命名举例:
QFN24-0R5-4X4EP2R5X2R5,QFN:封装型号,24:24脚,焊盘间距0R5 = 0.5mm,
器件实体大小为4X4 = 4X4mm,中间焊盘尺寸2R5X2R5=2.5X2.5mm。