Failure Caused by the PCB Printing Material

The quality of the PCB screen printing image and the film-forming state of the screen printing material are affected by the performance of the printing material. During the PCB screen printing process, the faults caused by the printing material include (1) plugging holes, (2) the reverse side of the printed board being contaminated by printing material, (3) […]

Wet Process and PCB Surface Treatment_Part 3

27. Sand Blast It uses strong air pressure to carry various small particles ejected at high speed and spray them on the surface of the object as a surface cleaning method. This method can be used for rust removal of metal, or to remove difficult-to-tangle dirt, etc., which is very convenient. The types of sand […]

Wet Process and PCB Surface Treatment_Part 2

14. Etching Resist Refers to the part of the copper conductor that is to be protected from corrosion, and the anti-corrosion film layer made on the copper surface, such as image transfer photoresist, dry film, ink pattern, or tin-lead coating, etc. are all anti-corrosion resists agent. 15. Hard Anodizing Also known as “hard anodic treatment”, […]

Wet Process and PCB Surface Treatment Part 1

Wet Process and PCB Surface Treatment. 1. Abrasives Brushes Various materials used for pre-cleaning the board surface and brushing the copper surface, such as polymer non-woven fabrics, or non-woven fabrics mixed with emery or various types of sand-free materials, and pumice powder (Pumice Slurry) are all called abrasives. However, the powder of this kind of […]

Printed Circuit Board Shape Processing Technology

1. The processing method of the printed board shape: (1) Milling the shape. To use the CNC milling machine to process the shape, it is necessary to provide the milling shape data and the corresponding pipe hole files. These data are all provided by the programmer. Since the spacing between the printed boards cannot be very […]

Requirements for PCBA Transportation and Storage Conditions

In order to ensure the quality of PCBA, the transportation and storage of PCBA should also strictly abide by various operating specifications. So, what are the requirements for PCBA transportation and storage conditions? 1. Anti-static Do a good job of anti-static measures for PCBA, use suitable containers, tools, etc. 2. Use suitable means of transport […]

How to Control the PCBA Manufacturing Process

The process of PCBA contract labor and material processing involves a series of processes such as PCB circuit board manufacturing, component procurement and inspection, patch processing, plug-in processing, program firing, testing, aging, etc. The supply and manufacturing chain is relatively long. Defects will cause a large number of bad PCBA boards, with serious consequences. Therefore, […]

PCB Horizontal Electroplating Process for High-Precision Circuit Boards (3)

According to the characteristics of horizontal electroplating, it is an electroplating method in which the way of placing the printed circuit board is changed from vertical to parallel plating liquid level. At this time, the printed circuit board is the cathode, and some horizontal electroplating systems use conductive clips and conductive rollers for the supply of […]

PCB Horizontal Electroplating Process for High-Precision Circuit Boards (1)

With the rapid development of microelectronics technology, the manufacturing of printed circuit boards is developing in the direction of multi-layer, lamination, functionalization, and integration, which makes the manufacturing technology of printed circuit boards more difficult, and the conventional vertical electroplating process cannot meet the requirements of high technical requirements for high-quality, high-reliability interconnect holes that resulted […]