IEC/TC 40 - Capacitors and resistors for electronic equipment
To prepare international standards for: a) Capacitors, resistors, thermistors and varistors intended for use in electronic equipment. b) Capacitors, resistors and inductors and complete electromagnetic interference (EMI) suppression filter units for EMI suppression (see note). c) Passive integrated circuits or networks containing resistors, capacitors, inductors or their combinations. For the dimensional standardization of the final package, requirements laid down by TC 47 shall be adopted whenever possible. d) Packaging of electronic components for automatic handling, which is an activity undertaken on behalf of all relevant component technical committees. e) Electric double layer capacitors for use in electric and electronic equipment. Note: In this work, use has to be made as far as possible of any relevant work of TC 51 on inductors, the CISPR on the measurement of EMI suppression characteristics and TC 77 on electromagnetic compatibility (EMC). Liaison has also to be maintained with TC 61, TC 66, TC 108 and other appropriate IEC Technical Committees on the safety aspects of EMI suppression components and filter units.
Condensateurs et résistances pour équipements électroniques
Pour la préparation des normes internationales : a) Condensateurs, résistances, thermistances et varistances destinés à être utilisés dans les équipements électroniques. b) Les condensateurs, résistances et inductances et les unités de filtre à suppression d’interférences électromagnétiques (voir note) c) Circuits intégrés passifs ou réseaux contenant des résistances, condensateurs et des inducteurs et leur combinaison. d) Emballage des composants électronique pour la manutention automatique, activité entreprise par les comités techniques compétent. e) Condensateurs électriques à double couche pour une utilisation dans les équipements électriques et électroniques. Note: Dans ce travail, l'utilisation doit être faite dans la mesure du possible, des travaux pertinents du TC 51 sur les inducteurs, le CISPR sur la mesure des caractéristiques de suppression EMI et TC 77 sur la compatibilité électromagnétique (CEM). Les liaisons doivent également être maintenues avec les TC 61, TC 66, TC 108 et d'autres comités techniques appropriées IEC sur les aspects de sécurité des composants de suppression d’interférence électromagnétiques et les unités de filtration.
General Information
Frequently Asked Questions
IEC/TC 40 is a Technical Committee within the International Organization for Standardization (ISO). It is named "Capacitors and resistors for electronic equipment" and is responsible for: To prepare international standards for: a) Capacitors, resistors, thermistors and varistors intended for use in electronic equipment. b) Capacitors, resistors and inductors and complete electromagnetic interference (EMI) suppression filter units for EMI suppression (see note). c) Passive integrated circuits or networks containing resistors, capacitors, inductors or their combinations. For the dimensional standardization of the final package, requirements laid down by TC 47 shall be adopted whenever possible. d) Packaging of electronic components for automatic handling, which is an activity undertaken on behalf of all relevant component technical committees. e) Electric double layer capacitors for use in electric and electronic equipment. Note: In this work, use has to be made as far as possible of any relevant work of TC 51 on inductors, the CISPR on the measurement of EMI suppression characteristics and TC 77 on electromagnetic compatibility (EMC). Liaison has also to be maintained with TC 61, TC 66, TC 108 and other appropriate IEC Technical Committees on the safety aspects of EMI suppression components and filter units. This committee has published 288 standards.
IEC/TC 40 develops ISO standards in the area of Information technology. The scope of work includes: To prepare international standards for: a) Capacitors, resistors, thermistors and varistors intended for use in electronic equipment. b) Capacitors, resistors and inductors and complete electromagnetic interference (EMI) suppression filter units for EMI suppression (see note). c) Passive integrated circuits or networks containing resistors, capacitors, inductors or their combinations. For the dimensional standardization of the final package, requirements laid down by TC 47 shall be adopted whenever possible. d) Packaging of electronic components for automatic handling, which is an activity undertaken on behalf of all relevant component technical committees. e) Electric double layer capacitors for use in electric and electronic equipment. Note: In this work, use has to be made as far as possible of any relevant work of TC 51 on inductors, the CISPR on the measurement of EMI suppression characteristics and TC 77 on electromagnetic compatibility (EMC). Liaison has also to be maintained with TC 61, TC 66, TC 108 and other appropriate IEC Technical Committees on the safety aspects of EMI suppression components and filter units. Currently, there are 288 published standards from this technical committee.
The International Organization for Standardization (ISO) is an independent, non-governmental international organization that develops and publishes international standards. Founded in 1947 and headquartered in Geneva, Switzerland, ISO brings together experts from 170+ member countries to share knowledge and develop voluntary, consensus-based standards that support innovation and provide solutions to global challenges.
A Technical Committee (TC) in ISO is a group of experts responsible for developing international standards in a specific technical area. TCs are composed of national member body delegates and work through consensus to create standards that meet global industry needs. Each TC may have subcommittees (SCs) and working groups (WGs) for specialized topics.





