ELECTRICAL APPARATUS WITH HEATING ELECTRICALLY RESISTIVE ELEMENT AND MEANS OF HEAT DISSIPATION FOR IT

摘要

PROBLEM TO BE SOLVED: To provide an electrical apparatus such as a power resistor with improved thermal conductivity on which a heating element is mounted.

SOLUTION: An electrical apparatus 10 contains a conductive resistive element 18. The resistive element 18 is arranged on a heat transfer medium in order to transport heat from the resistive element 18. The resistive element 18 contains 80/20 nickel/chromium material sputtered on the surface of an aluminum nitride substrate. The 80/20 nickel/chromium material is attached to the surface of the substrate with a thickness range from 0.5 to 25μm. The resistor of the resistive element is controlled by changing the chemical composition of the film sputtered by introducing reactant gas in a sputtering process.

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