WKO Vishay Draloric 440 VAC/300 VAC AC SMD Capacitors
This datasheet describes the Vishay Draloric WKO series of ceramic AC capacitors designed for safety class X1 (440 V AC) and Y2 (300 V AC) applications. It lists electrical ratings, dielectric strength, dissipation factor, insulation resistance, temperature range, coating type, dimensions, and impedance characteristics.
The document also includes ordering codes, tolerance options, lead configurations, and approval marks such as IEC, UL, and RoHS compliance, helping designers select the appropriate part for their circuits.
| Rated Voltage (X1) | 440 V AC, 50 Hz |
|---|---|
| Rated Voltage (Y2) | 300 V AC, 50 Hz |
| Dielectric Strength Between Leads | 2600 V AC, 50 Hz, 2 s |
| Dissipation Factor (tan δ) | ≤ 25 × 10⁻³ |
| Insulation Resistance | ≥ 6 × 10⁹ Ω |
| Temperature Range | -40 °C to +125 °C |
| Coating | Epoxy, dipped, insulating, flame‑retarding UL 94V‑0 |
| Impedance Measurement Condition | Ta = 20 °C, lead length 50 mm |
The dielectric strength between leads is tested at 2600 V AC, 50 Hz for 2 seconds (destructive test up to 60 seconds).
They are specified for operation from –40 °C to +125 °C.
Yes, the datasheet states the components are RoHS compliant.