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    • 2. 发明授权
    • Process for the application of solder composition on the pins of
electronic components
    • 焊料成分应用于电子元器件引脚的工艺
    • US5433372A
    • 1995-07-18
    • US995537
    • 1992-12-22
    • Sylvie MellulPierre Claverie
    • Sylvie MellulPierre Claverie
    • H05K3/34B23K1/08B23K35/38B23K31/02
    • B23K35/383B23K1/085
    • A solder composition is applied to the pins of an electronic component. The pins of the component are brought into contact with solder at a soldering station having a bath exposed to a controlled atmosphere of low oxygen content maintained in a hood enclosing at least the surface of the bath. The controlled atmosphere is comprised of at least one neutral gas and a gaseous silicon hydride whose content is between 50.times.10.sup.-6 and 2.times.10.sup.-3 of the volume of the controlled atmosphere. The controlled atmosphere is produced:a) by introducing into the hood the neutral gas to bring the residual oxygen content to less than 200 ppm, thenb) by introducing into the hood the neutral gas and the silicon hydride with a content greater than four times the residual oxygen content in the controlled atmosphere, at the end of step a).
    • 将焊料组合物施加到电子部件的销上。 在具有暴露于至少包围浴表面的罩中的低氧含量的受控气氛的焊接站的焊接站处,使部件的销与焊料接触。 受控气氛由至少一种中性气体和含量在受控气氛体积的50×10 -6和2×10 -3之间的气态氢化硅组成。 产生受控气氛:a)通过将中性气体引入发动机罩中以使残余氧含量低于200ppm,然后b)通过将中性气体和含量大于四倍的氢化硅引入罩中 在步骤a)结束时,受控气氛中的残余氧含量。