source:Industry News release time:2024-07-01 Article author:yu Popular:pcb
The CTI level of PCB , also known as the resistance to leakage marking
index 
, is an indicator to measure the ability of PCB materials to resist
leakage marking. The level of CTI directly affects the safety performance of
PCBs in electrical applications. The higher the CTI level, the stronger the
material's ability to resist leakage marks, thereby improving the safety and
reliability of the circuit. twelve
Choosing the appropriate CTI level is crucial in PCB design. For example, CTI values of 175 and 600 represent two different CTI levels, with 600 having a CTI level higher than 175. This means that PCB materials with a CTI value of 600 have higher resistance to the threat of leakage and marking, which can better protect the circuit from damage.
In addition, the design and manufacturing of PCBs also need to consider other factors, such as pollution levels. Pollution levels 2 and 3 correspond to different pollutant situations, which have a direct impact on the safe use of PCBs. Switching power supplies and other equipment usually choose the appropriate overvoltage level based on the pollution level to ensure the normal operation and safety of the equipment.
In summary, the CTI level of a PCB is one of the important indicators for evaluating its electrical safety performance. Choosing an appropriate CTI level is crucial to ensure the safe and reliable operation of the circuit. At the same time, other factors need to be considered, such as pollution level, to ensure that PCBs can maintain good performance under various environmental conditions.
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