METHOD OF CREATING DIELECTRIC FILM OF ANODE OF HIGH-VOLTAGE TANTALUM CAPACITOR AND CAPACITOR WITH SOLID ELECTROLYTE AND OPERATING VOLTAGE OF UP TO 125 V INCLUSIVE Russian patent published in 2024 - IPC H01G9/07 H01G9/15 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering, namely to production of capacitors with solid electrolyte, in which anode of which is valve metal – tantalum, dielectric is oxide of this metal, and cathode coating is made of manganese dioxide or conducting polymer. Result is achieved due to performance of anodizing process in electrolyte containing triethylene glycol of dimethyl ether, with gradual reduction of current density during process of anode metal oxidation. Capacitor contains an anode pressed from tantalum powder with specific charge from 1,000 to 200,000 mcC/g, density from 4.5 to 9.0 g/cm³ and sintered under conditions of high vacuum and temperatures from 1,200 to 2,100 °C, dielectric, cathode coating based on manganese dioxide or conducting polymer of polyethylene dioxythiophene, carbon layer, which is a transition coating, a silver-containing layer, which is a contact coating, a non-tight shell.

EFFECT: increasing the operating voltage of capacitor to 125 V, as well as the quality of the dielectric film formed by electrochemical oxidation of the valve metal at voltages of up to 400 V.

2 cl, 3 dwg, 1 tbl