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IPC-HDBK-840 supplements the solder mask requirements established in IPC specifications such as IPC-SM-840 and IPC-6012 by providing detailed information on solder mask types, application processes, pre- and post- assembly processes, characteristics and properties that are useful in the selection and use of the most appropriate mask type for a given application. Applicable to solder mask...

This specification sets the requirements for the use of electroless nickel/electroless palladium/immersion gold (ENEPIG) as a surface finish for printed boards. It establishes requirements for ENEPIG deposit thicknesses for applications including soldering, wire bonding and as a contact finish. It is intended for use by chemical suppliers, printed board manufacturers, electronics manufacturing...

The IPC/DAC-2552 standard was developed jointly with the Digital Association of China (DAC), with the purpose to use Model Based Definition (MBD) to realize efficient and high-quality digital design of board-level assembly, support electronic assembly virtual manufacturing, and enabling the digitalization from requirement to product realization for printed board assemblies. The IPC/DAC-2552...

The IPC-WP-021 white paper considers conformal coatings, like many high-performance materials, have evolved considerably since the 1990s. New coatings, such as fluoropolymers or hybrid coatings, have come on the market, many of which offer superior protection characteristics, but do not fit into the existing classifications of either MIL-I-46058 or IPC-CC-830. The IPC-WP-021 white paper discusses...

This standard establishes the generic requirements for a document set describing electronic products, and the methodology used for revision control and configuration management of the information. The generic descriptions apply to the entire document set and are used to define and maintain the electronic product. The methodology permits different grades of completeness of the documentation, as...

Published jointly with the Japan Printed Circuits Association, IPC/JPCA-2315 provides an easy to follow tutorial on the selection of HDI and microvia design rules and structures. Addresses various considerations when designing an HDI printed wiring board including design examples and processes, selection of materials, general descriptions, and various microvia technologies. Offers designers and...

During mass soldering, it is important that all solder joints reach the minimum soldering (reflow) temperature to assure metallurgical bonding of the solder alloy and the base metals to be soldered. Metallurgical bonding requires that both surfaces to be soldered, as well as the solder, reach this minimum soldering temperature for a sufficient time to allow the wetting of the solder surfaces. This...

Implementing flip chip technology in a direct chip attach (DCA) assembly presents some unique challenges for design, assembly, inspection and repair personnel. IPC-7094 delivers useful and practical information to anyone who is currently using or contemplating developing products that employ the very complex and high density methods needed for the flip chip technology. The concepts have become...

As most of the world converts to lead-free manufacturing, the concern over tin whiskers as a reliability hazard has grown due to the emergence of pure tin as a dominate component surface finish. A significant amount of research on tin whisker formation and tin whisker mitigating strategies has been performed in both commercial and defense industries. This working paper is a summary of the...

This document establishes the requirements and interactions necessary for printed board assembly processes for interconnecting high performance/high pin count IC packages. Includes information on design principles, material selection, board fabrication, assembly technology, testing strategy and reliability expectations based on end-use environments. Developed by IPC, EIA, MCNC and Sematech. 96...

This handbook is a companion reference to J-STD-001, Requirements for Soldered Electrical and Electronic Assemblies. The intent of the Handbook is to provide supporting information for the Standard, explain the "how-to" and "why" behind the criteria and provide the fundamentals for the processes to make acceptable soldered connections.

This handbook is a companion reference to J-STD-001, Requirements for Soldered Electrical and Electronic Assemblies. It describes materials, methods, and verification criteria that, when applied as recommended or required, will produce quality soldered electrical and electronic assemblies. The intent of the Handbook is to explain the ‘‘how-to,’’ the ‘‘why,’’ and fundamentals for these processes...

IPC-D-620 provides design and critical process requirements for the three product classes of cable and wire harness assemblies as well as military/space applications. It is the design requirements companion to IPC/WHMA-A-620, "Requirements and Acceptance for Cable and Wire Harness Assemblies," and its associated Space Addendum Three white papers are included to provide guidance on key topics...

This is a redline document showing the changes from IPC-A-610F with Amendment 1 to IPC-A-610G. This document provides a side-by-side comparison of the two documents and includes the figures and tables. The document shows the deleted/changed text in the IPC-A-610F with Amendment 1 pages and the new/revised text in purple highlights in the IPC-A-610G pages. Yellow pop-up boxes are also present in...

IPC-A-610 Revision E to Revision F Redline Comparison Document. This document is free to Task Group members participating in development of the standard and to Certification Centers with current training licenses for the associated Training and Certification program. CITs who are not members of the Task Group are encouraged to contact his or her MIT for a copy of the redline document.

This document provides tests that record changes in surface insulation resistance (SIR) on a representative sample of a printed circuit assembly. It quantifies any deleterious effects that might arise from solder flux or other process residues left on external surfaces after soldering, which can cause unwanted electrochemical reactions that grossly affect reliability. It uses test vehicles that...

While there are a variety of industry test vehicles for the examination of materials compatibility, most available test boards leave something to be desired as there is often a dramatic difference in materials between such test boards and produced assemblies. A test vehicle was needed which could be used for both ion chromatography and SIR testing that would be more representative of mainstream...

This handbook is an essential resource for anyone involved in manufacturing or purchasing PCBs. Hundreds of real-world, full-color photos spotlight more than 650 PCB process defects, with causes and corrective actions for each. IPC-9121 supersedes the PCB sections of IPC-PE-740A. Released March 2016

Cleaning of stencils and misprinted PCBs has taken an increasingly important role in surface mount technology. Fine and ultra-fine pitch lands, together with other advanced packages, place new demands on stencil cleaning. Paste volume is a critical issue for fine, ultra-fine, chip-scale, BGA and flip-chip components. Insufficient solder due to clogging of stencil apertures is a primary cause of...

This standard describes the design and assembly challenges for implementing Bottom Termination surface mount Components (BTCs) whose external connections consist of metallized terminals that are an integral part of the component body. The BTCs in this document include all types and forms of bottom-only termination components intended for surface mounting. This includes such industry descriptive...

The IPC-7091 intends to provide useful and practical information to those who are designing, developing or using 3D-packaged semiconductor components or those who are considering 3D package implementation. The 3D semiconductor package may include multiple die elements—some homogeneous and some heterogeneous. The package may also include several discrete passive SMT devices, some of which are...

The successor to the IPC-SM-782A is here! The document covers land pattern design for all types of passive and active components, including resistors, capacitors, MELFs, SSOPs, TSSOPs, QFPs, BGAs, QFNs and SONs. The standard provides many brand new features, including an intelligent land pattern naming convention, zero component rotations for CAD systems, and a set of three separate land pattern...

This document describes the design and assembly challenges for implementing passive and active components, in either formed or placed methodology, into a printed board. It provides useful and practical information to decision makers of formed or placed, passive or active components and helps establish inspection techniques, testing processes, and reliability validations. Users will also learn...

Status of the technology discussion on the various methodologies for mounting and interconnecting active devices to a variety of substrate materials is summarized in this document. Reviews mounting techniques of tape automated bonding (TAB), chip on board (COB) and flip chip. Examinations of the most commonly used substrate options of laminate, ceramic and silicon are also reviewed. Editor: John...

IPC-2292 standard establishes specific requirements for the design of printed electronic applications and their forms of component mounting and interconnecting structures on flexible substrates. Flexible substrates, as pertaining to IPC-2292 standard, are materials or devices which have some amount of flexibility or bendability (not rigid) but are not considered to be stretchable (e.g., fabrics...