one Classification of solder balls According to the number and size of tin beads, it can be divided into 4 situations. In the case of a single solder powder, the diameter is 10-40 m. If the size is 50 m or more, it is considered that multip

At present, electronic equipment is still used in various electronic equipment and systems with printed circuit boards as the main assembly method. Practice has proved that even if the circuit schematic design is correct and the printed cir

1. Frontier The development trend of electronic products is more and more functions, lighter weight, lower prices, and higher density. The requirements for components are more and more miniaturized, which is not only manifested in such as B

PCB (printed circuit board) is a printed circuit board, abbreviated as printed circuit board, which is one of the important parts of the electronics industry. As the substrates and key interconnects for electronic parts, the manufacturing q

There are four main methods of welding: Surface mount reflow soldering (SMT) Full board wave soldering Selective soldering manual welding Each method leaves a different degree of risk, resulting in the presence of flux residues, which may l

1 Introduction In the circuit board assembly, solder paste is printed on the pads of the circuit board first, then various electronic components are mounted, and finally passed through a reflow furnace. After the solder balls in the solder

The development of modern science and technology has led to the miniaturization of electronic components and the large-scale application of SMT technology and equipment in electronic products. SMT manufacturing equipment has the characteris

The appearance and trend of electronic products, the volume of products is becoming smaller and smaller, the function is becoming more and more diversified, the components are becoming more and more sophisticated, the stability of the produ

Basic requirements for anti-static in PCBA electronics factories: 1. The basic principles of electrostatic protection a. Inhibit the accumulation of static charge; b. Eliminate the static charge that has been generated quickly, safely and e