Ipc-7093a Pdf !link! -

The standard is widely used by PCB designers, process engineers, and quality managers. You can obtain the official document in several formats:

As electronic devices shrink, Bottom Termination Components (BTCs) have become indispensable due to their small footprint, low cost, and excellent thermal performance. However, because their connections are hidden underneath the component body, they present unique manufacturing challenges that IPC-7093A directly addresses: ipc-7093a pdf

BTCs often feature a large central thermal pad to dissipate heat. The standard is widely used by PCB designers,