There will be engineering review and approval of your information, if there is a problem with the first time to combine with you! In order not to delay your time, the combination of the form must be accurate, if not combined, we will stop production!
Width and spacing of printed wire are important design parameters, which affect not only the electrical performance and electromagnetic compatibility of PCB, but also the manufacturability and reliability of PCB.
Why is lead not allowed on printed boards, assembly processes and products? There are two reasons for this: first, lead is toxic and affects the environment; Second, leaded solder is not suitable for new assembly technology.
During the installation of the reinforced frame and the PCBA, and the installation of the PCBA and the chassis, directly or forcibly install the warped PCBA or the warped reinforced frame and install the PCBA in the deformed chassis.
With sufficient theoretical basis, more practice, more learning, more summary, in order to be qualified for the PCBA circuit board maintenance post.
After the design of PCB board, the need to choose the circuit board surface treatment process, the circuit board surface treatment process is now commonly used HASL (surface spray tin process), ENIG (gold process), OSP (oxidation prevention process).
PCB performance test is a necessary test to ensure the stability of product performance after processing. It is divided into different tests according to the actual environment and purpose of product use.
Through the above five points of analysis, we should be able to find the cause of short circuit tinning of PCB board after wave soldering.
he computer has the computer circuit board, the machine has the machine circuit board, a lot of electronic products are required to be equipped with the corresponding circuit board.
The higher the TG value, the better the temperature resistance of the plate, especially in the lead-free process, high Tg is often used. High Tg means high heat resistance.
PCB wave soldering, surface welding to use detergent or pure water to clean off the pollutants on the board, with the design of electronic parts more and more diverse, but also more and more small, washing made gradually appeared some problems.
Three anti-paint, also known as PCBA electronic circuit board protective oil, the use of three anti-paint PCBA circuit board with waterproof, moisture, dust "three", cold and heat shock resistance, aging resistance, radiation resistance, salt sp...
Telegram