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Generally, the design current of PCB will not exceed 10A or even 5A. Especially in household and consumer electronics, the continuous working current on PCB usually does not exceed 2A. Recently, however, the company’s products should be designed with a power line, and the continuous current can reach about 80A. Considering the instantaneous current and […]

Etching process is one of the basic steps in PCB production. Simply speaking, it is the process that the base copper is covered by the resist layer, and the copper that is not protected by the resist layer reacts with the etchant, so that it is bitten off, and finally the design circuit pattern and […]

Matters needing attention in the design of the clock on the circuit board are mainly considered from three aspects. 1. PCB layout 1) the clock crystal and related circuits should be arranged in the center of the PCB with a good stratum, not near the I/O interface. The clock generation circuit can not be made […]

It is undoubtedly the goal of this product to have a PCB that can withstand any electrical, mechanical or structural adverse effects throughout its life expectancy. Circuit board construction process. These goals are equally divided between PCB manufacturing and PCB assembly. For manufacturing, the threat is cracking and breaking, while for assembly, the threat is […]

The analysis and design of power supply system (PDS) is becoming more and more important in the field of high-speed circuit design, especially in computer, semiconductor, communication, network and consumer electronics industries. With the inevitable further proportional reduction of VLSI technology, the supply voltage of integrated circuits will continue to decrease. As more and more […]

It is easy to form two basic parasitic elements that may cause problems in PCB design: parasitic capacitance and parasitic inductance. When designing a circuit board, placing two tracks close to each other will cause parasitic capacitance. You can do this: place one trace on top of another trace on two different floors; Or on […]

In electronic design, PCB is the physical carrier of our design content, and the final realization of all our design intentions is represented by PCB. Such PCB design is an indispensable link in any project. However, in the previous design, due to the low frequency, low density and large distance between devices, PCB design was […]

The key to realize high-precision deep milling of PCB is that the grating ruler on each axis can sense the board surface, so that the descending depth of each Z axis can be controlled separately, and the axes can work independently in coordination to realize mass production processing. Here, the main influencing factors are analyzed: […]

PCB process failure: debris appears on the hole wall. Reason: (1) the material of cover plate or base plate is inappropriate. (2) The cover plate causes the bit damage. (3) The vacuum pressure of the spring central head of the fixed drill bit is insufficient. (4) The pressure foot gas supply pipeline is blocked. (5) […]

What you must know about ESD as a PCB LAYOUT engineer. TVS tube is widely used in practical PCB design. Silicon transient voltage absorption diode has extremely fast response time (sub-nanosecond level), quite high surge absorption capacity, and many voltage grades. It can be used to protect equipment or circuits from static electricity, transient voltage […]