printed circuit board with enough creepage distance in the high voltage circuit

Published:2011/6/15 5:13:00 Author:chopper | Keyword: printed circuit board, creepage distance, high voltage circuit | From:SeekIC

In the power supply circuit,there should be enough interval among lines for security.The interval is usually called creepage distance. A side circuit often should be added 220V voltage or above,therefore we needa creepage distance that can stand the high voltage.The usual creepage distance is 5OOV/1mm.But the distance is not enough if it is used in the high humidity environment.In this case, non-corroding resin should be printed on the surface of printed plate and so does the dampproof coating.Additionally,high voltage circuit can increase creepage distance by slotting the lines,just as follows.



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