Core and key points of SMT process: The goal of SMT process is to produce qualified solder joints. A good solder joint depends on the right pad design, the right amount of solder paste and the right reflow temperature curve
PCB hard board and FPC soft board difference: 1. Rigid PCB: often used as motherboard, cannot bend, 2. Flexible board: FPC also known as flexible circuit board, can be bent
The reasons for the appearance of virtual welding in PCBA processing are as follows: 1. Oxidation of pad and component pins; 2. Less tin; 3. The temperature is too high or too low, 4 welding paste melting point is low, 5, solder paste quality problems
When designing and wiring PCB, it is required to do as much as possible:1. If the wiring space permits, insert a ground wire or ground plane between the two lines with serious crosstalk, which can isolate and reduce crosstalk. 2. When electromagnetic fiel
5 suggestions to solve the problem of component shortage: 1. Expand the breadth and depth of cooperation between component suppliers; 2. Order to be prepared in advance, 3. Manage priority, 4. Reduce component loss, 5. Respect suppliers
The performance of PCB board is determined by the material used (high Q value), wiring design and several layers of board. The quality of PCB board has nothing to do with PCB color
PCBA batch processing success of the four secrets: one, planning in advance, two, looking for suppliers, three, evaluation of capacity and capacity, four, trust your suppliers
There are five common principles in PCB design: component arrangement rules, according to the signal direction layout principle, electromagnetic interference prevention principle, thermal interference suppression principle, adjustable component layout pri
PCBA processing requirements for PCB board; 1, PCB size,2, PCB board side width,3, PCB bending,4, PCB board Mark point,5, PCB welding pad
The process process of PCBA can be roughly divided into four main links: SMT patch processing →DIP plug-in processing →PCBA testing → finished product assembly
PCBA contract material processing advantages: one, PCB, two, small order, three, shorter PCBA processing cycle, four, supplier responsibility is more clear, five, client to manufacturing end seamless link, six, very suitable for small enterprises
Pad can be divided into 7 categories, according to the shape of the distinction is as follows: 1. Square pad,2. Round pad,3. Island pad,4. Teardrop pad,5. Polygon pad,6. Oval pad,7. Open pad
