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What is the structure of the chip resistor electrodes and how are they plated?

April 26, 2017chip electrodes plated Resistor structure

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What is the structure of the chip resistor electrodes and how are they plated?

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Rectangular chip resistors possess two electrodes consisting of three layers over a ceramic substrate (alumina). The bottom layer is a silver-based thick film material, the middle is composed of nickel, and the top layer is tin. Please note that all ROHM chip resistors are lead-free.