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Product Detail

SMT Process

The basic process components of SMT include: silkscreen (or dispensing), assembly (curing), reflow soldering, cleaning, testing, rework

1. Silkscreen: Its function is to leak solder paste or patch glue to the pads of the PCB to prepare for the welding of components. The equipment used is a screen printing machine (screen printing machine), which is located at the forefront of the SMT production line.

2. Dispensing: It drips glue onto the fixed position of the PCB board, and its main function is to fix the components to the PCB board. The equipment used is a glue dispenser, which is located at the front end of the SMT production line or behind the inspection equipment.

3. Mounting: Its function is to accurately install the surface-mounted components on the fixed position of the PCB. The equipment used is a placement machine, which is located behind the screen printing machine in the SMT production line.

4. Curing: Its function is to melt the patch glue, so that the surface-mounted components and the PCB board are firmly bonded together. The equipment used is a curing oven, which is located behind the placement machine in the SMT production line.

5. Reflow soldering: its function is to melt the solder paste, so that the surface mount components and the PCB board are firmly bonded together. The equipment used is a reflow oven, located behind the placement machine in the SMT production line.

6. Cleaning: Its function is to remove the welding residues such as flux that are harmful to the human body on the assembled PCB board. The equipment used is a washing machine, the location may not be fixed, it may be online or not.

7. Inspection: Its function is to inspect the welding quality and assembly quality of the assembled PCB board. The equipment used includes magnifying glass, microscope, in-circuit tester (ICT), flying probe tester, automatic optical inspection (AOI), X-RAY inspection system, functional tester, etc. The location can be configured in a suitable place on the production line according to the needs of the inspection.

8. Rework: Its function is to rework the PCB board that has detected the failure. The tools used are soldering iron, rework station, etc. Configured anywhere in the production line.

To get a full quotation of the PCB/PCBA, please provide the information as below:

● Gerber File, with detail specification of the PCB

● BOM List

Special requirements for product technology:

1. DIP pads are round or oval pads, and no other shaped pads are allowed.

2. When the gap between the SMT component and the plug-in component cannot reach more than 5mm and the oven rack cannot be made, the plug-in component and the SMT component are designed on the same side of the PCB board.

3. If there is a filter capacitor on the PCB, it is necessary to evaluate whether the output voltage of the transformer and the withstand voltage of the filter capacitor are reasonable.

4. It is not allowed to have missing parts, multiple parts, wrong parts, reverse stickers, tombstones, virtual welding, empty welding, continuous welding, cold welding and other phenomena that seriously affect product performance.

5. Other defects that affect the appearance and function of the product.

FAQs

Q1: What service do

Q1: What service do we provide?

A:  We provide turnkey solution including PCB fabrication, SMT, plastic injection   metal,final assembly, testing  and other value- added service.

Q2: What are the main products of Beton PCB/PCBA services?

A: PCB/PCBA services are mainly for the industries  including Medical, Automation.

Q3: Can we inspect quality during production?

A: We are welcome and transparent on each production process, inspect our production process and check in house.

Q4:How about the products package?
A: Flexible package according to the specific requirements of the clients.
Welcome to visit CKS . Please feel free to contact us .

Q5: Do you have any minimum order quantity (MOQ) requirement?

AWe do not have MOQ requirement, we can support your projects starting from prototype to mass production.

We take virtue as the first priority in employing people, and know how to cooperate and share in the Shenzhen Professional Manufacturer with ODM/OEM Service SMT/DIP PCB Assembly industry. We pay attention to the needs of users, provide advice and solutions for users, and help them grow from a practical point of view. Creating benefits for shareholders and investors is the basic requirement of our company's operation.