X capacitor

In a power supply circuit, among the capacitors installed on the primary side for purposes such as removing noise, those installed between lines. Also referred to as across-the-line capacitors. When an X capacitor fails, the risk of electric shock is lower compared to a Y capacitor, but due to the risk of equipment failure, electric shock, or fire caused by a short circuit between lines, strict standards are established. The standards for X capacitors include JISC5101-14 for domestic standards and IEC60384-14 for international standards.