Square pads – large and small components on printed circuit boards, and used when printed conductors are simple. This type of pad is easy to implement when manufacturing a PCB by hand.
Round pads – widely used in single and double-sided printed circuit boards with regularly arranged components. If the density of the board allows, the pad can be larger and will not fall off during soldering.
Island-shaped pad – the connection between the pad and the pad is integrated. Often used in vertical irregular arrangement installation. Such pads are often used in tape recorders.
Teardrop Pads – Used when the traces on the pad are thinner to prevent pad blister, peeling, and pad disconnection. Such pads are commonly used in high frequency circuits.
Polygon Pads – Used to distinguish between pads with different outer diameters and different apertures for easy processing and assembly.
Elliptical Pads – These pads have sufficient area to enhance stripping resistance and are commonly used in dual in-line devices.
Open-type pad – In order to ensure that the pad holes for manual repair welding are not sealed by solder after wave soldering.
