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

  • 제11권2호
  • /
  • Pages.121-127
  • /
  • 1998
  • /
  • 1226-7945(pISSN)
  • /
  • 2288-3258(eISSN)
한국전기전자재료학회 (The Korean Institute of Electrical and Electronic Material Engineers)
권호 표지

Ca 첨가가 PTCR 써미스터의 전기적 특성에 미치는 영향

The Effects of Ca Addition on Electrical Properties of PTCR Thermistor

  • 김병수 (인하대학교 전기공학과 신소재연구실) ;
  • 김종택 (인하대학교 전기공학과 신소재연구실) ;
  • 김철수 (전자부품종합연구소) ;
  • 김용혁 (경원전문대 전기과) ;
  • 이덕출 (인하대학교 전기공학과 신소재연구실)
  • 투고 : 1997.10.08
  • 심사 : 1998.01.06
  • 발행 : 1998.02.15
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초록

In this paper, to develop PTCR(Positive Temperature Coefficient of Resistance) thermistor with high withstanding voltage, Ca were added to. the compositions of $(Ba_{0.9165-X}-Sr_{0.08}-Ca_X-Y_{0.0035})TiO_3+MnO_2$ 0.02wt%+$SiO_2$ 0.5wt%. the effects of Ca additions were researched according the increasing of Ca from 0[mol%] to 20[mol%], and the electrical properties were investigated. As increasing Ca additions from 0[mol%] to 20[mol%], the grain size of the specimens was reduced from 11.1[${\mu}m$] to 6.15[${\mu}m$], and also the sintered density was reduced from 5.43[$g/cm^3$] to 5.05[$g/cm^3$] and their the breakdown voltages were increased from 163[V/mm] to 232[V/mm]. It is shown that the breakdown voltage was increased with amount of Ca additions.

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