SFR25H0009312FR500

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Through Hole Resistors are a type of passive component used in many electronic circuits. These components are typically used in circuits to limit the flow of electrical current, causing resistance to reduce the electrical power consumed by the circuit. The SFR25H0009312FR500 is a type of through hole resistor, which consists of a plastic shell filled with resistive material. It is one of the most commonly used through hole resistors with a wide range of applications.

The SFR25H0009312FR500 in particular is able to withstand a maximum power rating of 125 mW and works with a maximum voltage rating of 400 V. The resistor can withstand temperatures of up to 80°Celsius, making it suitable for a wide range of environments, and its temperature coefficient of resistance (TCR) is ±100ppm/°C - which is very low for through hole resistors.

The construction of through hole resistors compromises of a fixed resistor which is composed of a resistive element, a support material, and the shell. The resistor’s physical construction is designed in such a manner that electric current is restricted from flowing through and the resistance is ultimately determined by the material between the two contact terminals. This type of construction allows through hole resistors to have a greater tolerance at higher operating temperatures.

A simple example to illustrate the working principle of a through hole resistor is in the form of a variable resistor. This is used to control the current which passes through the resistor, which in turn provides the desired resistance value. In order to achieve this, the shell of the resistor is divided into numerous segments - each filled with resistive material. When the contact terminals of the resistor are attached to the metal strips which divide the segments, the resistance value of the resistor is varied.

The main advantage of through hole resistors is that they can be easily mounted onto printed circuit boards (PCBs). The construction of the resistor allows for easy soldering to a PCB, as well as secure mounting. This makes it a popular choice for most electronic circuits due to its low-cost, simple installation and thermal stability. Additionally, the resistor can be placed in very close proximity to other components on the circuit board, which in turn reduces the area required for an electronic circuit to be designed.

The SFR25H0009312FR500 is a highly reliable and resistant through hole resistor which has wide applications. It is most commonly used in domestic and automotive electronics, as well as in the manufacture of control and safety devices. It is also often used as a load resistor, so as to protect the circuit against nuisance tripping and false signalling. In high power circuits, it is also used as a dummy resistor to ensure that the actual component is not subjected to excessive stress.

The SFR25H0009312FR500 through hole resistor is a versatile and reliable component which can be used in a wide range of applications. Its low TCR and temperature ratings make it suitable for many harsh environments and its easy mounting makes it a cost-effective choice for any circuit design.

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