What is the focus of IPC-7711/7721?

The focus of IPC-7711/7721 is on the rework, modification, and repair of electronic assemblies. This standard provides guidelines and procedures that aim to ensure the effective and reliable handling of electronic assemblies that require modifications or repairs. It addresses various methods for soldering, component removal and replacement, and techniques for ensuring that repair processes do not compromise the integrity of the assembly.

By establishing a clear set of practices, IPC-7711/7721 helps to maintain high-quality standards in the electronics industry, ensuring that any rework or modifications can be performed safely and effectively, ultimately leading to the longevity and reliability of the repaired assemblies.

The other options, while important in their respective areas, do not align with the primary focus of IPC-7711/7721. For instance, repairing wires and cables is a narrower specialty not covered comprehensively by this standard. Similarly, standards for electronic testing and systems for quality control address different aspects of electronics manufacturing and assembly, rather than the specific practices involved in reworking and repairing electronic assemblies.