What if the electronic components get damp? IC chip moisture-proof solution.
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如果进行回流焊接和加热,当元件受潮时,芯片内部会像烤箱中的面包一样慢慢膨胀。扩容过程会挤压和损坏电路,元件也可能产生无形的外部效应。内部裂纹,最严重的是元件鼓胀爆裂,又称“爆米花”。



潮湿的空气


 据统计,每年全球工业制造的不良产品中有四分之一以上与潮湿危害有关。湿气的危害已成为电子产品质量控制的主要因素之一。1726286167409554.png




除了水分渗透到元件内部造成的热损伤外,水分还会氧化元件的引脚。虽然引脚的氧化实际上不会损坏元件的内部电路并使其无法使用,但它会导致氧化。假焊引起的问题,如编程受阻、设备短路、无法作等,也相当麻烦。




对抗潮流的小贴士


我们可以采取这些措施来保护我们的芯片。未封装的 IC、管装的 IC 等必须存放在干燥柜中。干燥箱中的湿度为 < 20% RH。


湿度卡检查:显示值应小于 20%(蓝色);如果 >30%(红色),则表示 IC 已吸收水分。



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SMT车间环境温湿度控制在22°C(±4°C)的温度和60%RH(±20%)的湿度下工作。


烘烤后立即用于SMT生产,或加入适量的干燥剂后密封包装,存放在干燥柜中。



1726286323207757.png



  After unpacking, the IC must complete the SMT soldering process within 48 hours.The number of ICs collected per shift cannot exceed the production usage of that shift.


  Unused IC components must be re-baked or dehumidified at room temperature in a drying cabinet to eliminate moisture absorption problems in IC components.




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