Thermal Characterization and Modeling of Stacked Die Packages

2005 ◽  
Author(s):  
P. Szabo ◽  
M. Rencz ◽  
V. Sze´kely ◽  
A. Poppe ◽  
G. Farkas ◽  
...  
Keyword(s):  
Steady State ◽  
Thermal Behavior ◽  
Thermal Characterization ◽  
Compact Model ◽  
Model Generation ◽  
Short Introduction ◽  
The Third ◽  
Die Attach

The main issues in the thermal characterization and modeling of stacked die packages are the appropriate model generation, and the qualification of the die attach quality between the different layers of the stacked die structures. The first part of the paper gives a short introduction of stacked die packages. The next chapter describes the main issues of steady state and transient compact model generation for the thermal behavior of stacked die packages. The third large part of the paper gives an overview of the different methodologies applied today for the quality characterization of the different die attach layers, as a major indicator of the reliability of the package.

scholarly journals Thermal characterization of carbon nanotube fibers based on steady-state electro-Raman-thermal technique

2015 ◽  
Vol 64 (12) ◽  
pp. 126501
Author(s):  
Li Man ◽  
Dai Zhi-Gao ◽  
Ying Jian-Jian ◽  
Xiao Xiang-Heng ◽  
Yue Ya-Nan
Keyword(s):  
Steady State ◽  
Carbon Nanotube ◽  
Thermal Characterization ◽  
Carbon Nanotube Fibers ◽  
Thermal Technique

scholarly journals Thermal characterization of the active layer at the Limnopolar Lake CALM-S site on Byers Peninsula (Livingston Island), Antarctica

Solid Earth ◽  
2014 ◽  
Vol 5 (2) ◽  
pp. 721-739 ◽  
Author(s):  
M. A. de Pablo ◽  
M. Ramos ◽  
A. Molina
Keyword(s):  
Thermal Behavior ◽  
Active Layer ◽  
Thermal Characterization ◽  
Active Layer Thickness ◽  
Freezing And Thawing ◽  
Thermal Amplitude ◽  
Permafrost Table ◽  
Different Depths

Abstract. The Limnopolar Lake site (A25), of the Circumpolar Active Layer Monitoring-South network (CALM-S), is located on Byers Peninsula, where the active layer thickness is monitored systematically (by mechanical probing during the thawing season and by temperature devices continuously since 2009). Air, surface, snow and ground temperature devices have been installed to monitor ground thermal behavior, which is presented and characterized here. We use the air and ground mean daily temperature values to define the following parameters: maximum, minimum and mean temperatures, the zero annual thermal amplitude, and the depth and position of the top of the permafrost table. The freezing and thawing seasons (defining their starting dates as well as their length) and the existence of zero curtain periods have also been established. We also derive apparent thermal diffusivity and plot thermograms to study the thermal behavior of the ground at different depths and seasons. After this complete thermal characterization of the active layer, we propose the potential existence of a permafrost table at approximately 130 cm in depth as well as a former transitional layer above it, and discuss the role of water in connection with the thermal behavior of the ground during the study period.

scholarly journals Thermal characterization of the active layer at the Limnopolar Lake CALM-S site on Byers Peninsula (Livingston Island), Antarctica

2014 ◽  
Vol 6 (1) ◽  
pp. 679-729 ◽  
Author(s):  
M. A. de Pablo ◽  
M. Ramos ◽  
A. Molina
Keyword(s):  
Thermal Behavior ◽  
Active Layer ◽  
Thermal Characterization ◽  
Transitional Zone ◽  
Active Layer Thickness ◽  
Freezing And Thawing ◽  
Thermal Amplitude ◽  
Permafrost Table ◽  
Different Depths

Abstract. The Limnopolar Lake CALM-S site (A25) is the unique location on Byers peninsula where the active layer thickness is systematically monitorized (by mechanical probing during the thaw season and by temperature devices continuously since 2009). An air, surface, snow and ground temperature monitoring devices have been installed to monitor ground thermal behavior. We analyzed these data to present there the active layer thermal characterization. We use the air and ground mean daily temperature data to define the following parameters: maximum, minimum and mean temperatures at the air and at different depths, the zero annual thermal amplitude depths and position of the top of the permafrost table. The freezing and thawing seasons (defining their starting dates as well as their length), and the existence of zero curtain periods has been also established. We also derive apparent thermal diffusivity and plot thermograms to study the thermal behavior of the ground at different depths. After this complete thermal characterization of the active layer, we propose the potential existence of a~permafrost table at about 130 cm in depth as well as the transitional zone above it, and discuss the role of water in connection with the thermal behavior of the ground during the study period.

Transient Thermal Characterization of a Stacked Multichip Package

2007 ◽  
Vol 4 (1) ◽  
pp. 23-30 ◽  
Author(s):  
Kimmo Kaija ◽  
Pekka Heino
Keyword(s):  
Steady State ◽  
Flip Chip ◽  
Thermal Characterization ◽  
Transient Behavior ◽  
Fe Model ◽  
Thermal Test ◽  
Transient Thermal ◽  
Temperature Responses

This paper is a case study of the thermal behavior of a stacked multichip package (SMCP). The aim is to measure temperature responses when heat is dissipated on different dice and to characterize the behavior with a compact thermal model (CTM) that accurately models steady-state and transient responses with a simple thermal RC -network. The measured package consists of three stacked layers, where each layer has one thinned flip chip attached die on an aramid interposer. The package's thermal responses were measured with thermal test dice that contain heaters and temperature sensors. The package was modeled with a finite element method (FEM) and the simulated temperature responses showed reasonable agreement with measured data. The FE model was further used to provide reference thermal data under different boundary conditions for CTM synthesis. The obtained CTM models accurately the steady-state and transient behavior and can be used as simplified model of the measured SMCP for further thermal analysis.

scholarly journals Study on Thermal Behavior of Some Biocompatible and Biodegradable Materials Based on Plasticized PLA, Chitosan, and Rosemary Ethanolic Extract

2020 ◽  
Vol 2020 ◽  
pp. 1-18
Author(s):  
Cornelia Vasile ◽  
Niță Tudorachi ◽  
Traian Zaharescu ◽  
Raluca Nicoleta Darie-Nita ◽  
Catalina Natalia Cheaburu-Yilmaz
Keyword(s):  
Thermal Behavior ◽  
Food Packaging ◽  
Ethanolic Extract ◽  
Thermal Characterization ◽  
Poly Lactic Acid ◽  
Rosemary Extract ◽  
Scanning Calorimetry ◽  
Efficient Protection ◽  
Ft Ir

Thermal characterization of some multifunctional environmentally friendly materials based on plasticized poly (lactic acid) (PLA)/chitosan (CS) and rosemary extract (R) previously obtained is presented. Differential scanning calorimetry (DSC) associated with other complex investigations such as chemiluminescence and coupled thermogravimetry (TG)/Fourier-transform infrared spectroscopy (FT-IR)/mass spectroscopy (MS) was performed in order to test both the thermal behavior and the biocomposition–property relationship. It was established that the rosemary ethanolic extract offers an efficient protection against thermoxidative degradation to the new developed plasticized PLA-based biocomposites which show good thermal properties, being suitable for both medical and food packaging applications.

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