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公开(公告)号:US20030200836A1
公开(公告)日:2003-10-30
申请号:US10407422
申请日:2003-04-07
Applicant: SHOWA DENKO K.K.
Inventor: Hitoshi Amita , Takashi Shoji , Shunsuke Nagasaki , Yoshinori Shibuya , Isamu Taguchi , Noriko Murase
IPC: C22C029/00
CPC classification number: H05K3/3484 , B23K35/0244 , B23K35/025 , B23K35/262 , B23K35/3613 , B23K35/3615 , B23K35/3616 , B23K35/3618 , H05K2201/0266
Abstract: A solder powder comprises solder particles having a distribution such that the number of particles having a particle diameter of 20 nullm or less is 30% or less, wherein the oxygen content is 500 ppm or less. A flux for solder paste comprises an organic acid component consisting of an organic acid ester and an ester decomposer catalyst, an organic halogen compound, a reducing agent and a resin component. A solder paste mainly comprises a flux and a solder powder, wherein the water content of the solder paste is 0.5% by weight or less.
Abstract translation: 焊料粉末包含具有使粒径为20μm以下的粒子的数量为30%以下的分布的焊料粒子,其中氧含量为500ppm以下。 用于焊膏的焊剂包括由有机酸酯和酯分解催化剂,有机卤素化合物,还原剂和树脂组分组成的有机酸组分。 焊膏主要包含焊剂和焊料粉末,其中焊膏的含水量为0.5重量%以下。