How do we effectively handle, sort, or integrate dies with air bridges into packages or onto PCBs for assembly? This task is far more intricate than working with dies devoid of such delicate structures. The challenge lies not only in precision but also in the careful balance required to avoid damage.
The process begins with an exhaustive analysis of the die map. Every air bridge structure must be meticulously identified and mapped out. Standard vacuum pick-up tools, which might work for simpler dies, pose a significant risk here. The fragile air bridges could be easily compromised, leading to costly errors. Hence, the creation of a custom pick-up tip is not merely advisable but essential.
This custom tip, crafted with exacting detail, must contact the die at multiple points. Crucially, each of these contact points must be strategically placed to avoid any air bridge structures, which demands a high level of precision. The distribution of these points across the die is equally important, as it ensures that the die is supported uniformly without exerting undue pressure on any single area. This balance is delicate, contingent on the available space and the specific configuration of the die.
Designing and fabricating such a custom rubber tip is no small feat. It’s a process that typically spans two to three weeks, reflecting the complexity and precision required.
Consider the image below: a die densely populated with air bridge structures, where each contact point of the rubber tip has been meticulously chosen to avoid these delicate features. The interplay between the rubber tip and the die is a testament to the precision and care required in this process.
If your project involves dies with air bridges that need expert sorting, Intech has the specialized capabilities to handle such tasks with the utmost precision. Do not hesitate to reach out to us for assistance.
