0.5mm间距的bga封装怎么处理呢?如果扇出的话要用4mil的过孔进行激光打孔,价格十分昂贵。而如果在焊盘上打孔,孔径和焊盘大小应该怎么设置呢,一般机械钻孔的话可能要大于8mil才行,否则还是需要激光打孔
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这个链接是超声波模拟前端的所有器件,可以参考一下;http://www.ti.com/lsds/ti/data-converters/ultrasound-products.page