Characterization of PCB Embedded Package Materials for SiC MOSFETs

Fengze Hou, Wenbo Wang, Tingyu Lin, Liqiang Cao*, G.Q. Zhang, J.A. Ferreira

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

19 Citations (Scopus)
778 Downloads (Pure)


In this paper, a novel fan-out panel-level printed circuit board (PCB) embedded package technology for silicon carbide (SiC) MOSFET power module is presented to address parasitic inductances, heat dissipation, and reliability issues that are inherent with aluminum wires used in conventional packaging scheme. To withstand high temperature beyond 175 °C and high voltage over 1.2 kV and improve thermomechanical reliability of the fan-out panel-level PCB embedded SiC power module, bismaleimide-triazine (BT) laminate and prepreg with high-temperature stability, high dielectric strength, coefficient of thermal expansion (CTE) matching with SiC, and high T-g are selected as PCB embedded package materials. Then, high-temperature stabilities, dielectric breakdown strength, and thermomechanical performances of the embedded materials are characterized. The experimental results show that the PCB embedded materials can withstand high temperature beyond 200 °C and a high voltage above 1.2 kV. T-g is as high as over 260 °C, and CTE is matching with SiC. Besides, in order to provide one guideline for the high-temperature and high-pressure laminating process during the PCB embedded SiC MOSFETs packaging, cure kinetics of BT prepreg are analyzed. The results show that 1-h curing time at 280 °C curing temperature and 2-h curing time at 210 °C curing temperature can ensure the full cure of the BT prepreg.

Original languageEnglish
Article number8666143
Pages (from-to)1054-1061
Number of pages8
JournalIEEE Transactions on Components, Packaging and Manufacturing Technology
Issue number6
Publication statusPublished - 2019

Bibliographical note

Accepted author manuscript


  • High temperature
  • high voltage
  • material characterization
  • printed circuit board (PCB) embedded package
  • silicon carbide (SiC) MOSFETs


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