35um Copper Thickness Bare PCB with Drilling Holes

 What is PCBA manufacturing?

Electronic products must be mixed assembly before Box Build Assembly, and PCBA is used at this time, so PCB assembly is PCBA. PCBA is the abbreviation of Printed Circuit Board + Assembly in English. Simply put, the empty PCB board is loaded by SMT. Then go through the entire process of DIP plug-in, referred to as PCBA. In layman's terms, PCB is a circuit board with no upper components, and PCBA is a circuit board with soldered electronic components.

PCBA Manufacturing process flow:
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 board-B side printing solder paste-patch-reflow soldering;
3. PCBA processing single-sided mixed assembly (SMD and THC are on the same side): solder paste printing-patch-reflow soldering-manual plug-in (THC)-wave soldering;
4. Single-sided mixed assembly (SMD and THC are respectively on both sides of the PCB): B side printing red glue-patch-red glue curing-flap-A side plug-in-B side wave soldering;
5. Double-sided mixing device (THC has SMD on side A, and SMD on both sides of A and B): Printed solder paste on side A-patch-reflow soldering-flipping board-printed red glue on side B-patch-red glue curing-flipping Board—A side plug-in—B side wave soldering;
6. Double-sided mixed packaging (SMD and THC on both sides of A and B): Printed solder paste on side A-patch-reflow soldering-flip board-printed red glue on side B-patch-red glue curing-flip board-A Surface plug-in—B-side wave soldering—B-side plug-in is attached.

In the soldering process, the smallest variables should belong to the machinery and equipment, so they are the first to be checked. In order to achieve the correctness of the inspection, an independent electronic device can be used to assist, such as using a thermometer to detect various temperatures and using an electric meter to accurately calibrate machine parameters. .
PCBA is to process an empty PCB board through a process, and finally process it into an electronic product that can be used by the user. In the production process, there are links to each link, and which link has quality problems will have a great impact on the quality of the product.