Die-To-Die Stress Becomes A Major Issue


Stress is becoming more critical to identify and plan for at advanced nodes and in advanced packages, where a simple mismatch can impact performance, power, and the reliability of a device throughout its projected lifetime. In the past, the chip, package, and board in a system generally were designed separately and connected through interfaces from the die to the package, and from the packag... » read more

Challenges And Approaches To Developing Automotive Grade 1/0 FCBGA Package Capability


Automotive Grade 1 and 0 package requirements, defined by Automotive Electronics Council (AEC) Document AEC-100, require more severe temperature cycling and high temperature storage conditions to meet harsh automotive field requirements, such as a maximum 150°C device operating temperature, 15-year reliability and zero-defect quality level. Moreover, increased integration of device functionali... » read more

3nm: Blurring Lines Between SoCs, PCBs And Packages


Leading-edge chipmakers, foundries and EDA companies are pushing into 3nm and beyond, and they are encountering a long list of challenges that raise questions about whether the entire system needs to be shrunk onto a chip or into a package. For 7nm and 5nm, the problems are well understood. In fact, 5nm appears to be more of an evolution from 7nm than a major shift in direction. But at 3nm, ... » read more

Using Digital Image Correlation To Determine BGA Warpage


Digital image correlation (DIC) is a non-contact, full-field displacement, optical measurement technique. It is often used in the following applications: Material characterization Coefficient of thermal expansion (CTE) Glass transition temperature Young’s modulus Poisson’s ratio Sample testing for fatigue and failure In situ monitoring of displacements and str... » read more