... and simulation. Detailed temperature distribution caused by a single heat source is obtained using the finite element sub-modeling technique, while the temperature rise distribution caused by multiple heat sources is obtained by superimposing the finite element analysis result. Using the proposed thermal...

...Takashi Anzawa; Qiang Yu; Masanori Yamagiwa; Tadahiro Shibutani; Masaki Shiratori This paper presents a simulation method to evaluate the thermal fatigue life of a power module. A coupled electrical-thermal analysis was performed to obtain the nonuniform temperature distribution of electric current...

...Sheng Liu; Wenming Liu; Changyong Lin; Mingxiang Chen A novel ceramic packaging technology by using selective induction heating is presented. Some aspects of this packaging process, including local temperature distribution, hermeticity, tensile strength, and fracture analysis, were tested...

..., and the novelty of this work is that both 2D and 3D temperature-distribution analyses are performed. The 2D results indicate that the original thermal-via configuration can be reduced by 29%. Furthermore, the results show that the maximum temperature within the collector calculated from 3D analysis is lower than...

... was to determine if welding of the output-can onto the initiator header could produce stresses in the glass great enough to cause cracking. A finite element analysis solution was chosen to model the transient heat transfer and temperature distribution in the initiator assembly during the welding process...

... interface materials I and II, and the base of the heat sink. In this paper, an analytical approach to temperature distribution of a first level package with a nonuniformly powered die is carried out for the first time. The analytical model for two-layer bodies developed by Haji-Sheikh et al. (2003, “Steady...

...Zone-Ching Lin; Chang-Cheng Chen A molding model is established in this study based on a real integrated circuit for simulating the molding process. This paper presents both the temperature distribution and the thermal stress field of the molding model while the simulation proceeded along...

... of the solder composition increases, the fatigue life increases under 5 kA ∕ cm 2 at 150 ° C but decreases under 20 kA ∕ cm 2 at 30 ° C . Observed electromigration morphologies along with computed current density and temperature distributions on solder interconnects from the electrothermal coupling analysis...

... and conservative nature of life prediction. It was well accepted and served its role effectively for ceramic packages. In reality, an assembly is subjected to a power cycling, i.e., nonuniform temperature distribution with a chip as the only heat source and other components as heat dissipaters. This non-uniform...

... crystals and shroud-transient techniques are used to measure spatially resolved surface temperature distributions, which are used to deduce local Nusselt numbers. Dimensionless pedestal heights H / D are 0, 0.5, 1.0, and 1.5, the jet Reynolds number Re is 23,000, and the surface distance to nozzle diameter...

... temperature distribution in a simple ball grid array electronic package. Examples are presented with simulated measurements, which include random measurement errors. Regularization was applied to control numerical error when large measurement errors were added to the overspecified boundary conditions...

... 2004. Associate Editor: W. King. 01 August 2003 01 April 2004 06 10 2004 microprocessor chips thermal resistance integrated circuit packaging flip-chip devices thermal stresses temperature distribution cooling flow simulation In the past decade, simulation...

... thermal management (packaging) thermal conductivity thermal analysis thermal energy storage temperature distribution solidification melting semiconductor device packaging power semiconductor devices Phase change thermal energy storage is one of three available ways to store heat, the other...

..., the heat sink is heated uniformly at the bottom. The resulting pressure drop across the heat sink and the temperature distribution at its bottom are then measured and are compared with those obtained through the porous medium approach. Upon comparison, the porous medium approach is shown to accurately...

... in two parts: first, surface temperature distribution and velocity field data are presented for the case of the fan drawing air from the system. The flow was found to be parallel and uniform. There were symmetrical temperature gradients across the board that were readily explained in terms of board...

... stress analysis thermal stress cracking temperature distribution plastic packaging Flip chip (FC) technology can achieve the highest ratio of active silicon surface area since it does not employ the peripheral wire bonding. In this way, it can be used to achieve a very large number of fine...

... from the temperature distributions of heating panels, temperature distribution of convective gas and the provided flow velocity distributions as inputs to the numerical model. Figures 11 ( a ) and ( b ) show experimental and predicted profiles for the solder paste at a conveyor velocity of 0.8467...

...A. G. Agwu Nnanna; A. Haji-Sheikh ,, ASME Fellow; D. Agonafer,, ASME Fellow A constant heat transfer coefficient is often assumed in the computation of the temperature distribution along an extended surface. This assumption permits the use of a well-established closed form analytical solution thus...

... and R. Culham. 26 March 2002 10 06 2003 cooling packaging printed circuit layout forced convection Green's function methods temperature distribution finite element analysis Cooling Electronics Forced Convection Greens Functions Forced air cooling of electronic...

... 1 , … , r 11 are given in Table 1 . It was found 5 that when ε<0.3, the heat flux distribution produces a contact area temperature distribution which for most practical applications can be considered to be isothermal. It was reported 5 that when ε=0.4 and ε=0.5...