The basic process of PCBA processing is to carry out SMT patch of components on the PCB board, DIP plug-in and realize welding. Here Hitech will briefly describe the basic process of PCBA processing for you.
The PCBA processing process can be roughly divided into the following processes: SMT patch processing → DIP plug-in processing → PCBA testing → finished product assembly.
- SMT patch processing
1). Solder paste stirring
The solder paste needs to be stirred before it can be used after it is taken out and thawed.
2). Solder paste printing
The solder paste on the steel mesh is printed on the PCB pad by a scraper.
3). SPI
SPI is the solder paste thickness detector.
4). Mounting
The chip components are placed on the feeder, and the chip mounter head accurately mounts the components on the feeder on the PCB pad by identification.
5). Reflow soldering
The mounted PCB board is reflowed to heat the solder paste into liquid and then cool and solidify to complete the welding process.
6). AOI
AOI is automatic optical inspection, which detects the welding effect of PCB boards to eliminate bad PCB boards.
7). Rework
Rework bad boards detected by AOI and manual inspection.
- DIP plug-in processing
1). Plug-in
Insert the plug-in material on the PCB board.
2). Wave soldering
The inserted board is soldered by wave soldering.
3). Cutting the pins
The pins of the soldered board are generally too long and need to be cut.
4). Post-welding processing
Use a soldering iron to manually solder the components.
5). Washing the board
After wave soldering, the board will be dirty and needs to be cleaned with washing water and washing tank, or by machine.
6). Quality inspection
Inspect the PCB board, unqualified products need to be repaired, and qualified products can enter the next process.
- PCBA testing
According to different products and different customer requirements, different test methods are used to detect whether the PCBA products meet the PCBA processing requirements.
- Finished product assembly
The PCBA products that have passed the test will be assembled into shells, and then tested. If the test is passed, it can be arranged for shipment.
Hitech PCBA can provide you with high-quality SMT patch processing services, and also has rich PCBA processing experience. Hitech provide one-stop PCBA service for you. Hitech can also undertake DIP plug-in processing and PCB production, electronic circuit board manufacturing.
If you have interest in our service, please feel freely contact Cynthia at sales11@hitechpcb.