The cause of PCB board burst and its solution
Board explosion caused by water absorption accounted for 70% of the defects, other reasons such as PCB structure uneven growth and contraction, cold and heat imbalance, process injury and bad blackening.
Контрактное производство электроники под ключ в Китае
Шэньчжэнь, район Баоань, улица Фуюн, улица Фуцяо, район 3, промышленный парк Лонгхуй 6
PCB DIP plug-in processing notes
In PCB proofing, the copper foil part is pre-coated with a layer of lead tin anticorrosive layer, which remains in the outer layer of the board, that is, the graphic part of the circuit, and then the rest of the copper foil is chemically etched, known as
Will incorrect design of silk screen position number affect PCBA patch processing?
The silk screen position number does not determine whether the final patch is correct. Many experienced engineers found that deleting the bit number silk screen printing, PCBA product patch back and no problem. Generally, the machine patch locates the dev
The role of automatic Optical inspection (AOI) technology in PCBA processing
In PCBA manufacturing, automatic optical detection is set at the last step of the SMT production line. After the SMT patch processing is completed, product defect detection is required. Through timely detection and reduction of defects, improve assembly e
What should PCBA do when it encounters bad welding parts?
The welding methods of PCBA: (1) split welding method: (2) centralized welding method: (3) residual welding method: (4) shear welding method
Detailed understanding of SMT patch processing and production process
SMT patch processing refers to the process of pasting electronic components and other materials on PCB bare board. It is a popular processing technology in electronic assembly industry.
Why PCBA small batch proofing will charge additional engineering fees?
Small batch PCB proofing charge is high, mainly in SMT SMT processing, whether large batch SMT processing, small batch SMT processing, need to do the preliminary work is the same
What is the function of AOI and SPI in SMT processing?
PCBA proofing processing common production procedures :1. Repair: 2. Mounting: 3. Testing: 4. Curing: 5. Cleaning: 6. Solder paste printing: 7. Reflow welding: 8. dispensing
SMT patch incoming material processing process
Why should we do electrostatic protection in PCBA processing? PCBA board has precision electronic components, many components are more sensitive to voltage. A shock above the rated voltage will damage these components
SMT proofing small batch processing cost is high where?
SMT proofing small batch processing said of high charges mainly refers to the loss of time, rather than start-up loss. That is to say, before SMT processing, whether it is large area SMT processing or small scale SMT processing, the preliminary work needs
What is the meaning of through hole plug oil in PCB process?
Through the hole plug oil is to guide through the hole with ink inside the plug hole production, the emphasis is on the quality and tightness of the plug hole. Through the hole plug oil treatment inspection standard is or light, above must have ink cover,
SMT patch processing common detection method
SMT patch processing common detection methods: 1, optical detection method, 2, artificial visual detection method, 3, AOI detection method
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