无铅材料被认为是对传统的基于铅的电子互连材料的重大技术破坏，这对航空航天和国防行业尤其重要，因为在这些行业，安全性不能受到损害，适用的可靠性数据仍然稀缺。在开发经过验证的数据和建模方法之前，考虑无铅航空航天和国防产品及系统的项目需要采取额外的步骤，其中许多步骤会增加成本和进度。在IPC-WP-014A白皮书中，PERM委员会提供了关键建议，提供了在航空航天和国防产品和系统中实现无铅部署的方法，以帮助维持产品安全性、经济性和可持续性。 IPC-WP-014修订版A白皮书提供了最新信息，介绍了在创建经验证的建模方法方面为无铅研发争取美国联邦资金的努力。

Pb-free materials are considered a major technology disruption to traditional Pb-based interconnect materials for electronics, which is of particular concern for the aerospace & defense industries where safety cannot be compromised and applicable reliability data remains scarce. Until validated data and modelling methods are developed, projects considering Pb-free Aerospace & Defense products and systems need to adopt additional steps, many of which add cost and scheduling. Within the IPC-WP-014A white paper the PERM Council provides key recommendations that offer a way to approach Pb-free deployment in Aerospace & Defense products and systems to assist in maintaining product safety, affordability and sustainability. The IPC-WP-014 revision A white paper provides updated information on the effort to secure U.S. federal funding for Pb-free research and development in creating validated modelling methods.