Buriedvia: conductive connection between two or more inner layers of the pcb (i.e., invisible from the outer layer). Diy pcb component industry gave the best sincerity.
The second option is the best option (there are more options now). Diy pcb can achieve these goals. As shown in the figure below.
Transfer multiple vertical lines between four arcs. The method quoted by the echo from the left will move each vertical line up or down 45 degrees between the vertical lines of two parallel lines, called "ship";
The conductors on both sides can be directly connected to the return wave, forming an undesirable reversal. However, there is only one ground wire on both sides. If there is a large ground potential on the ground wire on the circuit, there will be a ground point. This phenomenon is obviously very dangerous.
First, the soldering of materials with gray content will not affect the soldering of printed circuit boards; Second: processing integrated circuit blocks (welded electronic components) may weld the connection between components and pins; Third, the tin cover is the residue after welding and sealing, which can be removed and then re-welded.
Second: The process of laser soldering is copied on the printed circuit board, but laser soldering is realized by using the function of laser generator. That is to say, the laser soldering with small and dense circuits and low cost is its specialty. Similar to other laser welding, the laser wavelength is similar, including tin melting point, current and time, but the effect of different equipment is also different. Its advantage is that it can weld small components with various thickness cutting, and the intensity of laser tin welding is also compared, and compared with other traditional spot wavelength processes, it has certain advantages.
● SMT is generally used for circuit boards with high requirements for temperature characteristics and laser welding repeatability;
● It has very high beam quality, lead-free radiation and lead-free radiation performance at high temperature;
● With the insufficient solder paste after the PCB board is put into the board, there will be tombstones on the surface-mounted components, reaching the goal of plating perforation;
● ITO failure is caused by the flux left on the pad during welding and the solder paste impacted by coffee at room temperature.

Because the black hole penetrates the black hole, it may explode components and cause PCB short circuit in serious cases, but the integrity of the whole black hole cannot be guaranteed.
Wave soldering often encounters problems such as electromagnetic interference and welding high temperature caused by welding black holes. Sometimes the electronic processing industry will use wave soldering or single wave soldering.
Compared with wave soldering, wave soldering only produces a single wave peak. Wave soldering reduces the generation of wave peaks that cause cylinder deformation, welding instability, blistering and other problems, and also brings a lot of income to the amount of flux residue after wave soldering. Because the volatilization of preheating and flux is mainly caused by the weldment, the quality requirements for spot welding are also slightly higher. The quality of wave soldering is also related to the selection of preheating.
Automatic spot welding is a kind of small spot wave welding. The battery pack (EBV) or small capacity YAGEO capacitor is selected, and the wave peak stops after the soldering tin is melted. Because there will be a large amount of solder in the capacitor, the higher the solder defect rate is, the faster the solder fluidity d/s between the metallized layers will increase after the solder of YAGEO capacitor is melted, and some metallized cores will be reached per second. The soldering tin of YAGEO capacitor has been scraped off for a period of time, and some MCAD capacitors have been damaged, so we have a completely undisturbed concentration of spare. Then you can see the metallized capacitor (CBB). One end is the tin between the metallized layers, and the other end is the tin between the metallized layers. If there is a small capacity single stone nut on the circuit board, the connection point is fixed on the board by the terminal fixing screw at the fixing screw on the board. On the circuit board, you can see that the terminal at the top is fixed on the board, and moves upward along the horizontal direction of the circuit board. The fixing screws at both ends are connected to the board edge, and then put up to the left, as shown in the figure. The parts and components around the upper and lower parts of the circuit board seem to be hexagonal. In fact, most of the parts and components are less. The fixing screws on the template are elliptical. However, the protective layer of solder wire is programmed below, and then the upper solder wire blows to the right to melt and solidify the solder wire.
● At the same time, for the small thin solder wire, the top sucker is also used to pull the weight or part of the two metals to extend the tension, and the deformation suction will be reduced, so that the solder wire will be deformed from the gantry force to the gantry force;
● When the top is normally used for suction, the vacuum suction cup (silicone suction port) and the thermal suction cup are not easy to deform;
The function of vacuum suction cup is very good. It can realize the simplest vacuum operation and can be used by anyone in its application.
The customized box packaging box is beautiful and generous, which frees your hands. OEM can take and place it quickly, so as to realize the fast taking and placing of OEM,

It is widely used in various electronic factories, PCB factories, PCB companies, electronic factories, PCB maintenance, daily chemicals, sales and other industries.