Agency Approvals
The knowledge we have of industry standards is a direct result of our involvement in helping to shape them. We are an active participant in most domestic and international standards organizations — with many of our innovative product designs eventually becoming the standard that others follow.
Type in the certification name/number into the field below and hit "go" to find certifications assigned to Littelfuse parts.
Type in the certification name/number into the field below and hit "go" to find certifications assigned to Littelfuse parts.
UL (Underwriters Laboratories Inc.)
Canadian Standards Association (CSA)
The CSA is a non-government, non-profit association that operates internationally to set standards for products and services through tests, certification, inspection for safety and performance, including EMC and IEC testing. CSA Certification in Canada is equivalent to UL Listing in the United States and the Component Acceptance Program of CSA is equivalent to the Recognition Program at UL.
Area of Influence: Canada
IEC (International Electrotechnical Committee)
The International Electrotechnical Commission is the international standards and conformity assessment body for all fields of electrical technology. The IEC organization is different from UL and CSA, since IEC only writes specifications and does not certify. UL and CSA write the specifications, and are responsible for testing and certification. Certification to IEC specifications are given by such organizations as SEMKO (Swedish Institute of Testing and Approvals of Electrical Equipment) and BSI (British Standards Institute), as well as UL and CSA.
Area of Influence: Worldwide
Telcordia
Telcordia Technologies publishes various requirement documents to inform the industy of its and funding participants' view of proposed criteria. The Telcordia process implements the Telecommuncation Act of 1996 directives relative to the development of industry-wide requirements relating to telecommunications equipment, inlcuding integral software and customer premises equipment. Pursuant to that Act, Telcordia invites members of industry to fund and participate in the development process of such requirements.
Area of Influence: North America
Committee TR-41 of TIA (User Premises Telecommunications Requirements)
Addresses voluntary standards for telecommunications terminal equipment and systems, specifically those used for voice service, integrated voice and data service, and Internet Protocol (IP) applications. The work involves developing performance and interface criteria for equipment, systems and private networks, as well as the information necessary to ensure their proper interworking with each other, with public networks, with IP telephony infrastructures, and with carrier-provided private-line services. It also includes providing input on product safety issues, identifying environmental considerations for user premises equipment, and addressing the administrative aspects of product approval processes. In addition, TR-41 develops criteria for preventing harm to the telephone network that become mandatory when adopted by the Administrative Council for Terminal Attachments (ACTA). TR41.9 is a subcommittee in TR 41. Here is its description:
TR-41.9 Technical and Administrative Regulatory Considerations
This subcommittee is a standards formulating group that initiates proposals and monitors regulations and related matters for wireline telecommunications terminal equipment in North America.
The primary work of this subcommittee includes:
Area of Influence: North America
CENELEC (Comitee Europe de Normalisation Electrotechnique)
CENELEC develops electro-technical standards for the European Market / European Economic Area.
Area of Influence: Europe
METI (Ministry of Economy Trade and Industry)
METI approval in Japan is similar to UL Recognition in the United States. METI has its own design standard and characteristics.
Area of Influence: Japan
MITI (Ministry of International Trade and Industry)
MITI approval in Japan is similar to UL Recognition in the United States. MITI has its own design standard and characteristics.
Area of Influence: Japan
NSAI (National Standards Authority of Ireland)
The NSAI is Ireland's Standards body. NSAI facilitates the development of voluntary standard documents which manufacturers or service providers may use as an aid to meeting safety or customer requirements. It is also a leading supplier of product and systems Certifications Services, both domestically and internationally, and is the provider of Legal Metrology services in Ireland.
Military Standards
Military standards are under the jurisdiction of the U.S. Department of Defense. The following specifications govern the construction and performance of fuses suitable primarily for military electronic applications. Fuses, lamps, and holders approved to the following Military specifications are on the Qualified Products List (QPL) for that specification.
MIL-PRF-15160 and MIL-PRF-23419
These specifications govern the construction and performance of fuses suitable primarily for military electronic applications. Fuses, lamps, and holders approved to the following Military specifications are on the Qualified Products List (QPL) for that specification.
MIL-PRF-19207
This specification governs the construction and performance of fuseholders suitable for military applications.
DESC Drawing #87108
This drawing governs the construction and performance of .177" x .570" (2AG size) cartridge fuses and axial lead versions suitable for military applications. DESC #87108 designation is included in the fuse end cap marking.
FEDERAL SPECIFICATION W-F-1814
This specification governs the construction and performance of fuses with high interrupting ratings that are approved for federal applications. Fuses approved to these specifications are on the Federal Qualified Products List.
Underwriters Laboratories is a globally recognized, independent testing and certification organization that has been helping customers get their products to the market for more than a century. In addition to certifying products for safety for markets around the world, UL also tests to performance, EMC, functional safety, energy efficiency and environmental requirements.
UL's worldwide family of companies includes more than 70 laboratory, testing and certification facilities serving customers in 102 countries.
While headquartered in the United States, UL's area of influence is global.
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Canadian Standards Association (CSA)
The CSA is a non-government, non-profit association that operates internationally to set standards for products and services through tests, certification, inspection for safety and performance, including EMC and IEC testing. CSA Certification in Canada is equivalent to UL Listing in the United States and the Component Acceptance Program of CSA is equivalent to the Recognition Program at UL.
Area of Influence: Canada
IEC (International Electrotechnical Committee)
The International Electrotechnical Commission is the international standards and conformity assessment body for all fields of electrical technology. The IEC organization is different from UL and CSA, since IEC only writes specifications and does not certify. UL and CSA write the specifications, and are responsible for testing and certification. Certification to IEC specifications are given by such organizations as SEMKO (Swedish Institute of Testing and Approvals of Electrical Equipment) and BSI (British Standards Institute), as well as UL and CSA.
Area of Influence: Worldwide
Telcordia
Telcordia Technologies publishes various requirement documents to inform the industy of its and funding participants' view of proposed criteria. The Telcordia process implements the Telecommuncation Act of 1996 directives relative to the development of industry-wide requirements relating to telecommunications equipment, inlcuding integral software and customer premises equipment. Pursuant to that Act, Telcordia invites members of industry to fund and participate in the development process of such requirements.
Area of Influence: North America
Committee TR-41 of TIA (User Premises Telecommunications Requirements)
Addresses voluntary standards for telecommunications terminal equipment and systems, specifically those used for voice service, integrated voice and data service, and Internet Protocol (IP) applications. The work involves developing performance and interface criteria for equipment, systems and private networks, as well as the information necessary to ensure their proper interworking with each other, with public networks, with IP telephony infrastructures, and with carrier-provided private-line services. It also includes providing input on product safety issues, identifying environmental considerations for user premises equipment, and addressing the administrative aspects of product approval processes. In addition, TR-41 develops criteria for preventing harm to the telephone network that become mandatory when adopted by the Administrative Council for Terminal Attachments (ACTA). TR41.9 is a subcommittee in TR 41. Here is its description:
TR-41.9 Technical and Administrative Regulatory Considerations
This subcommittee is a standards formulating group that initiates proposals and monitors regulations and related matters for wireline telecommunications terminal equipment in North America.
The primary work of this subcommittee includes:
- Development, maintenance and interpretation of technical requirements to prevent network harm (e.g. 47CFR Part 68, TIA-968) development and maintenance of related administrative requirements, guidelines and procedures
- Development and maintenance of test methods and guidelines
- Submission of technical and administrative documents to the ACTA for adoption
- Advising and responding to others (e.g. FCC, ACTA, Industry Canada, committees or individuals) on regulatory issues in the telecommunications terminal equipment environment
- Efforts to foster harmonization with CS-03, other North American regulatory requirements and industry standards
Area of Influence: North America
CENELEC (Comitee Europe de Normalisation Electrotechnique)
CENELEC develops electro-technical standards for the European Market / European Economic Area.
Area of Influence: Europe
METI (Ministry of Economy Trade and Industry)
METI approval in Japan is similar to UL Recognition in the United States. METI has its own design standard and characteristics.
Area of Influence: Japan
MITI (Ministry of International Trade and Industry)
MITI approval in Japan is similar to UL Recognition in the United States. MITI has its own design standard and characteristics.
Area of Influence: Japan
NSAI (National Standards Authority of Ireland)
The NSAI is Ireland's Standards body. NSAI facilitates the development of voluntary standard documents which manufacturers or service providers may use as an aid to meeting safety or customer requirements. It is also a leading supplier of product and systems Certifications Services, both domestically and internationally, and is the provider of Legal Metrology services in Ireland.
Military Standards
Military standards are under the jurisdiction of the U.S. Department of Defense. The following specifications govern the construction and performance of fuses suitable primarily for military electronic applications. Fuses, lamps, and holders approved to the following Military specifications are on the Qualified Products List (QPL) for that specification.
MIL-PRF-15160 and MIL-PRF-23419
These specifications govern the construction and performance of fuses suitable primarily for military electronic applications. Fuses, lamps, and holders approved to the following Military specifications are on the Qualified Products List (QPL) for that specification.
MIL-PRF-19207
This specification governs the construction and performance of fuseholders suitable for military applications.
DESC Drawing #87108
This drawing governs the construction and performance of .177" x .570" (2AG size) cartridge fuses and axial lead versions suitable for military applications. DESC #87108 designation is included in the fuse end cap marking.
FEDERAL SPECIFICATION W-F-1814
This specification governs the construction and performance of fuses with high interrupting ratings that are approved for federal applications. Fuses approved to these specifications are on the Federal Qualified Products List.
