Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
권호 표지
DOI QR코드

DOI QR Code

The Electrical Properties of High Voltage Mutilayer Chip Capacitor with X7R by addition of Er2O3 and Glass Frit

고압용 X7R 적층 칩 캐패시터의 Er2O3 및 유리프릿 첨가에 따른 전기적 특성

  • 윤중락 (삼화콘덴서공업(주) 연구소) ;
  • 김민기 (삼화콘덴서공업(주) 연구소) ;
  • 정태석 (삼화콘덴서공업(주) 연구소) ;
  • 우병철 (삼화콘덴서공업(주) 연구소) ;
  • 이석원 (호서대학교 정보제어공학과)
  • Published : 2008.05.01
Download PDF
⟨ Previous Next ⟩

Abstract

To manufacture the MLCC with X7R for high voltage stability, $BaTiO_3-MgO-MnO_2-Y_2O_3$ with $(Ba_{0.4}Ca_{0.6})SiO_3$ glass frit was formulated. Based on this composition, the addition of $Er_2O_3$ showed that TCC(Temperature Coefficient Capacitance) at $85^{\circ}C$ was improved from 5 % to ${\sim}0\;%$, but the dielectric constant and IR (Insulation Resistance) were decreased. The glass frit improved the dielectric constant and IR, so the appropriate contents of $Er_2O_3$ and glass frit were 0.6 mol% and 1 wt%, respectively. It showed that the dielectric constant and RC constant were 2,550 and 2,000 (${\Omega}F$), respectively in the sintering condition at $1250^{\circ}C$ in PO2 $10^{-7}$ Mpa. The MLCC with $3.2{\times}1.6$ (mm) size and $1\;{\mu}F$ was also suited for X7R with the above composition.

Keywords

References

  1. H. Kishi, N. Kohzu, J. Sugino, H. Ohsato, Y. Iguchi, and T. Okuda, 'The effect of rare- earth (La, Sm, Dy, Ho and Er) and Mg on the microstructure in $BaTiO_3$', J. Eur. Ceram. Soc., Vol. 19, p. 1043, 1999 https://doi.org/10.1016/S0955-2219(98)00370-7
  2. 이석원, 윤중락, 'X7R 적층칩 세라믹 캐패시터 조성의 희토류첨가에 따른 유전특성', 전기전자재료학회논문지, 16권, 12호, p. 1080, 2003
  3. H. Chazono and H. Kishi, 'DC‐electrical degradation of the BT‐based materials for multilayer ceramic capacitor with Ni internal electrode: Impedance analysis and micro- structure', Jpn. J. Appl. Phys., Vol. 40, p. 5624, 2001 https://doi.org/10.1143/JJAP.40.5624
  4. Electronic Industries Association, Specification, #RS198
  5. 문 환, 김민기, 전현표, 안재평, 윤중락, 정태석, '첨가물의 형태가 MLCC X7R 조성의 유전특성 및 미세구조에 미치는 영향', 한국세라믹학회논문지, 40권, 7호, p. 644, 2003
  6. 윤중락, 우병철, 이헌용, 이석원, '고용량 적층 세라믹 캐패시터에서 설계 및 제조공정에 따른 전기적 특성 평가', 전기전자재료학회논문지, 20권, 2호, p. 118, 2007 https://doi.org/10.4313/JKEM.2007.20.2.118
  7. T. Tsurumi, H. Adachi, H. kakemoto, S. Wada, Y. Mizuno, H. Chazono, and H. Kishi, 'Dielectric properties of $BaTiO_3$-based ceramics under high electric field', Jpn. J. Appl. Phys., Vol. 41, Part 1, No. 11B, p. 6929, 2002 https://doi.org/10.1143/JJAP.41.6929