> For the complete documentation index, see [llms.txt](https://book.ferro.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://book.ferro.pro/elec/pcb.md).

# PCB

* [Capacitor](#capacitor)

## Capacitor

TH Through-Hole vs SMD BD: Body Diameter Pitch 两个引脚之间的 间距 Drill hole / Pin Diameter 钻孔的直径或引脚本身的粗细