This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

请问tps7a49的qfn封装下热过孔尺寸问题

1 请问datasheet上推荐的0.2mm孔径, 但是regular pad直径推荐多少呢,内层GND的flash焊盘的内径和外径是多少呢.  软件使用的allgero。附件是我做的焊盘,内层的flash 都重叠在一起了

2 我看了ti的qfn封装layout指导,里边说bottom层要开窗并用实型0.1mm pad。