The IPC-7711/21C guide provides procedures for rework, repair and modification of printed board assemblies. Included in this revision are the procedures previously released as change pages, an updated general information and common procedures section, new procedures for BGAs using focused IR Reflow Systems with integral preheater and general updates to all other procedures. Color illustrations are included in many procedures. Number of pages 396. Released January 2017.
IPC-7711C/7721C Rework, Modification and Repair of Electronic Assemblies
This document covers procedures for repairing and reworking printed board assemblies. It is an aggregate of information collected, integrated and assembled by the Repairability Subcommittee (7-34) of the Product Assurance Committee of the IPC. This revision includes expanded coverage for lead free processes, and additional inspection guidelines for operations such as repair that may not have other published criteria. This document does not limit the maximum number of rework, modification or repair actions to a Printed Circuit Assembly
Class of Product
The user of the product is responsible for identifying the Class of Product. The procedure selected for action to be taken (rework, repair, modification, …) must be consistent with the Class identified by the user. The three Classes of Product are:
Class 1 – General Electronic Products
Includes products suitable for applications where the major requirement is the function of the completed assembly.
Class 2 – Dedicated Service Electronic Products
Includes products where continued performance and extended life is required, and for which uninterrupted service is desired but not critical. Typically, the end use environment would not cause failures.
Class 3 – High Performance/Harsh Environment Electronic Products
Includes products where continued high performance or performance-on-demand is critical, equipment downtime cannot be tolerated, end-use environment may be uncommonly harsh, and the equipment must function when required, such as life support and other critical systems.
Preview the IPC-7711C/7721C table of contents .pdf file.
Developed by the Repairability Subcommittee (7-34) of the Product Assurance Committee (7-30) of IPC. Users of this publication are encouraged to participate in the development of future revisions.