The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper presents a reliability based optimization modeling approach demonstrated for the design of fine pitch ball grid array (fpBGA) structure. In this study the focus is on the strategy for handling the uncertainties in the package design inputs and their implementation into the design optimization modeling framework. The analysis of thermo-mechanical behavior of the package is carried out to...
Warpage is one of the major concerns in manufacturing BGA, CSP, POP or QFN based array packages because a reasonably flat package is critical to successful singulation and board level assembly processes. Warpage of a package is a result of curing shrinkage of encapsulated mold compounds (EMC) and CTE mismatch between various packaging materials. In a completed package, all components are bound together...
In this study, five different plastic substrates manufactured for Pb-free PBGA assembly were tested. Thermo-gravimetric analysis (TGA), scanning electron microscope (SEM) and X-ray analysis were employed to disclose the material compositions, microstructure and filler loading. Elastic modulus and Poisson's ratio of the substrates were determined at room temperature by tensile tests. Thermo-mechanical...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.