日本田中贵金属集团所属田中电子工业开发成功导电性能比原来银焊丝高出30%的银合金焊丝,牌号定为SEC。目前银焊丝市场销售量为每年6千万m,3年后将增加3倍,达到2亿m。据日本半导体集团和LED集团的规划,3年后SEC焊丝月销售额将达5亿日元。原来的银焊丝的电阻率为3.3μΩ·cm,而SEC Japan Tanaka precious metals group belongs Tanaka electronics industry developed conductive properties than the original silver wire 30% higher silver alloy wire, grade as SEC. At present, silver wire market sales volume of 60 million m per year, 3 years will increase 3 times to 200 million m. According to Japan’s semiconductor group and LED Group’s plan, 3-year SEC wire monthly sales will reach 500 million yen. The original silver wire resistivity of 3.3μΩ · cm, while the SEC