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. 44 pages. Released May 1998.