PCB design file--What is the difference between Via and Pad?

szjlczhang

PCB design file--What is the difference between Via and Pad? [Copy link]

Via is called through hole, which is divided into through hole, blind hole and buried hole. It is mainly used to connect wires in different layers of the network and cannot be used as plug-in hole to weld components.

The via hole does not have aperture control during the production process. (JLC currently does not process blind holes and buried holes, only through holes)

Pad is called pad, which is divided into pin pad and surface mount pad; pin pad has welding hole, which is mainly used to weld pin components; surface mount pad has no welding hole, which is mainly used to weld surface mount components.

Pad hole is controlled in aperture during production, with a tolerance of plus or minus 0.08mm.

Via mainly plays the role of electrical connection. In actual production, it may compensate for the increase of holes and the production of close holes, reduce the number of knives and improve work efficiency, or it may reduce the aperture due to limited line spacing and line width

space to meet production needs. The aperture of via is generally small, and it is usually sufficient as long as the board manufacturing process can do it. The surface of via can be coated with solder mask ink or not; while the pad not only serves as an electrical connection, but also serves as a mechanical fixation. The aperture of the pad must be large enough to pass through the pins of the component, otherwise it will cause production problems; in addition, there must be no solder mask ink on the surface of the pad, because this will affect welding, and the hole tolerance control of plus or minus 0.08mm, which is larger or smaller, will result in an unstable installation.

Jialichuang｜pcb proofing｜Jialichuang pcb｜circuit board proofing｜laser steel mesh｜Jialichuang mall｜Jialichuang pcb|Shenzhen Jialichuang｜Shenzhen circuit board

qwqwqw2088

This has no layout.

szjlczhang

Via is called through hole, which is divided into through hole, blind hole and buried hole. It is mainly used to connect wires in different layers of the network and cannot be used as plug-in hole to weld components. The via hole does not have aperture control during the production process (JLC currently does not process blind holes and buried holes, only through holes). Pad is called soldering pad, which is divided into pin pad and surface mount pad; pin pad has solder hole, which is mainly used for soldering pin components; surface mount pad has no solder hole, which is mainly used for soldering surface mount components. Pad hole is controlled in aperture during the production process, with a tolerance of plus or minus 0.08mm. Via mainly plays the role of electrical connection. In actual production, it may compensate for the increase in hole and close hole production, reduce the number of knives and improve work efficiency, or it may reduce the aperture due to limited line spacing and line width space to meet production needs. The aperture of via is generally small, and usually it is sufficient as long as the board manufacturing process can achieve it. The surface of via can be coated with solder mask ink or not; while the pad not only serves as an electrical connection, but also serves as a mechanical fixation. The aperture of the pad must be large enough to pass through the pins of the component, otherwise it will cause production problems; in addition, there must be no solder mask ink on the surface of the pad, because this will affect welding, and the hole tolerance control is plus or minus 0.08mm, which may be larger or smaller, resulting in unstable installation. Jialichuang | pcb proofing | Jialichuang pcb | circuit board proofing | laser steel mesh | Jialichuang mall | Jialichuang pcb | Shenzhen Jialichuang | Shenzhen circuit board

捷多邦PCB技术

Small and medium batch PCB circuit board rapid proofing, aluminum substrate, steel mesh production, SMT patch welding, can be expedited delivery within 12 hours, 24 hours