CBB电容的特性结构、主要参数及应用详细介绍

Release time:2022-12-21
author:Ameya360
source:网络
reading:2347

  什么是CBB电容?CBB电容也称聚丙烯电容,CBB电容的组成原理其实比较简单,就是两块平行带点板,中间绝缘介质组成芯子,两块板各有一个引出,即两电极。电容量10p--10μ,额定电压:63--2000V。能代替大部分聚苯或云母电容,用于要求较高的电路。性能与聚苯相似但体积小,稳定性略差。

CBB电容的特性结构、主要参数及应用详细介绍

  CBB电容的结构:无感CBB由2层聚丙乙烯塑料和2层金属箔交替夹杂然后捆绑而成,有感CBB由2层聚乙烯塑料和2层金属箔交替夹杂然后捆绑而成。

  CBB电容的特性:CBB电容具有损耗小、抗湿性强、电气性能优良、可靠性好、容量大、使用寿命长和良好的自愈性能。代替大部分聚苯或云母电容,用于要求较高的电路。

  常见CBB电容规格:

  CBB11  CBB12   CBB13   CBB15   CBB16   CBB18   CBB19

  CBB20   CBB21   CBB22   CBB23   CBB24   CBB28   CBB48

  CBB60   CBB61   CBB62   CBB65   CBB66   CBB69   CBB70

  CBB71   CBB72   CBB80   CBB81   CBB90   CBB91   CBB92

  CBB111   CBB112   CBB231   CBB241 CBB411

  CBB电容的主要参数

  CBB电容型号不同,容量;电压;各参数及应用均有不同,需根据自己各方面要求来进行选型,以下为CBB主要参数。

  1、容量。以CBB22电容为例,它的容量范围是:0.0047-3.3Uf。

  2、误差。常见的误差范围有:±5%(J),±10%(K),±20%(M)。

  3、尺寸。这个最多,而且还可以定制生产。

  4、电压。主流电压主要有250V,400V,630V。

  5、材质。

  6、脚距脚长。

  CBB电容的工作原理

  无极性,绝缘阻抗很高,频率特性优异(频率响应宽广),而且介质损失很小。基于以上的优点,所以薄膜电容器被大量使用在模拟电路上。尤其是在信号交连的部份,必须使用频率特性良好,介质损失极低的电容器,方能确保信号在传送时,不致有太大的失真情形发生。介电常数较高,体积小,容量大,稳定性比较好,适宜做旁路电容。聚苯乙烯薄膜电容,介质损耗小,绝缘电阻高,但是温度系数大,可用于高频电路。

  CBB电容的应用场合

  CBB电容器广泛应用于各种电子精密仪器、各种小型电子设备中作为谐振、高频、耦合、滤波、旁路。在所有的塑胶薄膜电容当中,又以聚丙烯(PP)电容和聚苯乙烯(PS)电容的特性为显著,当然这两种电容器的单价也比较高。


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