搜索 - 科创

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手里的设备有，半自动贴片机、回流焊、钢网、锡膏，请问各位怎样才能焊接并测试一块有BGA芯片的板子(BGA是176引脚的)

我厂是生产高氯酸钾的，氯酸钠盐水阶段要求铬酸钠的含量是小于0.0006g/L，但是太低了，要加好多氯化钡了，感觉不对劲。是否小于0.006g/L呢？谢谢高手哈！

找了好久找到的资料。翻译的有些不好。。。。鼎鼎有名的FD64（最早证明业余工具和业余材料可以做涡喷的实例）的制作资料，以各位的条件。。。。我很想在几个月后的某天看到产品啊。虽然工具业余，但是知识一点也...

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