R52 (miniature) series metallized polypropylene film EMI suppression capacitors for harsh environmental conditions. This series is constructed of metallized polypropylene film encapsulated with self-extinguishing resin in a box of material that meets the requirements of UL 94 V–0. It is suitable for worldwide use in electromagnetic interference (EMI) suppression in across-the-line applications that require X2 safety classification. Intended for use in situations in which capacitor failure would not result in exposure to electric shock. Typical applications include connection in series with the mains, capacitive power supplies and energy meters with special emphasis in automotive applications for severe ambient conditions.