Voiding is one of the most common issues in BGA assembly. IPC-7095 provides clear criteria for acceptable void percentages, distinguishing between surface-level voids and hidden voids within the solder ball.
The solder mask overlaps the copper pad, dictating the pad's final exposed size. This provides excellent pad anchoring for ruggedized applications but can introduce stress concentration points at the mask edge. Via-In-Pad Management
The IPC-7095 PDF covers a wide range of topics related to PCB design, manufacturing, and assembly. Some of the key aspects of the standard include: ipc-7095 pdf
The IPC-7095 document is a copyrighted publication and must be purchased from official distributors. Unauthorized sharing or downloading of the PDF is a violation of intellectual property rights.
Extensive information on identifying and preventing common BGA-specific anomalies such as: Voiding is one of the most common issues in BGA assembly
Addressing the higher processing temperatures and wetting differences of SAC alloys (Tin-Silver-Copper).
Criteria for acceptable void percentages (typically Unauthorized sharing or downloading of the PDF is
The standard is applicable to the complete lifecycle of BGA technology, including: