Ddr3 pcb layout rules2020/10/27
The first step is to determine the topology (only useful for multiple DDR chips)
In a word, DDR1 / 2 adopts star structure, DDR3 adopts chrysanthemum chain structure. The extensi ...
What is the function and principle of PCB via?2020/10/25
What is the function and principle of grounding via hole near the wiring via hole?
According to their functions, the through holes of PCB board can be divided into the following ...
FFC cable is different from FPC cable.2020/10/25
FPC cable, also known as flexible PCB. It is used for data transmission of moving parts and active areas according to the industry specifications. The arrangement is mainly divided into two type ...
What is the difference between PCB schematic diagram and layout?2020/10/25The schematic diagram only indicates the electrical connection relationship between components, and does not represent the actual connection. Therefore, we need to layout these connection relationships ...
What factors affect the quality of SMT laser stencil?2020/10/25
About Stencils:
Stencils (SMT stencil): it is a special SMT mold; its main function is to help solder paste deposition; the purpose is to transfer accurate amount of solder paste ...
What is PWM?What is the principle of PWM?2020/10/25
PWM concept:
PWM is the abbreviation of "pulse width modulation". It is a very effective technology to control analog circuit by digital output of microprocessor. It is widely used ...
Several key points of PCB design post inspection.2020/10/24
Several key points of PCB design in the later stage are as follows
When a PCB has completed the layout and wiring, and the connectivity and spacing are checked and no error is re ...
