电容型号不同，参数自然就不相同。薄膜电容同样不例外，薄膜电容怎么读参数？以下图为例 ：

　　Different capacitor models naturally lead to different parameters. Film capacitance is no exception, how to read the parameters of film capacitance? The following figure is an example:

　　1、CBB22为金属化薄膜电容器的型号，属于其中一类，为聚丙烯薄膜电容器。

　　CBB22 is the model of metallized film capacitor, which belongs to one category and is polypropylene film capacitor.

　　2、105代表容量，此种表示法为“三位法”，即105=10*10（5）pF=1.0uF， 注：10（5）=10的五次方。

　　105 stands for capacity, which is "three position method", i.e. 105 = 10 * 10 (5) pf = 1.0uf, note: 10 (5) = 10 to the fifth power.

　　电容的基本单位用法拉（F）表示，其它单位还有：毫法（mF）、微法（uF）、纳法（nF）、皮法（pF）。其中：1法拉=103毫法=106微法=109纳法=1012皮法。

　　The basic unit of capacitance is expressed in farad (f), and other units are: millimetre (MF), micromethod (UF), nanomethod (NF) and skin method (PF). Among them, 1 farad = 103 nm = 106 MF = 109 nm = 1012 PF.

　　3、J代表电容器容量等级：K（-/+10%），G（-/+2%）、H（-/+3%）、J（-/+5%）、K（-/+10%）、M（-/+20%）。

　　J represents capacitor capacity class: K (- / + 10%), G (- / + 2%), H (- / + 3%), J (- / + 5%), K (- / + 10%), m (- / + 20%).

　　4、630V表示电容器的额定电压，使用时不用超过这个值（电容器厂家一般设计留有余量，但不推荐超过额定电压使用）。

　　630V refers to the rated voltage of the capacitor, which should not be exceeded when used (the manufacturer of the capacitor generally has allowance for design, but it is not recommended to use the capacitor above the rated voltage).

　　额定电压指的是电容在最低环境温度和额定环境温度下可连续加在电容器的最高直流电压有效值，一般直接标注在电容器外壳上，如果工作电压超过电容器的耐压，电容器击穿，造成不可修复的永久损坏。

　　Rated voltage refers to the maximum effective value of DC voltage that can be continuously applied to the capacitor at the lowest ambient temperature and rated ambient temperature. Generally, it is directly marked on the capacitor shell. If the working voltage exceeds the withstand voltage of the capacitor, the capacitor will break down and cause irreparable permanent damage.