What is a half-well plate? What is the production process of half-hole PCB board? -
What is a half-well plate? What is the production process of half-hole PCB board? Release time: 2018-03-01 0 Definition of metal half-holes (grooves), one drill is drilled and then drilled again, the shape process, and finally half of the metalized hole (groove) is retained, which is simply a metalized hole on the edge of the board Cut in half. In the PCB industry, it is also called a stamp hole. It is possible to directly weld the edge of the hole with the main edge, which can save connectors and space. Generally, it often appears in signal circuits. The production process of a half-hole board includes the following steps: (1) Outer layer circuit design; (2) Copper electroplating on the substrate pattern; (3) Tin electroplating on the substrate pattern; (4) Half-hole treatment; (5) Film removal; (6) Etching. How to control the quality of the product after forming the semi-metallized hole on the edge of the board. If the copper thorns on the hole wall are raised and left, it has always been a problem in the processing process. This type of PCB with a whole row of semi-metallized holes on the side of the board is characterized by relatively small apertures. Most of them are used on the carrier board as a daughter board of a mother board. These semi-metallized holes are connected to the mother board and components. The feet are soldered together. Therefore, if there are copper thorns remaining in these semi-metallized holes, when the plug-in manufacturer performs soldering, it will cause weak solder feet and false soldering, which will seriously cause a short circuit between the two pins.