C is often employed in applications such as amplifiers, mixers, and other RF circuits due to its ability to handle small signals with minimal distortion.
The device is typically housed in a TO-92 package, making it easy to integrate into circuit designs. Overall, the BF861C is favored for its reliability, performance, and versatility in electronic applications.

Features

The BF861C is a high-frequency low-noise bipolar junction transistor (BJT) designed primarily for RF and microwave applications. Key features include:
1. High Gain: Offers a high current gain (hFE), typically around 30-100, enhancing amplification capabilities.
2. Low Noise Figure: Designed to minimize noise, making it suitable for low-noise amplifier (LNA) applications.
3. Wide Frequency Range: Operational from DC to several GHz, ideal for RF applications, including communication systems.
4. High Cut-off Frequency: With a transition frequency (fT) of around 4 GHz, it supports high-speed switching and amplification.
5. Compact Package: Available in a small SOT-23 package, facilitating easy integration into compact circuit designs.
6. Temperature Stability: Designed to maintain performance over a range of temperatures, ensuring reliability in various environments.
Overall, the BF861C is widely used in RF circuits, amplifiers, and as an oscillator in telecommunications.

Package

The BF861C is typically packaged in a 3-pin SOT-23 surface-mount package.

Pinout

The BF861C is a dual-gate MOSFET RF amplifier commonly used in low-noise applications. It typically comes in a 4-lead SOT-143 package.
Pin Count:
- 4 pins
Pin Function:
1. Gate 1 (G1): Input gate for the first amplification stage.
2. Gate 2 (G2): Input gate for the second amplification stage, enabling greater gain and improved linearity.
3. Drain (D): Connected to the supply voltage; it serves as the output for the amplified signal.
4. Source (S): Ground or reference point for the device, completing the circuit.
This configuration allows for efficient amplification of RF signals, making the BF861C suitable for various communication devices.

Manufacturer

The BF861C is manufactured by NXP Semiconductors, a global semiconductor company that specializes in designing and manufacturing a wide range of electronic components and systems. NXP is known for its focus on automotive, security, and Internet of Things (IoT) applications, providing innovative solutions that enable smart, connected devices. The company was formed in 2006 as a spin-off from Philips and has since become a key player in the semiconductor industry, catering to various sectors, including automotive, industrial, mobile, and consumer electronics. NXP is recognized for its commitment to high-quality products and advanced technologies, making it a significant contributor to the advancement of modern electronics.

Application

The BF861C is a low-noise RF transistor commonly used in applications such as low-noise amplifiers (LNAs), RF front-end stages, and signal conditioning circuits. It is suitable for telecommunication systems, satellite communications, and various high-frequency applications due to its excellent gain, low noise figure, and high-frequency performance. Additionally, it can be employed in microwave and RF signal processing, providing reliable amplification in diverse electronic devices and systems.

Equivalent

The BF861C is a low-noise JFET designed for RF applications. Equivalent products include the 2N5457, 2N5486, and J310, which offer similar characteristics. However, specific parameters such as noise figure and transconductance may vary, so it's essential to check the datasheets for precise applications.