PCB News - Misunderstandings of PCB multi-layer board cleaning

Misunderstandings of PCB multi-layer board cleaning

1. PCB multilayer cleaning "three taboos"

1. Avoid using a brush to clean

Most of the brushes are made of animal hair. In the process of brushing, due to mutual friction, electrostatic induction will inevitably be generated, and some of the tiny components on the PCB circuit board are very susceptible to interference and even breakdown Components, leading to more serious consequences; in addition, when the brush is cleaned, it is easy to leave some hairs, which will cause unnecessary trouble in the transmission of the PCB circuit board. Therefore, it is forbidden to use brushes to clean up dust.

2. Avoid blowing balloons

Most people think that using a balloon to blow is an ideal method, which is effective for some dry PCB boards, but it is not very effective for damp PCB boards. Because the damp dust is usually relatively firmly attached to the PCB circuit board, it cannot be blown off at all. In other words, even if it can be blown off, it may blow dust particles between the component pins and get stuck there. For large-scale integrated circuits, the pins are denser, and this situation is even more serious. In this way, it is necessary to prevent the use of balloons to solve the dust problem.

3. Avoid tapping gently with your hands

For the dust on the surface of the PCB circuit board, many people choose to turn it over and pat lightly with their hands. In fact, this way, while reducing the dust, it is easier to loosen the connections of various PCB circuit board components. Since the welding of PCB circuit boards is very precise, a little carelessness will cause serious consequences.

2. PCB multilayer cleaning "three essentials"

1. It is best to avoid dusty places to solve the problem of PCB circuit board dust. It is necessary to start at the root cause and reduce the application in dust-intensive situations. For example, squares, stairs, windows, etc.

2. Choose a professional cleaning department

3. Always check the PCB circuit board. The dust on the PCB circuit board is caused by the accumulation of days and days. If you develop good habits of use and maintenance, then it becomes easy to solve the problem of PCB circuit board dust.

Currently, only functional online testing and static characteristic analysis of devices on the circuit board can be performed. Therefore, whether the faulty circuit board can be completely repaired in the end, it must be installed on the original equipment for inspection. In order to get the correct result of this inspection process, to judge whether the circuit board is repaired. At this time, it is best to first check whether the power supply of the device is correctly supplied to the circuit board according to the requirements.

ipcb is a high-precision, high-quality PCB manufacturer, such as: isola 370hr PCB, high-frequency PCB, high-speed PCB, ic substrate, ic test board, impedance PCB, HDI PCB, Rigid-Flex PCB, buried blind PCB, advanced PCB, microwave PCB, telfon PCB and other ipcb are good at PCB manufacturing.