H445R3BDA

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Through-hole resistors are electronic components typically used to regulate current in a circuit. They are typically made from a combination of ceramic and metal materials and designed to resist the flow of electricity. Engineers use through-hole resistors for a variety of applications including limiting current, partitioning circuits, and protecting against electrical noise. The H445R3BDA is one such through-hole resistor with specific capabilities that lend themselves to multiple applications. This article will explain the application field, construction, and working principle of the H445R3BDA.

Construction

The H445R3BDA is a radial leaded resistor consisting of ceramic and metal elements. It is cylindrical in shape with a metal core and a ceramic layer for the resistor element. The body is coated with a silver-colored epoxy coating to help protect it from the elements. The resistor\'s leads are also coated with silver for added protection. The resistor is designed to be used in through-hole installation and measures 25x14mm.

Application Field

The H445R3BDA is designed to be an economical, general purpose resistor. It is suitable for use in a variety of applications including heating systems, industrial process control, and audio-visual equipment. Its features make it well suited for these applications. It is rated for a maximum operating temperature of 70°C, has an insulation resistance of 100Mohm, and a tolerance of ±20%. Its wide operating voltage range of between 200V and 600V AC/ DC makes it suitable for a range of applications.

Working Principle

The H445R3BDA is designed to work by providing both electrical and thermal protection to a circuit. The ceramic and metal components of the resistor work together to regulate the flow of current. The ceramic insulator acts as a dielectric, insulating the metal core, while the metal core provides the necessary resistance. When current is applied to the resistor, the ceramic material insulates the metal core and prevents a short circuit. The heat generated by the resistor is dissipated through the epoxy coating, allowing the resistor to withstand operating temperatures up to 70°C.

Conclusion

The H445R3BDA is a radial leaded resistor designed for use in through-hole installations. It is a general-purpose resistor suitable for a wide range of applications including heating systems, industrial process control, and audio-visual equipment. The resistor is designed with a combination of metal and ceramic components to provide both electrical and thermal protection. Its features, including an insulation resistance of 100Mohm and a tolerance of ±20%, make it well suited for these applications.

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