MFR-12FRF52-174R

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Through hole resistors are an important type of passive electronics component. They are used to provide electrical resistance and are typically used to divert, restrict or control electrical currents in a circuit. Through hole resistors have two leads which allow them to be soldered onto two points of a printed circuit. The resistance of the resistor is marked onto the body of the component typically using coloured lines.The MFR-12FRF52-174R is a through hole resistor from the MFR Series which is a range of high reliable thin film resistors designed and manufactured by the EPCOS Corporation. These resistors have a resistance range of 0.1 Ohm to 10K Ohms and have a high signal accuracy of +/-0.15%. They offer a low temperature drift coefficient with a maximum of 0.1%/K over a temperature range of -55C to +125C. These resistors are rated to 85C and with a lower price tag than the majority of thick film resistors they are a very popular component for general applications.Typically the MFR-12FRF52-174R is used in AC/ DC circuit controls, medical apparatus, power supplies, and automotive applications where accuracy and reliability are paramount. These resistors are primarily used to divert, restrict or control the electrical current passing through a circuit at a determined level and to convert electrical energy to thermal energy in order to dissipate excess current.The MFR-12FRF52-174R is a through hole resistor of the chip type meaning it is constructed using two or more semiconductor materials on the top surface of a thin layer of ceramic called an insulating substrate. The device consists of a crown like structure which sits on the substrate and is filled with different resistor elements and metal used for various purposes. The resistor elements in the device are manufactured using a Thin Film deposition process. This process involves the evaporation of metal films onto a substrate in very thin layers. The resistor film is protected by a passivating layer and electrically connected through a layer of metal and feed through contacts, which in turn provide the electrical connection between the circuit and the resistor.The resistor element is then protected by a thick layer of epoxy, which is resistant to most solvents and provides temperature stability. A gold flash is then applied to the metallisation, providing both fixation and enhanced electrical performance. The overall resistor structure is then encapsulated in glass to provide excellent corrosion protection and environmental stability. The result is a highly reliable thin film technology for repetitive applications.The MFR-12FRF52-174R has a number of features which make it an ideal choice for through hole resistors. These features include high accuracy (typically 0.1% for standard resistors), wide range of resistance value (0.1 Ohm to 10K Ohm), wide temperature range (-55C to +125C), low current noise voltage, high reliability due to the encapsulation in glass and reduced board space requirements thanks to the small footprint.

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