Thick film resistor

Abstract

Abstract PURPOSE:To remove the harmful influence of microcracks, and to obtain a highly reliable thick film by a method wherein the resistance value of the thick film is adjusted by the trimming of the pectinated auxiliary electrode which is integrally provided on an outlet electrode. CONSTITUTION:A plurality of pectinated electrodes 13a, having the same line width and length, are arranged at the same interval pitch of 200mum, for example, for use as auxiliary electrodes 13, and the length against the intended resistance value is worked out from a formula of calculation. In the case where the above-mentioned length is set in the distance from the point A of an electrode 11 and the point B of the auxiliary electrodes 13, three each of the pectinated electrodes 13a are arranged on both sides of the point B in such a manner that they are connected to a resistance film 14, and its resistance value is adjusted by the trimming of each pectinated electrode 13a. The length of the resistance film 14 is made longer by 200mum by cutting one by one the pectinated electrodes 13a of the auxiliary electrodes 13 from the side of the electrode 11, and as the resistance value changes by about 20OMEGA, the adjustment of about 940 to 1100OMEGA against the resistance value of the intended resistance value of 1kOMEGA can be possible, if the entire six pectinated electrodes 13a are trimmed using a trimming device.

Inventors

• 👤 Isao Ishigaki
• 👤 功 石垣
• 👤 Satoru Suzuki
• 👤 悟 鈴木
• 👤 Fumio Iwami
• 👤 岩見　文男
• 👤 Kozo Takada
• 👤 耕造 高田

Bibliographic Details