What is 94V on PCB?
We often see words like 94-VO on the PCB, which are added by the circuit board factory. PCB LAYOUT boards can be distinguished by flame-retardant characteristics, and they can basically be divided into flame resistant PCB (UL94-VO, UL94-V1 grade) and non-flame resistant (UL94-HB grade) substrates. With the rapid development of electronic product technology, there are higher performance requirements for CCL. In recent years, as more attention has been paid to environmental protection issues, a new type of non-bromine-free CCL has been divided into flame-retardant CCL, which can be called "green flame-retardant CCL". PCB design is classified from the performance of CCL, and is divided into general performance CCL, low dielectric constant CCL, high heat resistance CCL (normal board L is above 150 ℃), low thermal expansion coefficient CCL (usually used on package substrates) ) And other types.
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