PCBA is to process an empty PCB board through strict processes one after another, and finally produce a PCB circuit board with all the functions required by customers, which becomes the core part of electronic products. Today, we will briefly understand the simple processing flow of PCBA from the following steps.
1. PCBA processing single-sided surface assembly process: solder paste printing - patch - reflow soldering;
2. PCBA processing double-sided surface assembly process: A side printing solder paste - patch - reflow soldering - flip - B side printing solder paste - patch - reflow soldering;
3. PCBA processing single-sided mixing (SMD and THC are on the same side): solder paste printing - patch - reflow soldering - manual plug-in (THC) - wave soldering;
4. Single-sided mixing (SMD and THC are respectively on both sides of the PCB): B-side printing red glue - patch - red glue curing - flip plate - A side plug-in - B side wave soldering;
5. Double-sided mixing device (THC is on side A, and SMD is on both sides of A and B): printing solder paste on side A - patch - reflow soldering - flip board - printing red glue on side B - patch - red glue curing - flip Board—A side plug-in—B side wave soldering;
6. Double-sided mixing (SMD and THC on both sides of A and B): printing solder paste on side A - patch - reflow soldering - flip board - printing red glue on side B - patch - red glue curing - flip board - A Surface insert - B-side wave soldering - B-side insert attached. In the soldering process, the smallest variable should belong to the machinery and equipment, so check them first. In order to achieve the correctness of the inspection, an independent electronic controller can be used to assist, such as using a thermometer to detect various temperatures, and using an electric meter to accurately correct the machine parameters. . In the production process of PCB processing technology, every step is indispensable and cannot be ignored. One step is followed by another step. No quality problem is allowed in any link or step. Once a quality problem occurs, it will affect the product quality. Quality has a very big impact
