TY - JOUR
T1 - Temperature prediction for system in package assembly during the reflow soldering process
AU - Deng, Shang Shiuan
AU - Hwang, Sheng Jye
AU - Lee, Huei Huang
PY - 2016/7/1
Y1 - 2016/7/1
N2 - A system in package (SiP) is a number of integrated circuits integrated into a single module. SiP can perform various functions and are often used in small systems such as mobile phones and wearable devices. The fabrication of SiP can be challenging due to their small size and high complexity. For example, during the reflow soldering process, non-uniform temperature distribution can occur, affecting the reliability of the SiP. In this study, numerical simulation is used to investigate the thermal behavior of a SiP during the reflow process and the model is validated via experimental measurements. A forced convection reflow oven was modeled using computational fluid dynamics software where the heating of the SiP assembly was performed using a conjugate heat transfer model. A complex flow field in the reflow oven was observed from the simulation results, showing a free jet region, a stagnation flow region, a wall jet region, a recirculation region, and vortices. The simulation results agreed well with experimental data. The method developed here can accurately predict the temperature distribution in a reflow oven and allow the design of temperature profiles for the reflow process that result in minimal temperature variations across the SiP assembly.
AB - A system in package (SiP) is a number of integrated circuits integrated into a single module. SiP can perform various functions and are often used in small systems such as mobile phones and wearable devices. The fabrication of SiP can be challenging due to their small size and high complexity. For example, during the reflow soldering process, non-uniform temperature distribution can occur, affecting the reliability of the SiP. In this study, numerical simulation is used to investigate the thermal behavior of a SiP during the reflow process and the model is validated via experimental measurements. A forced convection reflow oven was modeled using computational fluid dynamics software where the heating of the SiP assembly was performed using a conjugate heat transfer model. A complex flow field in the reflow oven was observed from the simulation results, showing a free jet region, a stagnation flow region, a wall jet region, a recirculation region, and vortices. The simulation results agreed well with experimental data. The method developed here can accurately predict the temperature distribution in a reflow oven and allow the design of temperature profiles for the reflow process that result in minimal temperature variations across the SiP assembly.
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U2 - 10.1016/j.ijheatmasstransfer.2016.03.008
DO - 10.1016/j.ijheatmasstransfer.2016.03.008
M3 - Article
AN - SCOPUS:84961798920
SN - 0017-9310
VL - 98
SP - 1
EP - 9
JO - International Journal of Heat and Mass Transfer
JF - International Journal of Heat and Mass Transfer
ER -