BF821

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BF821

Bipolar Transistors - BJT

  • Manufacturer
  • Mfr. Part #BF821
  • Package
  • Datasheet
  • In Stock15266

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Specifications

Overview

Description

BF821 typically refers to a course or module related to business finance, often found in academic programs. It covers fundamental concepts in finance, including financial analysis, investment decision-making, capital budgeting, and risk management. The course aims to equip students with the necessary skills to understand financial statements, assess the financial health of organizations, and make informed financial decisions. Key topics may include time value of money, cost of capital, financial markets, and valuation techniques. Students may also learn about financial planning and the importance of ethical considerations in finance. Overall, BF821 serves as a foundational course for those pursuing careers in finance and related fields.

Features

The BF821 is a versatile, low-noise amplifier designed for various RF applications. Key features include:
1. Frequency Range: Typically operates in the UHF and VHF bands, enhancing weak RF signals.
2. Low Noise Figure: Offers a low noise figure, ensuring minimal signal degradation and maintaining signal integrity.
3. High Gain: Provides significant amplification, often exceeding 20 dB, enabling better signal processing.
4. Wide Dynamic Range: Capable of handling a broad range of input signal levels without distortion.
5. Temperature Stability: Designed to function reliably across a wide temperature range, ensuring consistent performance in different environments.
6. Compact Design: Small form factor for easy integration into various systems, including portable devices.
7. Power Supply Flexibility: Compatible with different power supply voltages, enhancing versatility in application designs.

These features make the BF821 suitable for applications such as communication systems, signal processing, and RF front-end modules.

Package

The BF821 is typically packaged in a SOT-23 surface mount package. This compact form factor is designed for efficient space usage on printed circuit boards, making it suitable for various electronic applications, including RF and low-noise amplifiers.

Pinout

The BF821 is a dual MOSFET RF amplifier, primarily used in low-noise applications within RF front-end systems. It typically comes in a 6-pin package.
The pin configuration and their functions are as follows:
1. Pin 1: Source (S1) of the first MOSFET.
2. Pin 2: Gate (G1) of the first MOSFET.
3. Pin 3: Drain (D1) of the first MOSFET.
4. Pin 4: Drain (D2) of the second MOSFET.
5. Pin 5: Gate (G2) of the second MOSFET.
6. Pin 6: Source (S2) of the second MOSFET.
The device is designed for use in applications such as RF amplifiers in communication systems, offering low noise figure and high gain, making it suitable for enhancing weak signals.

Manufacturer

The BF821 is manufactured by NXP Semiconductors, a global semiconductor company based in the Netherlands. NXP specializes in developing high-performance mixed-signal and standard product solutions, which are used in various applications, including automotive, identification, mobile, and IoT (Internet of Things). The company is known for its innovation in secure connectivity and smart technologies, catering to a wide range of industries. NXP's products include microcontrollers, processors, and RF solutions, making it a key player in the semiconductor market.

Application

The BF821 is a dual gate MOSFET often used in RF and microwave applications. Key areas include RF amplifiers, mixers, and oscillators in communication systems, as well as in TV and radio receivers. Its high gain and low noise characteristics make it suitable for low-noise amplification in wireless devices, satellite communications, and signal processing applications. Additionally, it is utilized in instrumentation for signal detection and amplification.

Equivalent

The BF821 chip is a low-noise amplifier (LNA) often used in RF applications. Equivalent products include the BFP420, MMBF5515, and BFG540. These alternatives offer similar performance characteristics in terms of noise figure and frequency response. Always verify specifications to ensure they meet your application requirements.

Shipping

Shipping MethodsWe

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Shipping Fee Reference (DHL/FedEx):

DHL: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 2-5 business days.

FedEx: Shipping cost ranges from $25-$40 (0.5kg), with an estimated delivery time of 3-7 business days.

UPS: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 3-7 business days.

TNT: Shipping cost ranges from $25-$65 (0.5kg), with an estimated delivery time of 3-7 business days.

EMS: Shipping cost ranges from $30-$50 (0.5kg), with an estimated delivery time of 7-15 business days.

Registered Air Mail: Shipping cost is $2-$4 (0.1kg), with an estimated delivery time of 5-20 business days.

Payments

Payment Methods

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2. Credit/ Debit Card

3. Wire Transfer

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