1) Storage of solder paste Solder paste is a relatively sensitive soldering material. Pollution, oxidation, and moisture absorption will cause different degrees of deterioration. Therefore, solder paste is generally required to be sealed and stored at low temperature and low humidity. In the sealed state, the bottle mouth is still required to be placed upright […]
Category Archives: Uncategorized
There are many types and specifications of solder paste. Even if it is the same manufacturer, there are differences in alloy composition, particle size, viscosity, cleaning methods, etc., and the price difference is also very large. How to choose the right solder paste has a great impact on product quality and cost. Generally, the selection […]
17
May
May
In the different processes or procedures of surface assembly, solder paste is required to have corresponding properties. The specific requirements of SMT process for solder paste characteristics and related factors are as follows: (1) The solder paste should have good storage stability. After the solder paste is prepared, it should be stored at room temperature […]
17
Apr
Apr
1. What is a wave soldering machine: Welding technology is the core of PCBA production and the key to determining the quality of PCBA products. Currently, there are two main types that are widely used and continuously improved: wave soldering and reflow soldering. One of the devices that first appeared on the market to provide […]
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Wave Soldering Defects & Tips for PCB .Through Hole Soldering Defects .Wave Solder Finger
17
Apr
Apr
1. Oxidation or contamination of the soldering terminals, pins, and pads of the printed circuit board substrate, or the PCB pads are damp. 2. The adhesion of the metal electrode of the inductor terminal is poor or the single-layer electrode is used, which will cause the capping phenomenon at the welding temperature. 3. In the […]
17
Apr
Apr
1. Earnestly accept the operation training of the equipment manufacturer, and be able to operate wave soldering independently and skillfully according to the chapter. 2. Maintenance of the spray system: During wave soldering, the nozzle should be cleaned with alcohol every 8 hours, and the nozzle should be cleaned when it is out of service. […]
16
Apr
Apr
With the rapid development of SMT processing technology, SMT chip processing has gradually replaced DIP insert processing. However, due to the large size of some electronic components in PCBA production and other reasons, the plug-in processing has not been replaced, and it still plays an important role in the electronic assembly processing. DIP plug-in processing […]
16
Apr
Apr
The tombstone is also known as the suspension bridge and the Manhattan phenomenon. It refers to the two Korean-end surface-mounted components. After reflow soldering, one of the ends leaves the surface of the pad. The entire component is inclined or upright, like a stone monument, as shown in the figure. As shown, one end of […]
16
Apr
Apr
The SMT production line consists of a lot of production equipment, each of which has a different job, but the ultimate goal of each equipment is a printed circuit board. SMT’s production equipment is fully automatic, high-precision, high-speed, and high-efficiency. What equipment does a complete and efficient SMT production line mainly include? Usually the main […]
16
Apr
Apr
What are the characteristics of AOI: (1) The high-speed inspection system has nothing to do with PCB mounting density. (2) Fast and convenient programming system. (3) Use a wealth of dedicated multi-function detection algorithms and binary or gray level optical imaging processing technology for detection. (4) The detection window is automatically corrected according to the […]