Voiding is inevitable in BGA soldering, but it must be managed. IPC-7095 provides guidelines on calculating the area percentage of voids via X-ray. Excessive voiding, particularly large voids (
One of the most highly cited sections of IPC-7095 is its guidelines on voiding. Voids are empty spaces or bubbles within a solder joint. IPC-7095 establishes acceptable thresholds for void size and placement, typically stating that total voiding should not exceed 25% of the ball area in an X-ray view, though specific high-reliability applications may require stricter limits. 2. Printed Circuit Board Design (Land Patterns) ipc7095 pdf download free
Because visual inspection cannot verify hidden BGA joints, IPC-7095 details alternative inspection strategies: Voiding is inevitable in BGA soldering, but it
While you may find "free" copies on file-sharing sites or unofficial repositories, these often present risks: Voids are empty spaces or bubbles within a solder joint
The latest version, , refined the guidelines to keep pace with finer-pitch BGA technology. Key areas include: