IEC 61191-1:2018 pdf download

IEC 61191-1:2018 pdf download.Printed board assemblies – Part 1: Generic specification
1 Scope
This part of IEC 61 1 91 prescribes requirements for materials, methods and verification criteria for producing quality soldered interconnections and assemblies using surface mount and related assembly technologies. This part of IEC 61 1 91 also includes recommendations for good manufacturing processes.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60068-2-20, Environmental testing – Part 2-20: Tests – Test T: Test methods for solderability and resistance to soldering heat of devices with leads IEC 60068-2-58, Environmental testing – Part 2-58: Tests – Test Td: Test methods for solderability, resistance to dissolution of metallization and to soldering heat of surface mounting devices (SMD) IEC 601 94, Printed board design, manufacture and assembly – Terms and definitions IEC 60721 -3-1 , Classification of environmental conditions – Part 3: Classification of groups of environmental parameters and their severities – Storage IEC 61 1 89-1 , Test methods for electrical materials, interconnection structures and assemblies – Part 1: General test methods and methodology IEC 61 1 89-3, Test methods for electrical materials, printed boards and other interconnection structures and assemblies – Part 3: Test methods for interconnection structures (printed boards) IEC 61 1 90-1 -1 , Attachment materials for electronic assembly – Part 1-1: Requirements for soldering fluxes for high-quality interconnections in electronics assembly IEC 61 1 90-1 -3, Attachment materials for electronic assembly – Part 1-3: Requirements for electronic grade solder alloys and fluxed and non-fluxed solid solders for electronic soldering applications IEC 61 1 91 -2, Printed board assemblies – Part 2: Sectional specification
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 601 94 and the following apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: • IEC Electropedia: available at http://www.electropedia.org/ • ISO Online browsing platform: available at http://www.iso.org/obp 3.1 bow deviation from flatness of a board characterized by a roughly cylindrical or spherical curvature so that, if the product is rectangular, its four corners are in the same plane 3.2 manufacturer assembler individual or company responsible for the procurement of materials and components, as well as all assembly process and verification operations necessary to ensure full compliance of assemblies with this document 3.3 objective evidence documentation agreed to between the user and the manufacturer Note 1 to entry: The documentation can be in the form of a hard copy, computer data, computer algorithms, video or other media. 3.4 process indicator detectable anomaly, other than a defect, that is reflective of material, equipment, personnel, process and/or workmanship variation 3.5 proficiency capability to perform tasks in accordance with the requirements and verification procedures detailed in this document 3.6 shadowing phenomenon where parts create a shadow of leads, lands, or other parts, which obstruct heating at reflow soldering or spreading solder at flow soldering 3.7 supplier individual or company responsible for assuring, to the manufacturer (assembler), full compliance of components and base materials with the requirements and verification procedures of this document Note 1 to entry: Components include electronic, electromechanical, mechanical components, printed boards, etc. Note 2 to entry: Base materials include solder, flux, cleaning agents, etc. 3.8 twist deviation of a rectangular sheet, panel or printed board that occurs parallel to a diagonal across its surface, so that one of the corners of the sheet is not in the plane that contains the other three corners 3.9 user procuring authority individual, company or agency responsible for the procurement of electrical/electronic hardware, and having the authority to define the class of equipment and any variation or restrictions to the requirements of this document EXAMPLE The originator/custodian of the contract detailing these requirements.