Publication number: 20120291922
Abstract: A solder paste according to an aspect of the invention includes, within a flux, an activator that has a dibasic acid with a molecular weight of 250 or less, a monobasic acid with a molecular weight of 150 or greater and 300 or less, and a dibasic acid with a molecular weight of 300 or greater and 600 or less; and at least one resin additive selected from the group consisting of high-density polyethylenes and polypropylenes. The solder paste has the resin additive in an amount of 4% by weight or greater and 12% by weight or less when the total amount of the flux is taken as 100% by weight, and has a viscosity of 400 Pa·s or greater at 80° C.
December 6, 2010
November 22, 2012
ARAKAWA CHEMICAL INDUSTRIES, LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA, HARIMA CHEMICALS, INC., FUJITSU TEN LIMITED, KOKI COMPANY LIMITED, DENSO CORPORATION
Eiji Iwamura, Kazushi Gotoh, Fumio Ishiga, Takayasu Yoshioka, Masayoshi Utsuno, Atsuo Nakamura, Teruo Okochi, Masaki Sanji, Takuji Sukekawa, Kenshi Ikedo, Yoshiyuki Andoh, Takeshi Shirai, Kimiaki Mori, Rie Wada, Kensuke Nakanishi, Masami Aihara, Seishi Kumamoto