: Focused deeply on mechanical failures such as laminate pad cratering.
As BGA pitches shrink below 0.8mm, you cannot fit a via between pads. You must put the via in the pad. IPC-7095 provides specific rules: ipc-7095 pdf
Some websites offer a free 10-page "Introduction to IPC-7095." This is not the full standard. It omits the voiding tables and thermal reliability curves. You cannot pass a customer audit with this. : Focused deeply on mechanical failures such as
If you are working with Ball Grid Arrays (BGA) or Land Grid Arrays (LGA), the design and assembly process is fraught with potential pitfalls—from solder joint reliability to rework challenges. IPC-7095 provides specific rules: Some websites offer a
IPC-7095, "Design and Assembly Process Implementation for BGAs," serves as the industry-standard guide for managing BGA and Fine-Pitch BGA technology, with the latest 7095E (2024) revision focusing on modern defect prevention. It provides comprehensive criteria for design, assembly, X-ray inspection, and rework to ensure high-reliability soldering, including specific quantitative thresholds for solder ball voids. Purchase the latest standard at Accuris .