H421RBDA

Through Hole Resistors

Through-hole resistors are a type of resistor that is mounted on a printed circuit board and used for various electrical applications. These resistors are typically made of a combination of ceramic, metal, and other conducting materials. They are designed to have controlled electrical resistance throughout their structure, which makes them ideal for use on printed circuit boards for conducting electricity, controlling current flow, and providing protection. In this article, we\'ll discuss the application field and working principle of H421RBDA through-hole resistors.

Application Field

H421RBDA is a three-terminal precision through-hole resistor. Due to its three-terminal design, it is suitable for many electrical applications such as current sensing, signal processing, voltage divider networks, and more. This type of resistor is also suitable for use in high frequency applications, as it has extremely high frequency stability. H421RBDA also has high accuracy of 4% and low temperature coefficient.

This type of through-hole resistor is commonly used in power supplies, output stages of audio amplifiers, power circuits, as well as in automotive and industrial electronics. It can also be used in communication and data transmission applications, such as LANs, modems, switches, and connectors. As it has low temperature coefficient, it is well suited for temperature-sensitive applications.

Working Principle

H421RBDA through-hole resistors are composed of four separate components: an insulating ceramic substrate, a metal alloy resistor element, a lead frame, and an encapsulant. The metal alloy resistor element is made of a special alloy, which is then covered with an epoxy coating. This creates a controlled electrical resistance throughout the resistor element, allowing the current to be controlled precisely.

When power is applied to the resistor, the current flows through the resistor element and is redirected to the lead frame, where it is further regulated before it is transferred to the printed circuit board. The encapsulant in the resistor ensures that the element is protected from the environment and provides stability while current is passing through it. The four components combine to create a reliable and durable electrical component.

H421RBDA through-hole resistors provide versatility and dependability in multiple applications. They are easy to install and require minimal maintenance. Their low temperature coefficient ensures high accuracy, making them ideal for use in temperature-sensitive applications. Their high precision and frequency stability make them suitable for high-end applications, such as LANs, modems, switches, and connectors.

Overall, H421RBDA through-hole resistors offer flexibility, dependability, and accuracy. They are suitable for use on printed circuit boards in power supplies, output stages of audio amplifiers, power circuits, and automated control systems. In addition, their high frequency stability makes them ideal for use in communication and data transmission applications.