Clamping Voltage Characteristics of ZPCCE-Based Varistors with Sintering Temperature

소결온도에 따른 ZPCCE계 바리스터의 제한전압특성

  • Published : 2004.08.01


The surge characteristics of ZnO varistors consisting of $ZnO-{Pr}_6{O}_11-CoO-{Cr}_2{O}_3-{Er}_2{O}_3$ceramics were investigated at various sintering temperatures. As sintering temperature raises, the varistor voltage was decreased from 341.2 to 223.1 V/mm, the nonlinear exponent was decreased from 64,9 to 44.1. On the other hand, the leakage current exhibited a minimum(0.64 $\mu$A) at 134$0^{\circ}C$, The clamping capability was slightly deteriorated with increasing sintering temperature. On the whole, the ZPCCE-based ZnO varistors exhibited good clamping voltage characteristics as exhibiting the clamping voltage ratio of 1.85 ∼ 1.92 approximately at surge current of 100 A.


  1. 반도체 セラミクスと その應用 ニュ-ケラスシ-リズ 編集委員會
  2. 電氣學會技術報告 no.474 酸化亞鉛避電器の 特性と 評價試驗法 電氣學會
  3. Ceram. Bull. v.66 Zine oxide varistors with praseodymium oxied K. Mukae
  4. J. Amer. Ceram. Soc. v.76 Compositional effects on the liquid-phase sintering of praseidymium oxides-based zinc oxieds varistors A. B. Alles;R. Puska;G. Callahan;V. L. Burdick
  5. 전기전자재료학회논문지 v.13 no.8 ZnO-$Pr_6O_{11}-CoO-Er_2O_3$계 바리스터의 안정성에 관한 연구 남춘우
  6. 전기전자재료학회논문지 v.13 no.9 ZPCCE계 바리스터의 미세구조와 전기적 성질 및 안정성 남춘우;윤한수;류정선
  7. 전기전자재료학회논문지 v.14 no.8 Pr6O11계 ZnO 바리스터의 전기적 안정성에 소결온도의 영향 남춘우;류정선
  8. 전기전자재료학회논문지 v.14 no.10 Pr6O11계 ZnO 바리스터의 DC 가속열화특성 남춘우;류정선
  9. Mater. Lett. v.47 no.3 The nonlinear properties and stability of ZnO-$Pr_6O_{11}-Cr_2O_3-Er_2O_3$ ceramic varistors C. W. Nahm
  10. J. Mater. Sci. Lett. v.20 no.5 The nonlinear properties and d.c degradation characteristics of ZPCCE-based varistors C. W. Nahm;H. S. Yoon;J. S. Ryu
  11. J. Mater. Sci. v.36 no.7 Effect of $Er_2O_3$ addition on the microstructure, electrical properties, and stability of $Pr_6O_{11}$-based ZnO ceramic baristors C. W. Nahm;C. H. Park
  12. J. Mater. Sci. Lett. v.21 no.3 ZnO-$Pr_6O_{11}-Cr_2O_3-Er_2O_3$ based-ceramic varistors with high stability of nonlinear properties C. W. Nahm
  13. J. Amer. Ceram. Soc. v.55 no.97-12 Lineal intercept technique for measuring grain sizc in two-phase polycrystalline ceramics J. C. Wurst;J. A. Nelson
  14. IEC 1000-4-series, Elctromagnetic Cmpatibility International Electrothechnical Committee