In PCBA processing, automatic optical inspection is usually set at the last step of the SMT production line, and it is necessary to detect the defects of the product after the completion of the SMT processing process.
R107, C118, Q102, D202 and other numbers are often seen on the PCB board. In general, the first letter identifies the device category, such as R for resistor, C for capacitor, D for diode, Q for transistor, etc.
Poorly welded electronic components. In the face of this situation, we generally remove poorly welded electronic components without damaging the PCB board.
Pcb circuit board proofing: pcb circuit board proofing refers to the production of a small part of the product as a sample before the start of mass production, so that it can be better completed, and the perfect combination of mass production circuit boar
Designers using this approach can focus on masking the microstrip length of the copper foil in order to obtain good performance for signal integrity. For systems that use dense connectors in the communication structure, the designer can use a PCB as the t
Copper foil for electrodeposited copperfoil in English, is copper clad (CCL) and printed circuit board (PCB) manufacturing of important material. In the rapid development of today's electronic information industry, electrolytic copper foil is known as the
The OC48 interface card contains several typical mixed-signal PCB layout and routing problems, the layout and routing process will indicate the sequence and steps to solve the mixed-signal PCB layout solution.
The circuit board is mainly composed of welding pad, through hole, mounting hole, wire, component, connector, filling, electrical boundary and so on.
Special substrate printed circuit board Metal substrate (aluminum base, copper base, iron base or invar steel), ceramic substrate, according to its characteristics, use can be made of metal (ceramic) based single, double, multi-layer printed circuit board
As a power supply product, PCB circuit boards can be seen everywhere in life. This requires manufacturers to strictly put the quality in production, understand all the failure of the product, deal with it early, and reduce economic losses.
Do you know PCB cleaning technology? Here are some tips to share.
Further said, sulfuric acid-hydrogen peroxide, can not be used for lead tin corrosion resistance layer etching, and this process is not the main method in the production of PCB outer layer, so most people rarely ask.
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