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Lead inductance of tape carrier package for high-speed LSI's

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6 Author(s)
Takada, M. ; Mater. & Electron. Devices Lab., Mitsubishi Electr. Corp., Hyogo, Japan ; Gofuku, E. ; Narutaki, Y. ; Shimamoto, H.
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Lead inductances of a 432-lead TCP (Tape Carrier Package) with a metal cap are evaluated by treating the leads as multiconductor-coupled lines. A useful inductance evaluating method is obtained by using a quasi-TEM electromagnetic field analysis and matrix operations. This method is demonstrated for the TCP. By a proximity effect of grounded conductors, the effective self inductance of the longest lead can be reduced to 7.3 nH. This result indicates that TCP's can be applied to high-speed LSI's of clock rates up to 100 MHz

Published in:

Components, Packaging, and Manufacturing Technology, Part B: Advanced Packaging, IEEE Transactions on  (Volume:17 ,  Issue: 4 )