The R47 Series is constructed of metallized polypropylene film encapsulated with self-extinguishing resin in a box of material meeting the requirements of UL 94 V–0. Automotive Grade devices are available (up to 22.5 mm Lead Spacing) and meet the demanding Automotive Electronics Council's AEC–Q200 qualification requirements. For use as a electromagnetic interference (EMI) suppression filter in across-the-line applications requiring X1 safety classification. Intended for use in situations where exposure to a shock in the event of capacitor failure is not possible. X1 classified capacitors are for use only in a permanently connected apparatus with a connection to mains which cannot be loosened without the use of a tool.