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Published by：
KEYOU PCB
July 18,2019
The rigid-flex pcb is combined with the hard board substrate in different areas of the soft board substrate (the conductive patterns need to be connected to each other in the soft and hard joint area)...
Published by：
KEYOU PCB
July 18,2019
1. The concept
Cover a photosensitive solder ink on the PCB surface of the completed circuit.The ink can protect PCB circuit from oxidation and insulate the solder pad from welding unwanted circuit...
Published by：
KEYOU PCB
July 18,2019
First, the open circuit caused by the exposed substrate
1. The PCB CCL has scratches before entering the warehouse;
2. The PCB CCL is scratched during the opening process;
Published by：
KEYOU PCB
July 15,2019
1. The solderability of the board hole affects the quality of the soldering
The solderability of the circuit board hole is not good, and the solder joint defect will be generated, which will affect...
Published by：
KEYOU PCB
July 13,2019
Coating three anti-paint is generally the last process in PCB assembly. However, in the final inspection, electronic components may have defects, and the three anti-paint coatings are required to be r...
Published by：
KEYOU PCB
July 13,2019
There are many PCB surface treatment processes, and the common ones are hot air leveling, organic coating, electroless nickel/immersion gold, immersion silver and immersion tin, which will be introduc...
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