0.90(Bi1/2Na1/2)TiO3-0.05(Bi 1/2K1/2)TiO3- 0.05BaTiO3 transducer for ultrasonic wirebonding applications

S. H. Choy, X. X. Wang, C. P. Chong, H. L.W. Chan, P. C.K. Liu, C. L. Choy

Research output: Journal article publicationJournal articleAcademic researchpeer-review

15 Citations (Scopus)


Lead-free piezoelectric ceramic 0.90(Bi1/2Na1/2) TiO3-0.05(Bi1/2K1/2)TiO3-0. 05BaTiO3 (BNKBT-5) rings (OD=12.7 mm, ID=5.1 mm and 2.3-mm thick) were fabricated and characterized. Four ceramic rings were used as the driving element in an ultrasonic wirebonding transducer and the performance of the transducer was characterized. The lead-free transducer was found to have comparable voltage rise and fall times as a lead-based PZT transducer and has a relatively large vibration amplitude, thus showing that BNKBT-5 has the potential to be used in fabricating lead-free ultrasonic wirebonding transducers.

Original languageEnglish
Pages (from-to)313-316
Number of pages4
JournalApplied Physics A: Materials Science and Processing
Issue number3
Publication statusPublished - 1 Aug 2006

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science


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