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This standard is intended as a guideline in the proper preparation of a metallographic sample (microsection) of a printed board. The finished microsection is used for evaluating the quality of the laminate system and plated structures (e.g. PTHs and vias). Microsection sample preparation is regarded by many as a highly developed skill. The guidelines in this standard discuss the many variables and...

The European Union’s Restriction of Hazardous Substances (RoHS) legislation has had a profound impact on the electronics industry. One of the restricted substances, lead (Pb), is commonly used in alloys with tin for component finishes, printed board finishes and solders. Pb-free materials directly affect product performance, reliability and service life in many ways. There have been numerous...

This standard, developed jointly by IPC and the Electronic Industries Association (EIA) establishes the construction detail requirements for balls and other terminal structures on Ball Grid Array (BGA) packages. It also establishes a set of designations and expectations for product performance. A large variety of terminal structures are recognized for a wide range of applications ranging from...

IPC-4121 provides industry-approved guidelines for selecting core constructions for multilayer printed wiring boards (PWBs). The specification sheets in the document categorize the different core constructions by laminate type and nominal thickness. The constructions are rated for characteristics such as dielectric constant (DK), dimensional stability (DS), flatness, smoothness and drillability...

Establishes the specific requirements for organic mounting structures used to interconnect chip components, which in combination form the completed functional organic single-chip module (SCM-L) or organic multichip module (MCM-L) assembly. Includes the quality and reliability assurance requirements that must be met for their acquisition. For use with IPC-6011. 25 pages. Released February 1998.

IPC-1753 Laboratory Declaration Standard will allow for the electronic exchange of laboratory chemical analysis reports between supply chain members. Companies are being asked to provide laboratory analytic data to show compliance with the RoHS Directive and other customer requirements, such as halogen-free. This standard will allow for the expedited exchange of the necessary laboratory...

IPC JEDEC J-STD-020 is used to determine what moisture-sensitivity-level (MSL) classification level should be used so that surface mount devices (SMDs) can be properly packaged, stored and handled to avoid subsequent thermal and mechanical damage during the assembly solder reflow attachment and/or repair operation. J-STD-020 covers components to be processed at higher temperatures for lead-free...

Used in conjunction with IPC-2221A, IPC-2225 establishes the requirements and other considerations (thermal, electrical, electromechanical and mechanical) for the design of Single Chip Module (SCM-L), MCM or MCM-L assemblies. Key concepts include adhesive interconnection information, typical die attach materials, microvia material properties and relationships with DFM and DFE.

Defines a machine readable input format for Computer Numerical Control (CNC) drilling and routing machine tools used by the printed wiring board industry. The format may be used to transfer drilling and routing information between printed board designers, manufacturers and users or as the output CNC standard from converters that expand higher level design input such as IPC-D-350 data. Provides a...

Covers classification and requirements for finished fabrics woven from quartz fiber yarns that are intended as a reinforcing material in laminated plastics for electrical and electronic use. 13 pages. Released February 1992.

This standard establishes construction detail requirements for bumps and other terminal structures used for Flip Chip Scale carriers. The specific standards for different terminations are appropriately matched to a particular interconnection process and include such diverse terminations as solder bumps, columns, non-melting stand-offs and conductive polymer deposits. The document articulates a set...

This specification covers qualification and performance of rigid printed boards, including single-sided, double-sided, with or without plated-through holes, multilayer with or without blind/buried vias and metal core boards. It addresses final finish and surface plating coating requirements, conductors, holes/vias, frequency of acceptance testing and quality conformance as well as electrical...

Establishes the requirements for the evaluation of liquid and dry film solder mask material and for the determination of the acceptability of use on a standard printed board system. IPC-SM-840 provides two classes of requirements, T and H, to reflect functional performance requirements and testing severity based on industry/end use requirements. Coverage is given to adhesion, material qualification...

Covers the classification and requirements for finished fabrics woven from "S" glass, electrical grade glass fiber yarns intended as a reinforcing material in laminated plastics for electrical and electronic use. 12 pages. Released February 1992.

This specification covers qualification and performance requirements of rigid mass laminated panels for use in multilayer printed boards. Testing procedures and criteria are addressed. 21 pages. Released July 1994.

Provides information on multichip module technology, including parametric data, design and manufacturing information and a proposed categorization of various approaches to multichip interconnect substrate technologies based on dielectric family. 120 pages. Released August 1992.

Covers the materials, qualification, certification and performance requirements for multilayer polymer thick film (PTF) printed, extrusion deposited, or otherwise applied conductor, insulator and through-hole technology. This specification may also be used for procurement of single and double-sided boards. 59 pages. Released November 1989.

This document will provide insight into the theory behind tin whisker formation as it is known today and, based on this knowledge, potential mitigation practices that may delay the onset of, or prevent tin whisker formation. The potential effectiveness of various mitigation practices will also be briefly discussed. References behind each of the theories and mitigation practices are provided. It...

This standard prescribes test methods, defect definitions, acceptance criteria, and illustrations for assessing the solderability of electronic component leads, terminations, solid wires, stranded wires, lugs and tabs. A test method for the resistance to dissolution/dewetting of metallization is also included in the standard. Intended for use by both vendors and users, J-STD-002D was developed by...

Contains backplane design information from the fabrication and assembly perspective. Includes sections on design and documentation; fabrication; assembly; repair; and inspection. 17 pages. Revised September 1982.

Describes the usage of libraries within the processing and generation of information files. The data contained within covers both the definition and usage of internal (existing within the information file) and external libraries. The libraries can be used to make generated data more compact and facilitate data exchange and archival. The subroutines within a library can be used one or more times...

Describes an intelligent, digital data transfer format for describing component mounting information. Supplements IPC-D-350 and is for designers and assemblers. Data included are pin location, component orientation, etc. This document is frozen; no future updates are planned. 33 pages. Released January 1995.

Describes the relationship between elements used in electromechanical design and packaging of printed boards. Includes descriptions for logical and physical elements necessary as input to a design system, as well as the network of interconnection description between the various electronic parts. Provides the capability of describing all elements in their final form upon design completion. The...

Describes an intelligent, digital format for transfer of drawings between printed wiring board designers, manufacturers and customers. Also conveys additional requirements, guidelines and examples necessary to provide the data structures and concepts for drawing description in digital form. Supplements ANSI/IPC-D-350. Pertains to four basic types of drawings: master drawings, schematics, assembly...

This standard covers the requirements and considerations for the design of multilayer hybrid circuits based on industry manufacturing capabilities. 80 pages. Released December 1989.