Patent ID: 11967443
Assignee: KOA CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. A method of manufacturing a chip resistor, comprising:
forming, on an insulating substrate, a resistor and electrodes connected to both ends of the resistor;
forming a first protective film made of a glass material at a position where the first protective film covers a portion of the resistor so that a connecting portion of the resistor with one of the electrodes is an exposed portion;
forming an auxiliary film made of a resin material containing conductive particles at a position where the auxiliary film is over a connecting portion between one of the electrodes and the resistor and covers a portion of the first protective film so as to entirely cover the exposed portion;
forming a second protective film made of a resin material so as to cover a portion of the auxiliary film and the first protective film;
forming an end face electrode connected to a corresponding one of the electrodes by performing sputtering of metal particles onto an end face of the insulating substrate; and
forming an external plating layer covering the end face electrode, the corresponding one of the electrodes, and the auxiliary film by performing electroplating.