Class-X and Class-Y capacitors must be connected directly to AC lines (line-to-neutral or line-to-ground) in order for them to perform their duties to minimize electro-magnetic interference (EMI) and to minimize radio frequency interference (RFI) so they must be rated and certified as “safety capacitors.”
| Y2X1 : Interference Suppressor | -40°C ~ +110°C (Vr derated 1.25% per °C over 85°C) | 0.001µF ~ 0.22µF | 300Vac |
|---|---|---|---|
| MKP : X2 Standard | -40°C ~ +110°C (Vr derated 1.25% per °C over 85°C) | 0.0047µF ~ 2.2µF | 310Vac |
| MKP-P : X2 Standard, Reduce Size | -40°C ~ +110°C (Vr derated 1.25% per °C over 85°C) | 0.0047µF ~ 10µF | 310Vac |
| MKP-U : X2 High Humidity | -40°C ~ +110°C | 0.027µF ~ 10µF | 310Vac / 630Vdc |
| MKP-UB : X2 Rugged Environment | -40°C ~ +110°C | 0.027µF ~ 10µF | 310Vac / 750Vdc |
| MKX1 : X1 Interference Suppression | -40°C ~ +110°C | 0.01µF ~ 10µF | 350Vac |
| MKX1 : X1 Interference Suppression | -40°C ~ +110°C | 0.001µF ~ 10µF | 480Vac |