Numerical study of thermal performance of FC-PBGA assembly with extruded-fin heatsink

T. P. Liu, G. H. Wu, H. Y. Lai

Research output: Contribution to journalArticlepeer-review


The trend in microelectronics is toward increasingly higher input/output, higher component density and higher electrical performance, which makes thermal enhancement of package performance an increasingly important issue. In both natural and forced convection environments, three-dimensional finite element simulation is used to study thermal performance of a flip-chip plastic ball grid array (FC-PBGA) assembly with an extruded-fin heatsink on top of the assembly. The finite element model is complete enough to include key elements such as bumps, solder balls, substrate, printed circuit board, vias and ground planes for both signal and power. Temperature fields are simulated and presented for several FC-PBGA assembly confi gurations. Thermal resistance is calculated to characterize and compare the thermal performance by considering alternative design parameters of the extruded-fin heatsink and the lid.

Original languageEnglish
Pages (from-to)365-372
Number of pages8
JournalJournal of the Chinese Society of Mechanical Engineers, Transactions of the Chinese Institute of Engineers, Series C/Chung-Kuo Chi Hsueh Kung Ch'eng Hsuebo Pao
Issue number4
Publication statusPublished - 2012 Aug 1

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering


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