摘要
过流保护器要求芯片尺寸为φ5mm×2.2mm,电阻值为15?,耐电压AC330V。采用液相施主掺杂和添加钙等方法优化配方制成PTCR材料。经复阻抗谱、SEM及XRD等测试分析表明,材料的微观结构得到了明显改善,PTC性能得以提高。当x(Mn(NO3)2)为0.47%时,材料的居里点为70℃、室温电阻率为14?·cm、温度系数为11.5%℃–1、耐压强度大于165V/mm。
The required over-current protection chip size of our task is φ5mm×2.2mm, and the corresponding resistance and voltage durability are 15 Ω and 330 V（AC）. Using liquid-phase donor doping and calcium adding etc method to optimize the formulation, a PTCR material was acquired, Through complex impedance spectra, SEM, XRD etc. tests, it was proved that the microstructure and PTC properties of the material were improved. When x（Mn（NO3）2）=0.47%, The Curie point of the material is 70℃, room temperature resistivity is 14Ω· cm, temperature coefficient of resistance （ TCR ） is 11.5%℃^-1, voltage durance is over 165 V/mm.
出处
《电子元件与材料》
CAS
CSCD
北大核心
2006年第8期61-63,69,共4页
Electronic Components And Materials
关键词
电子技术
通讯设备
过流保护器
液相施主掺杂
PTCR
electronic technology
communication apparatus
over-current protection
liquid-phase donor doping
PTCR
