1. The role of X2 safety capacitor is conventionally anti-electromagnetic interference. It is generally connected in series in the circuit between the neutral wire and the live wire. It is suitable for high frequency, DC, AC, coupling, and jumper pulse circuits. Its characteristics are: it can withstand overpressure shock; it has excellent flame retardant and moisture-proof ability; it is wrapped in a plastic shell with PBT passing UL94V-0 grade, and flame-retardant UL94V-0 epoxy resin () encapsulation filling. His structure is ：Metalized polypropylene film is wound, and zinc-aluminum alloy (ratio: 60:10) sprayed on the end surface to ensure reliable CP wire welding reliability and over-current capability. The tinning thickness of the CP wire used in X2 safety capacitors is ≥8u, and the conductivity is ≥20%
2. The function of X2 safety capacitor is resistance-capacitance step-down. Features: small size, suitable for high-density component circuit boards; small high-frequency loss, can withstand AC spikes and surges, strong overcurrent capability; special zinc-aluminum ratio; combined with self-designed detailed manufacturing processes; small capacity attenuation (Long-term application of 250VAC, 50HZ, capacity attenuation within 5% per year) Long service life; PBT material shell packaging has good appearance consistency; Fire rating B; temperature resistance 110°C.
3. The third function of X2 safety capacitor, it can be used in parallel and used as DC filter. The disadvantages of traditional film capacitors are (easy to catch fire; short life span; irregular dimensions; easy to crack in the encapsulation).
X2 safety capacitors are also called metalized polypropylene film anti-interference film capacitors. There are many manufacturers on the market, and the named models are also different. The above is the role of X2 safety capacitor.