In the high-speed design, we must consider the capacitance of the parasitic parameters, quantitative calculation of the number of decoupling capacitors and the capacity of each capacitor and the specific position of the placement, to ensure that the imped
The shelf life of PCB made by OSP process and pure gold sinking process is generally 6 months after packaging. Baking is not recommended for OSP process.
It can be seen that the coordination between welding aid and welding resistance pad design plays a decisive role in improving PCBA manufacturability and welding pass-through rate.
The circuit working at high frequency should consider the interference between components. The general circuit should make parallel arrangement of components as far as possible to facilitate wiring;
the shielding effect of the electromagnetic field is not good enough for some laminated schemes in the design of 6-layer board, which has little effect on the reduction of the transient signal of the power busbar. Two examples are discussed below.
Now PCB design time is shorter and shorter, smaller and smaller board space, higher and higher device density, extremely demanding layout rules and large size components make designers
The special requirements for power transmission lines and the need to isolate noise coupling between analog and digital circuits add further complexity to the layout and wiring of mixed-signal PCBS.
How to improve SMT SMT processing efficiency: first, advance work preparation, second, ensure the SMT SMT machine running time balance, third, equipment operating parameters
The spacing and size of conductive rubber keys shall be consistent with the actual size of conductive rubber keys, and the PCB board connected with this shall be designed as a gold finger, and the corresponding gold-plated thickness shall be specified.
The larger the number of turns of common mode choke, the larger the parasitic capacitance and the worse the effect of high frequency isolation.
In PCB board copy and design work, we often have to debug and test the circuit board, the debugging of six types of module circuit board is one of them, in order to let you better understand the debugging technology of six types of module circuit board, f
Avoid running digital clock lines and high frequency analog signal lines near the power layer; otherwise, the noise from the power signal will be coupled to the sensitive analog signal.
