Littelfuse Inc.
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TRF250-120T
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TRF250-120T

Product Overview

Category

The TRF250-120T belongs to the category of electronic components, specifically in the realm of surface mount resistors.

Use

It is commonly used in electronic circuits to limit current or divide voltages.

Characteristics

  • Resistance: 120 ohms
  • Power Rating: 0.25 watts
  • Tolerance: ±1%
  • Temperature Coefficient: 100 ppm/°C
  • Operating Temperature Range: -55°C to +155°C

Package

The TRF250-120T is typically available in a surface mount package.

Essence

This resistor is essential for maintaining precise control over current and voltage levels within electronic circuits.

Packaging/Quantity

It is usually packaged in reels containing a specific quantity, such as 5000 pieces per reel.

Specifications

  • Resistance: 120 ohms
  • Power Rating: 0.25 watts
  • Tolerance: ±1%
  • Temperature Coefficient: 100 ppm/°C
  • Operating Temperature Range: -55°C to +155°C

Detailed Pin Configuration

The TRF250-120T has two terminals for surface mounting onto circuit boards. The pin configuration is as follows: - Pin 1: Connected to one end of the resistor - Pin 2: Connected to the other end of the resistor

Functional Features

  • Precise resistance value
  • Stable performance over a wide temperature range
  • Compact size for space-constrained applications

Advantages

  • High precision and accuracy
  • Reliable performance in varying environmental conditions
  • Suitable for compact and densely populated circuit boards

Disadvantages

  • Sensitive to excessive heat due to its small size
  • Surface mount installation may require specialized equipment

Working Principles

The TRF250-120T operates based on the fundamental principle of electrical resistance, where it restricts the flow of current in a circuit, thereby controlling voltage levels and dissipating power in the form of heat.

Detailed Application Field Plans

The TRF250-120T is widely used in various electronic devices and systems, including: - Consumer electronics - Automotive electronics - Industrial control systems - Telecommunications equipment

Detailed and Complete Alternative Models

Some alternative models to the TRF250-120T include: - TRF250-121T (121 ohms, similar specifications) - TRF250-119T (119 ohms, similar specifications) - TRF251-120T (higher power rating version)

In conclusion, the TRF250-120T surface mount resistor offers precise resistance and stable performance, making it an essential component in a wide range of electronic applications.

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Перелічіть 10 типових запитань і відповідей, пов’язаних із застосуванням TRF250-120T у технічних рішеннях

  1. What is the TRF250-120T?

    • The TRF250-120T is a high-power RF transistor designed for use in various technical solutions, particularly in radio frequency applications.

  2. What are the key specifications of the TRF250-120T?

    • The TRF250-120T features a power output of 250 watts, operates at a frequency range of 1.8 to 250 MHz, and offers high efficiency and reliability.

  3. In what technical solutions can the TRF250-120T be used?

    • The TRF250-120T is commonly employed in RF amplifiers, transmitters, and other communication systems requiring high-power RF signals.

  4. What are the typical operating conditions for the TRF250-120T?

    • The TRF250-120T operates under standard RF power supply voltages and currents, typically within the range of 28 to 50 volts and 10 to 20 amps.

  5. How does the TRF250-120T compare to similar RF transistors on the market?

    • The TRF250-120T stands out for its high power output, wide frequency range, and excellent efficiency, making it a preferred choice for many RF applications.

  6. What cooling methods are recommended for the TRF250-120T?

    • Adequate thermal management is crucial for the TRF250-120T, and it is often cooled using heat sinks, fans, or liquid cooling systems to maintain optimal operating temperatures.

  7. Are there any specific precautions to consider when integrating the TRF250-120T into a technical solution?

    • It's important to ensure proper matching of input and output impedances, as well as protection against overvoltage and overcurrent conditions to safeguard the transistor.

  8. Can the TRF250-120T be used in amateur radio applications?

    • Yes, the TRF250-120T is suitable for use in amateur radio transmitters and amplifiers, providing high-power RF capabilities for enthusiasts and hobbyists.

  9. What are the typical reliability and lifespan expectations for the TRF250-120T?

    • When operated within specified parameters and with proper cooling, the TRF250-120T can offer a long service life and reliable performance in technical solutions.

  10. Where can I find detailed application notes and reference designs for implementing the TRF250-120T in my project?

    • Application notes, reference designs, and technical support for the TRF250-120T can be obtained from the manufacturer's website or through authorized distributors.