Which parts of the industrial PCB are most prone to failure?
2024-01-08
Due to the complex operating environment, the failure rate of industrial PCBA board is higher than that of ordinary circuit boards, so it is necessary to understand the vulnerable parts on the circuit board when repairing. So, which parts of the industrial PCBA board are most prone to failure? Next, STG Electronic will introduce it to you.
1. The place where the design is unreasonable is most likely to fail
The first is the problem of heat dissipation, and many circuit boards are damaged because of poor heat dissipation design; The second is that the copper foil wire design of the circuit board is too thin, which is easy to burn out due to overcurrent, making the motherboard unable to work.
2. It is easy to malfunction in places where it is frequently used
For example, the drive motor of the circuit board, the shaft, the switch tube of the switching power supply, the common buttons of the operation panel, etc.
3. Components with heavy load, high power and high working voltage are the most prone to failure
The power supply, drive circuit, power control device and other components of the circuit board are generally close to the heat sink, if the protection measures are not enough, the heat dissipation is not good, it is easy to become the first place to fail.
4. The protection circuit is the most easily damaged
The valuable chips or components on the circuit board are equipped with protective equipment, and once the circuit board is abnormal, these protective circuits are the first to go wrong.
5. The interface and cable of the inline seat and connector are easy to be in poor contact or broken
For example, the poor contact between the board and the slot, the poor contact between the wire plug and the terminal, and the virtual soldering of components are all such phenomena.
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