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Disadvantages of PCB traditional four-layer stacking
If the interlayer capacitance is not large enough, the electric field will be distributed over a relatively large area of the board, so that the interlayer impedance is reduced and the return current can flow back to the top layer. In this case, the field generated by this signal may interfere wi...Read more -
The conditions for PCB circuit board welding
1. The weldment has good weldability The so-called solderability refers to the performance of an alloy that can form a good combination of the metal material to be welded and the solder at an appropriate temperature. Not all metals have good weldability. In order to improve solderability, measur...Read more -
Welding of PCB board
The welding of PCB is a very important link in the production process of PCB, welding will not only affect the appearance of the circuit board but also affect the performance of the circuit board. The welding points of PCB circuit board are as follows: 1. When welding PCB board, first check the ...Read more -
How to manage high-density HDI holes
Just as hardware stores need to manage and display nails and screws of various types, metric, material, length, width and pitch, etc., PCB design also needs to manage design objects such as holes, especially in high-density design. Traditional PCB designs may only use a few different pass holes, ...Read more -
How to place capacitors in PCB design?
Capacitors play an important role in high-speed PCB design and are often the most used device on PCBS. In PCB, capacitors are usually divided into filter capacitors, decoupling capacitors, energy storage capacitors, etc. 1.Power output capacitor, filter capacitor We usually refer to the capacitor...Read more -
Advantages and disadvantages of pcb copper coating
Copper coating, that is, the idle space on the PCB is used as the base level, and then filled with solid copper, these copper areas are also called copper filling. The significance of copper coating is to reduce the ground impedance and improve the anti-interference ability. Reduce voltage drop, ...Read more -
Electroplated Hole Sealing/Filling On Ceramic PCB
Electroplated hole sealing is a common printed circuit board manufacturing process used to fill and seal through holes (through-holes) to enhance electrical conductivity and protection. In the printed circuit board manufacturing process, a pass-through hole is a channel used to connect different ...Read more -
Why should PCB boards do impedance?
PCB impedance refers to the parameters of resistance and reactance, which plays anobstruction role in alternating current. In pcb circuit board production, impedance treatment is essential. So do you know why PCB circuit boards need to do impedance? 1, PCB circuit board bottom to consider the ins...Read more -
poor tin
PCB design and production process has as many as 20 processes, poor tin on the circuit board may lead to such as line sandhole, wire collapse, line dog teeth, open circuit, line sand hole line; Pore copper thin serious hole without copper; If the hole copper thin is serious, the hole copper witho...Read more -
Key points for grounding booster DC/DC PCB
Often hear “grounding is very important”, “need to strengthen the grounding design” and so on. In fact, in the PCB layout of booster DC/DC converters, grounding design without sufficient consideration and deviation from the basic rules is the root cause of the problem. Be ...Read more -
Causes of poor plating on circuit boards
1. Pinhole The pinhole is due to the adsorption of hydrogen gas on the surface of the plated parts, which will not be released for a long time. The plating solution cannot wet the surface of the plated parts, so that the electrolytic plating layer cannot be electrolytically analyzed. As the thick...Read more -
How to select suitable PCB surface to get longer service life?
Circuit materials rely on high-quality conductors and dielectric materials to connect modern complex components to each other for optimal performance. However, as conductors, these PCB copper conductors, whether DC or mm Wave PCB boards, need anti-aging and oxidation protection. This protection c...Read more
