Soldering method of voltage nonlinear resistor

Abstract

Abstract PURPOSE: To achieve soldering excelling in service life characteristics without using flux, by applying ultrasonic vibrations to the element of ceramic mainly made of ZnO being silver-baked with electrode, together with lead wires in fluid solder bath, when soldering voltage nonlinear resistor. CONSTITUTION: A molding of ceramic element mainly made of ZnO with subsidiary components such as Bi 2 O 3 , Co 2 O 3 , MnO 2 , Sb 2 O 3 , Cr 2 O 3 , NiO, etc., is baked, and silver electrode is baked on the surface thereof. This element and lead wires 1 are put in a fluid solder bath 2 filled with molten solder of Pb-Sn material, and ultrasonic energy is applied thereto from an ultrasonic vibrator 3 of which frequency is 10W20kHz and output 1W10W. By removing the air layer on the surface of the element to be soldered to activate the soldering surface, soldering excelling in service life characteristics may be achieved without using flux. COPYRIGHT: (C)1980,JPO&Japio

Inventors

• 👤 Yasuo Wakahata
• 👤 Takayoshi Toyomi
• 👤 Yoshikazu Kobayashi
• 👤 Shigeo Konishi

Bibliographic Details