If the contact or line on the PCB circuit board needs to contact with the parts over and over again, with the passage of the product office hours, the appearance of the metal will reveal a certain wear, so the contact is not good.
Circuit presets and circuit board presets are designed to produce satisfactory circuit boards and successfully achieve the value of research and development and the target of mass production.
Specific office process: incoming materials → inspection data → visual inspection → conforming to standards →FQA sampling → conforming to standards → packaging → not suitable for standards → disposal → investigation.
PCBA test stand is an indispensable test tool in SMT patch processing and production. It mainly tests the produced circuit board, and determines whether the board is a good product by the detected signals, pictures, sound temperature and so on.
PCB is also known as the Printed Circuit Board (Printed Circuit Board), it can realize the circuit connection between electronic components and function realization, is also an important part of the power supply circuit design.
Maintain the integrity of signal transmission and prevent the "ground projectile phenomenon" caused by the division of ground wire.
How many times is the laser, just a few steps.
To form the pad, the solder shield (insulating layer) forming process is required, as well as to protect the copper foil and provide better insulation.
To introduce the most detailed process of SMT patch:1, PCB board, 2, three anti-paint coating
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.
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
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