Measures the material's resistance to electrical leakage current. 3. Mechanical and Environmental Properties
IPC-4101 is structured around "slash sheets" (e.g., IPC-4101/21, IPC-4101/126). Each sheet defines specific material requirements. For example, some sheets define halogen-free materials, while others focus on high-speed, low-loss characteristics required for 5G applications. 2. Glass Transition Temperature ( Tgcap T sub g Tgcap T sub g
). The IPC-4101 specifications allow for validation of these properties. 3. Reliability Testing (CTE and Tgcap T sub g