FCR3WSJT-73-820K

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Through Hole Resistors

A through hole resistor, referred to as a leaded resistor, is a wirewound resistor which utilizes holes drilled into a substrate material to mount and fix the terminals into place. Through hole resistors are often used in applications of long-term durability or high temperature environments, in which the added strain relief of the mounting holes is beneficial. FCR3WSJT-73-820K is a specific model of through-hole resistor manufactured by the company KWK, Inc.

Components of typical through-hole resistors typically contain resistance elements such as carbon, metal, and metal-oxide. An insulating tube next surrounds the central resistance element. Lead wire terminations then extend out from both ends of the insulating tube. Each lead wire is made from a brass or tinned copper core, with an insulation sheath of molded plastic, silicone, or other suitable materials. The terminals are then soldered into the corresponding board to make the electrical connection.

The basic working principle of a through-hole resistor is simple. Electrical current is sent from one terminal to the other, and the resistance element in the center produces a voltage drop. By changing the resistance element used in the resistor, a different voltage drop will be created. This resistance element, as previously mentioned, can be made from a variety of materials, including carbon, metal, and metal-oxide, allowing the user to select a resistor with the appropriate resistance levels for their application.

The FCR3WSJT-73-820K through-hole resistor is a good example of how a resistor can be specifically designed for an application. This resistor is designed for use in low-noise, high-speed circuit boards, featuring a low noise figure as well as low distortion. It is also a relatively large resistor, with an outer diameter of 73.5mm, so it is ideal for environments with high-vibration levels. The resistance element is made from metal-oxide, and the terminals are both lead-tin alloy, making it a long-lasting and durable component.

In summary, through-hole resistors, and the particular model FCR3WSJT-73-820K, are commonly used in a variety of applications, from low-noise and high-speed circuit boards to environments with high-vibration levels. The resistance element can be made from a variety of materials, allowing the user to select the appropriate resistance levels for their application. The unique leaded design of through-hole resistors adds strain relief and makes them especially suited for long-term durability and high temperature environments.

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