To introduce the troubleshooting method of short circuit in PCBA processing: Open the PCB design drawing on the computer, pay attention to the IC internal short circuit, three, if found short circuit, it is recommended to take a board secant line, step by
Not paying attention to the packaging of products can bring immeasurable benefits.
Exposed to heat, humidity and pollution, it can still provide excellent electrical properties and maintain satisfactory weldability, but it will miss shine.
The first step to enter the PCB circuit board system is to set the PCB preset background, including setting the grid volume and type, cursor type, version layer reference, wiring reference, etc.
The most fundamental difference between gold plate and gold plate is that gold is hard gold (wear-resistant), gold is soft gold (not wear-resistant).
PCB=Printed Circuit Board ; PCBA=Printed Cirruit Board +Assembly.That is to say, PCB empty board through SMT, and then through the DIP plug-in of the whole process, referred to as PCBA.
Failure to provide sufficient time and effort for the PCB layout and wiring phase of the design can lead to problems in the manufacturing phase or functional deficiencies as the design moves from the digital domain to the physical reality.
Precautions for applying three anti - paint:1, can not let the PCB circuit board surface dripping, fluid paint, semi-humid phenomenon, 2, should ensure that the three anti paint uniform, bright, smooth, 3, can not let the surface of the paint layer of pin
Introduce two PCBA packaging technology: 1, plug-in packaging technology, the parts are placed on one side of the board, and the pin is welded on the other side, this technology is called plug-in packaging; 2, surface adhesive packaging technology, the us
First, the difference between rework and maintenance, second, rework process objectives.1, controllable, reliable, repeatable process, which can be adjusted when necessary, 2, efficient process, can be quickly and easily carried out in the production envi
After determining PCB related selection factors, the payment method should be selected, including whether to issue bills, express logistics, packaging type and flying needle test. If there are special requirements, the information should be noted.
The plate with higher Tg can increase its ability to withstand stress and deformation, but the price of the material is relatively high.
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