The development speed of LED switching power supplies has seen a significant technological leap in recent years, and the speed of new product replacement has also accelerated. As the last design step, the design of the PCB is also very important, because
The IPC-6012 standard specifies that the maximum bow and twist of the PCB with SMT is ≤0.75. Some PCBs with higher requirements such as those with BGA design, required ≤0.5, and the bow and twist of PCB without SMT is ≤1.5. Calculation method of PCB warpa
For large Components such as ICs, BGA and non-positioning connectors, 50 to 100 mil grid can be used for layout. For small compnents such as resistors, capacitors and inductors, 25 mil grids can be used for layout. Using grid points for layout can make th
Interference in the PCB can be divided into radiated interference and conducted interference. Radiated interference is the interference source that uses space as a medium to interfere its signal with another electrical network. Conducted interference use
With the fifth generation mobile communication technology (5G) standard is frozen, 5G is gradually becoming commercial. Not long ago, the head of Lenovo mobile phone in China announced on Weibo that the worlds first 5G mobile phone came from Lenovo. Then
The most commonly used PTFE material or high frequency material in PCB is ROGERS. Especially the high frequency material PCB is widely used in communication, satellite, base station, aerospace and so on.