First, clean the cured photosensitive film on the PCB. It is then cleaned of excess copper foil covered with a strong alkali. The tin coating on PCB layout copper foil is then removed with destin solution. After cleaning, complete the 4-layer PCB layout.
The key points to understand the patch factory: 1. Professional cooperation, 2. Quality management process, 3. The mental outlook of management and staff
PCBA proofing operation process :1. Customers place orders; 2. Customers provide production materials; 3. Purchased raw materials, 4. Incoming material inspection, 5. PCBA production, 6. PCBA testing, 7. After packaging
What do PCB copying boards need to provide: Usually, simple single and double panel copying boards only need to provide one set of samples. If it is multi-layer board, it is better to provide two sets of exactly the same samples, which is convenient for l
The PCB board where the component is placed is placed into the machine from one end. On a double-track conveyor belt, the circuit board of the newly placed component passes through the hot and cold zones of the reflow furnace, precisely controlling the me
The snake line on PCI board is to adapt to the line length requirements of PCI 33MHzClock. If in the general ordinary PCB board, is a distributed parameter LC filter, can also be used as a radio antenna inductor coil, short and narrow snake wire can do fu
Since there are many logic components, it is easy to cause confusion and difficult to manage when they are built under one library.
PCB board making fee, material fee, SMT welding fee, steel mesh fee, PCBA fixture, PCBA test frame and packaging and transportation fee.
From this point of view, whether gold or silver, the purpose of the process itself is to prevent oxidation, protect the pad, so that it in the following welding process to ensure yield.
How should PCBA processing plant do a good job in component procurement: 1. PCBA component procurement channels; 2. PCBA component quality control; 3
During design, WPC can be designed according to product characteristics to reduce shadow areas and avoid collision parts.
Especially for automotive electronics, which require high stability of the product, heavy industry is not allowed, so the board after the dust removal process has become a very practical choice
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