IEC 60384-15:2017(E) applies to through-hole/leaded polar and bipolar tantalum electrolyte capacitors with solid and non-solid electrolyte for use in electronic equipment. It includes capacitors for long-life applications and capacitors for general-purpose applications.This document prescribes preferred ratings and characteristics and to select from IEC 60384-1:2016 the appropriate quality assessment procedures, tests and measuring methods and to give general performance requirements for this type of capacitor.This edition includes the following significant technical changes with respect to the previous edition:a) Revision of the structure in accordance with ISO/IEC Directives, Part 2:2016 (seventh edition) to the extent practicable, and harmonization between other similar kinds of documents.b) In addition, Clause 4 and all the tables have been reviewed in order to prevent duplications and contradictions.