Reflow welding has become the mainstream process of surface mounting, it depends on the influence of hot gas flow on the solder joint, colloidal flux in a certain high temperature air flow for physical reaction, achieve SMD welding, the quality of PCBA so
The reason for the appearance of false welding/false welding; 1, solder pad and component pin oxidation, 2, less tin, 3, temperature is too high or too low, 4, low melting point of solder paste, 5, solder paste quality problem,
When PCB is assembled, do not apply any solder to the top or bottom pad. Use screws with built-in washers to achieve tight contact between the PCB and the metal case/shield or ground surface bracket.
The performance of reflow heating process: (1) good wettability, (2) reduce the formation of solder ball, (3) less solder spatter when reflow temperature rises sharply, the solder paste will appear almost boiling phenomenon, causing solder particle spatte
Printed circuit boards using Bluetooth technology may experience interference, data loss, and poor signal integrity if certain precautions are not taken.
A whole machine circuit diagram is often composed of how many modules circuit diagram, read each module circuit diagram, you can understand the whole machine circuit diagram.
The temperature range can be automatically selected. It has its own refrigeration system, without external circulating water cooling device, and adopts stainless steel water pump, so that the noise is reduced and the generation of rust is eliminated, avoi
In the high frequency circuit, the noise of the power supply has an obvious influence on the high frequency signal. Therefore, the first requirement is that the power supply be low noise. Clean land is just as important here as clean power.
The more the number of signal networks, the higher the density of the device, the higher the PIN density, the higher the frequency of the signal design should be adopted as far as possible.
This paper introduces the PCB board copying industry will be involved in the future technology Wi-Fi 6 RF technology.
The process of moving a program to the internal storage space of the chip is generally divided into offline burning and online burning offline burning. These chips are compatible with chips in different packages through various adapters, and the chips can
Ink is gelatinous when standing, and is touched when the viscosity changes a property, also known as shaking, anti flow hanging
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