片式钽电容器浪涌稳定性研究

打开文本图片集

关键词：片式钽电容器；浪涌稳定性；水汽；温度；真空

中图分类号：TN60

文献标识码：A

DOI：10.14106/j.cnki.1001-2028.2025.1221

引用格式：田超， 邓俊涛，胡鹏， 等. 片式钽电容器浪涌稳定性研究 [J]. 电子元件与材料， 2025， 44（1）： 120-126.

Reference format： TIAN Chao， DENG Juntao，HU Peng， et al. Surge stability study of chip tantalum capacitors [J]. Electronic Components and Materials， 2025， 44（1）： 120-126.

Surge stability study of chip tantalum capacitors

TIAN Chao， DENG Juntao， HU Peng， ZHENG Chuanjiang， WANG Fenghua

（China Zhenhua （Group） Xinyun Electronic Components Co.， Ltd.， Guiyang 550018， China）

Abstract：  The surge stability of chip tantalum capacitors is critical to the safety and reliability of circuit systems. The effects of moisture， temperature and vacuum on surge stability were investigated by surge breakdown voltage and surge current tests. The results show that saturated moisture can increase the surge breakdown voltage of polymer chip tantalum capacitors by about 18% and reduce the 1 ms surge current by more than two orders of magnitude with respect to the dry state due to anomalous transient effects. From -55 ℃ to 125 ℃， the surge breakdown voltage decreases by about 20%， and the surge current gradually increases. The 1 ms surge currents of all MnO2 chip tantalum capacitors all fall within the milliampere range， while that of the polymer chip tantalum capacitors varies with temperature and has an extreme value at the temperature that determines the moisture in the capacitors. The anomalous transient effect is enhanced at low temperature， and saturated moisture could reduce the 1 ms surge current of the polymer chip tantalum capacitors at -55 ℃ by more than five orders of magnitude compared to the dry state. The surge stability of the MnO2 chip tantalum capacitors increases under vacuum operation， while that of the polymer chip tantalum capacitors decreases. The research results are important to support the rational selection and application of chip tantalum capacitors.

Keywords：chip tantalum capacitor; surge stability; moisture; temperature; vacuum

片式钽电容器是电路系统不可或缺的通用元件，具有容积效率高、可靠性高和工艺兼容性好等优异性能，是消费电子、汽车电子、航空航天和医疗器械等领域最受欢迎的表面贴装电容器之一，为电子电路的微型化做出了重要贡献[1-4]。（剩余11020字）