This document describes the features and characteristics of Vishay Roederstein AC-Capacitors. These capacitors belong to the Class X2 AC 275 V (Code pos. 9 = 2) (MKT) category, with a maximum pulse rise time (du/dt) of V/µs, a rated voltage of AC 275 V, 50/60 Hz, and a permissible DC voltage of DC 630 V. The terminals of the capacitors are insulated stranded copper wire, type LiY 0.5 mm2 (or AWG 20), with stripped and tinned ends. The coating is a plastic case, epoxy resin sealed, flame retardant UL 94V-0. The climatic testing class according to EN 60068-1 is 40/100/56. For more technical data, please see page 21 (Document No 26504).
The F1779 series are X2 class AC suppression capacitors designed for 275 V operation in 50/60 Hz power line applications. They feature a polypropylene film dielectric with metal‑evaporated electrodes and a flame‑retardant UL 94V‑0 plastic case.
Key specifications include an AC rated voltage of 275 V, a permissible DC voltage of 630 V, capacitance values from 0.01 pF to 2.2 µF, and compliance with RoHS (lead‑free). The datasheet also lists insulation resistance, dissipation factor, test voltage, and various safety approvals such as UL 1283 and IEC 60384‑14.
| Rated AC Voltage | 275 V, 50/60 Hz |
|---|---|
| Permissible DC Voltage | 630 V |
| Capacitance Range | 0.01 pF – 2.2 µF (E12 series) |
| Capacitance Tolerance | +20 % / –10 % |
| Dissipation Factor (tan δ) at 1 kHz | < 0.1 % |
| Insulation Resistance (C < 0.33 pF) | 30 GΩ average, 15 GΩ minimum |
| Time Constant (C > 0.33 pF) | 10 000 s average, 5 000 s minimum |
| Dielectric Material | Polypropylene film |
| Electrode Type | Metal evaporated |
| Construction | Metallized film capacitor, single design |
The F1779 capacitor is rated for AC 275 V at 50/60 Hz.
Yes, the product is completely lead‑free and RoHS compliant.
The capacitor uses a polypropylene film dielectric.
The maximum permissible DC voltage is 630 V.