Technical Library | 2012-12-17 22:05:22.0
Package on Package (PoP) has become a relatively common component being used in mobile electronics as it allows for saving space in the board layout due to the 3D package layout. To insure device reliability through drop tests and thermal cycling as well as for protecting proprietary programming of the device either one or both interconnect layers are typically underfilled. When underfill is applied to a PoP, or any component for that matter, there is a requirement that the board layout is such that there is room for an underfill reservoir so that the underfill material does not come in contact with surrounding components. The preferred method to dispensing the underfill material is through a jetting process that minimizes the wet out area of the fluid reservoir compared to traditional needle dispensing. To further minimize the wet out area multiple passes are used so that the material required to underfill the component is not dispensed at once requiring a greater wet out area. Dispensing the underfill material in multiple passes is an effective way to reduce the wet out area and decrease the distance that surrounding components can be placed, however, this comes with a process compromise of additional processing time in the underfill dispenser. The purpose of this paper is to provide insight to the inverse relationship that exists between the wet out area of the underfill reservoir and the production time for the underfill process.
Industry News | 2012-07-12 10:34:27.0
The SMTA announced that it will have a Package-on-Package (PoP) Design and Assembly Center during their annual conference, SMTA International, taking place October 14-18, 2012 in Orlando, Florida.
Industry News | 2012-07-12 10:34:54.0
The SMTA announced that it will have a Package-on-Package (PoP) Design and Assembly Center during their annual conference, SMTA International, taking place October 14-18, 2012 in Orlando, Florida.
Training Courses | | | PCB Rework and Hand Soldering Courses
The PCB rework and hand soldering courses courses cover techniques of rework and repair of PCBs, BGAs and other electronics assemblies, and teach fundamentals of soldering of electronics assemblies.
Training Courses | | | PCB Rework and Hand Soldering Courses
The PCB rework and hand soldering courses courses cover techniques of rework and repair of PCBs, BGAs and other electronics assemblies, and teach fundamentals of soldering of electronics assemblies.
Training Courses | | | PCB Rework and Hand Soldering Courses
The PCB rework and hand soldering courses courses cover techniques of rework and repair of PCBs, BGAs and other electronics assemblies, and teach fundamentals of soldering of electronics assemblies.
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Parts & Supplies | Pick and Place/Feeders
1. Special feature 1.1 Provide the best machine configuration for customers: NXTII is the only machine with a true modular concept. It is possible to freely install a combination of units such as a work head or a component supply unit and a transpo
Parts & Supplies | Board Cleaners
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Used SMT Equipment | Chipshooters / Chip Mounters
SM411F is a high speed component placer for placing odd shaped parts, which is equipped with the platform (dual gantry) of SM411, which is a chip shooter, and the vision system of SM421. It can maximize the production speed of odd shaped parts by up
Industry News | 2011-08-24 22:37:23.0
The SMTA announced that it will hold sessions and a tutorial on Package-on-Package (PoP) surface mount stacking at their annual conference, SMTA International, taking place October 16-20, 2011 in Ft. Worth, Texas.
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