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The MM HV MELF resistor series offers significant advantages compared to conventional thin film chip resistors. The cylindrical ceramic substrate is covered by a high-quality homogeneous metal film resistive layer. Its cylindrical shape results in a larger substrate volume and resistive element area as compared to chip resistors, allowing for a higher power dissipation. A modified helical laser trimming cut applied to the resistive film allows for operation at high voltages, and uniform distribution of thermal energy across the entire resistive element, when the resistor is in use. As a result, the MELF resistor's stability is enhanced and its pulse load capability increased.
PTM Published on: 2018-03-27