The ESD activity is captured by a test instrument (EUT) by discharging from the ESD simulator to the surface of the EUT and near the EUT. The severity level of ...
The etching process is one of the basic steps in the process. To put it simply, the base copper is covered by the resist layer, and the copper that is not prote...
The numerical control device is the core of the entire numerical control system, and its hardware structure can be divided into a large-board structure and a fu...
The role of surface tension in welding:Surface tension is in the opposite direction to the wetting force, so surface tension is one of the factors that are detr...
The main measures to reduce surface tension and viscosity in pcba welding are as follows.①Increase the temperature. Elevating the temperature can increase the m...
1. Definition of solder maskEssentially, the delineation provided by any EDA tool is incorrect; the CAM vector file specifies deviations from an assumed continu...
1) Shared clock tracesIt is better to use a radial topology connection for fast rising edge signals and clock signals than to use a single common drive source n...
1. Layout1) The clock crystal and related circuits should be placed in the center of the PCB and have a good ground plane, not near the I/O interface. The clock...
Principle 1: PCB clock frequency exceeds 5MHZ or signal rise time is less than 5ns, generally need to use multi-layer board design.Reason: The signal loop area ...