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What is solder mask window?
Before introducing the solder mask window, we must first know what the solder mask is. Solder mask refers to the part of the printed circuit board to be inked, which is used to cover the traces and copper to protect the metal elements on the PCB and prevent short circuits. Solder mask opening ref...Read more -
The PCB routing is very important!
When make the PCB routing , due to the preliminary analysis work is not done or not done, the post-processing is difficult. If the PCB board is compared to our city, the components are like row upon row of all kinds of buildings, signal lines are streets and alleys in the city, flyover roundabou...Read more -
PCB stamp hole
Graphitization by electroplating on holes or through holes on the edge of the PCB. Cut the edge of the board to form a series of half holes. These half holes are what we call stamp hole pads. 1. Disadvantages of stamp holes ①: After the board is separated, it has a saw-like shape. Some people cal...Read more -
What harm will holding the PCB board with one hand cause to the circuit board?
In the PCB assembly and soldering process, SMT chip processing manufacturers have many employees or customers involved in operations, such as plug-in insertion, ICT testing, PCB splitting, manual PCB soldering operations, screw mounting, rivet mounting, crimp connector manual pressing, PCB cyclin...Read more -
Why does PCB have holes in hole wall coating?
Treatment before immersion copper 1) . Burring The drilling process of the substrate before copper sinking is easy to produce burr, which is the most important hidden danger to the metallization of inferior holes. It must be solved by deburring technology. Usually by mechanical means, so that...Read more -
Chip decryption
Chip decryption is also known as single-chip decryption (IC decryption). Since the single-chip microcomputer chips in the official product are encrypted, the program cannot be read directly using the programmer. In order to prevent unauthorized access or copying of the on-chip programs of the mic...Read more -
What should we pay attention to in PCB laminated design?
When designing PCB, one of the most basic question to consider is to implement the requirements of the circuit functions need to how much a wiring layer, the ground plane and the power plane, and printed circuit board wiring layer, the ground plane and the power plane determination of the number ...Read more -
Advantages and disadvantages of ceramic substrate pcb
Advantages of ceramic substrate pcb: 1.The ceramic substrate pcb is made of ceramic material, which is an inorganic material and is environmentally friendly; 2.The ceramic substrate itself is insulated and has high insulation performance. The insulation volume value is 10 to 14 ohms, which can ca...Read more -
The following are several methods of PCBA board testing:
PCBA board testing is a key step to ensure that high-quality, high-stability, and high-reliability PCBA products are delivered to customers, reduce defects in the hands of customers, and avoid after-sales. The following are several methods of PCBA board testing: Visual inspection ，Visual inspe...Read more -
Process flow of Aluminum PCB
With the continuous development and progress of modern electronic product technology, electronic products are gradually developing towards the direction of light, thin, small, personalized, high reliability and multi-function. Aluminum PCB was born in accordance with this trend. Aluminum PCB has ...Read more -
it is broken and separated after welding, so it is called V-cut.
When the PCB is assembled, the V-shaped dividing line between the two veneers and between the veneer and the process edge forms a “V” shape; it is broken and separated after welding, so it is called V-cut. Purpose of V-cut： The main purpose of designing the V-cut is to facilitate th...Read more -
What are the common faults of PCB screen printing?
PCB screen printing is an important link in the PCB manufacturing process, then, what are the common faults of PCB board screen printing? 1, The screen level of the fault 1), plugging holes The reasons for this kind of situation are: printing material dry too fast, in the screen version dry...Read more