SMT patch processing knowledge

SMT factories play an important role in the electronic processing industry and are indispensable for the precision and miniaturization of electronic products. Piece-processed electronic components also have many advantages over traditional plug-in components. Next, Shenzhen PCBA processing manufacturer kingford will introduce the SMT patch processing knowledge.

SMT patch processing knowledge

1. Commonly used Mark shapes are: square, circle, "ten" shape, swastika shape, diamond shape, triangle;

2. In the preheating area and cooling area of SMT processing, due to the incorrect setting of Reflow Profile, the parts will crack slightly;

3. When the patch is processed, uneven heating at both ends of the parts is easy to cause: deviation, air welding, stone tablet;

4. Tools for repairing patch components include: electric soldering iron, hot air table, tin gun, tweezers;

5. QC testing in PCBA processing plant is divided into: IQC, IPQC, FQC and OQC;

6. High speed SMT machine can mount resistance, capacitor, IC and transistor;

7. Characteristics of static electricity: all are small current and greatly affected by humidity;

8. The Cycle time of high-speed SMT machine and ordinary SMT machine should be balanced as far as possible;

9. Quality is defined by doing it right the first time;

10. The SMT machine should attach small components first, and then large components;

11. BIOS is a basic Input/Output System, which is called Base Input/Output System.

12. According to guide | foot patch components are divided into LEAD and LEADLESS two;

13. There are three basic types of common active placement machine: continuous placement type, continuous placement type and multi-transfer placement machine;

14. In SMT processing, production can be performed without LOADER;

15. The process of SMT processing is plate feeding machine - solder paste printer - high SMT machine - reflow welding - plate receiving machine;

16. When the humidity sensitive parts are opened, the color displayed in the humidity card circle is blue, and the parts can be used.

Shenzhen kingford specializes in providing integrated PCBA electronic manufacturing services, including upstream electronic component procurement to PCB production and processing, SMT patches, DIP plug-ins, PCBA testing, finished product assembly and other one-stop services.

Why choose Shenzhen kingford?

1. Strength assurance

▪ SMT workshop: We have imported SMT machines and a variety of optical testing equipment, capable of producing 4 million pieces per day. Every process is equipped with QC personnel who can keep a close eye on product quality.

▪ DIP production line: There are two wave welding machines. Among them, there are more than ten old employees who have worked for more than three years. Skilled workers can weld all kinds of insert materials.

2. Quality assurance, high cost-effective

▪ High-end equipment can mount precision heterosexual parts, BGA, QFN, 0201 materials. Proofing can be machine paste, also can be hand pendulum.

▪ Samples and large and small batches can be produced. Proofing starting price 800 yuan, batch starting price 0.008 yuan/point, no start-up fee.

3. Rich experience in SMT and welding of electronic products, stable delivery time

▪ Has served thousands of home appliance subsidiaries, involving various kinds of automotive equipment and industrial control motherboard SMT SMT processing services. Products are often exported to Europe and the United States, the quality of new and old customers affirmed.

▪ On time delivery, usually within 3-5 days after the board is assembled, small batch expedited can also be shipped on the same day.

4. Strong maintenance ability and perfect after-sales service

▪ Experienced maintenance engineers are able to repair defective products caused by various welding problems and ensure the connectivity rate of each circuit board.

▪ 24-hour customer service staff will be ready to respond and resolve your order as soon as possible.