Y capacitor influence conduction solution

The importance of the Y capacitor in the line is not negligible. It can be said that if the Y capacitor does not exist, then there is no life guarantee. A capacitor that is connected between the live and ground lines and between the neutral and ground lines is called a Y capacitor. Y capacitors ensure that these capacitors meet all safety standards and requirements.

At present, many power supply factories have designed their power supply to be ultra-small or ultra-thin in order to make their products have a selling point. This invisible brings some pressure and challenge to engineers designing products, because the small size brings a lot of trouble to the PCB layout. Product EMC is still difficult to handle. Take the example of a product 42W, the volume is only half of the volume of the traditional product, the transformer, Y1, MOS tube is very close, the ENI cold state and the hot state test are very different, but the 105V Y5V is used. The material Y1 capacitor effect is not ideal, why is this?

Method:

1: Looking for a better material Y capacitor, it is impossible to change the board, and move the position of the Y capacitor. 2: Switch to Y5U material, Y5U is already very good, if it is not ideal, it is reasonable to say that it should be tested by the heat engine.