An alternating current that varies less than 1,000 times per second is called a low frequency current, and one that varies more than 1,000 times per second is called a high frequency current, and radio frequency is such a high frequency current.
these technical documents and production documents for PCB board making, component welding, fly needle testing, circuit board debugging, and complete the complete copy of the original circuit board template.
Copy board to change the board industry said that the car is growing in popularity, automotive sensor market demand will continue to maintain a growing trend.
It can be used for ventilation or smoke exhaust in case of fire. It has been widely used in subway, tunnel, power plant, airport and other large projects.
What are the features of SMT processing BGA assembly: 1, the BGA pin (welding ball) is located under the package body, 2, before mounting must confirm whether it meets the process requirements, 3, in the PCB design should be as far as possible to lay it a
Product introduction:The bridge is a new generation of component parameter measuring instrument, using the latest testing technology in this field. The powerful test function and superior measurement performance make the product squeeze into the internati
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
How to improve the welding hole of PCBA:(1) The PCB and parts will be exposed in the air for a long time to avoid moisture, (2) control the welding paste with moisture, It is very easy to cause skin pores and tin beads, (3) the environmental humidity cont
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.
Ordinary Tg sheet is above 130 degrees, High-Tg is generally above 170 degrees, and medium Tg is above 150 degrees. The Tg of the substrate has been improved, covering heat resistance, moisture resistance, chemical resistance, stability and so on.
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.
Telegram