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
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.
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
The reason for the appearance of false welding/false welding; 1, solder pad and component pin oxidation, 2, less tin, 3, temperature is too high or too low, 4, low melting point of solder paste, 5, solder paste quality problem,
SMT patch processing PCBA overhaul includes what aspects: ① Check the electronic devices, each spot welding electronic devices are not wrong version, leakage, reverse problem exists, ② spot welding welding is not smooth, there is no abnormality, ③ query d
How to improve the welding hole of PCBA:(1) The PCB and parts will be exposed in the air for a long time to avoid moisture, (2) control the welding paste with moisture, It is very easy to cause skin pores and tin beads, (3) the environmental humidity cont
The process of moving a program to the internal storage space of the chip is generally divided into offline burning and online burning offline burning. These chips are compatible with chips in different packages through various adapters, and the chips can
PCB circuit boards will produce some bad problems in the overheating temperature, so for different materials of PCB circuit boards, the temperature resistance, need to be understood in detail, do not exceed its high limit temperature, so as to avoid the P
Measures to reduce the tin residue of PCBA tin beads: 1, attach importance to the production of steel mesh, combined with the specific component layout of PCBA board, appropriately adjust the size of the opening, so as to control the printing amount, 2, b
How does PCBA improve product quality: (1) strengthen routine maintenance of machines, (2) requirements for equipment operators, and (3) develop measures to reduce or avoid errors
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