1. 额定容量 Rated capacitance:

    电容器容量的设计值，通常在电容器上显示。

    The capacitance value for which the capacitor has been

    designed and which is usually indicated upon it. 

2. 类别温度范围 Category temperature range: 

    电容器设计连续工作温度的范围，是由类别温度所定义的。

    The range of ambient temperatures for which the capacitor 

    has been designed to operate continuously; This is defined 

    by the temperature limits of the appropriate category. 

3. 上限类别温度 Upper category temperature: 

    电容器连续工作下最高的环境温度。

    The maximum ambient temperature for which a capacitor 

    has been designed to operate continuously. 

4. 下限类别温度 Lower category temperature: 

    电容器连续工作下最低的环境温度。

    The minimum ambient temperature for which a capacitor 

    has been designed to operate continuously. 

5. 额定温度 Rated temperature: 

    可连续施加额定电压的最大环境温度。

    The maximum ambient temperature at which rated voltage 

    may be continuously applied. 

6. 额定电压 Rated voltage: 

    最大的直流电压或最大有效值交流电压或脉冲电压的峰值，

    可在下限类别温度与额定温度之间任一温度下连续载入于电

    容器的电压。

    The maximum direct voltage or the maximum RMS 

    alternating voltage or peak value of pulse voltage which 

    may be applied continuously to a capacitor at any 

    temperature between the lower category temperature 

    and the rated temperature.

7. 类别电压 Category voltage: 

    電容器在其上限溫度下可連續施加在電容器上的最大電壓。 

    The maximum voltage which may be applied continuously

    to a capacitor at its upper category temperature. 

8. 温度降额电压 Temperature derating voltage: 

    对于额定温度和上限类别温度之间的任一温度，降温电压是

    可以连续施加到电容器上的最大电压。

    For any temperature between the rated temperature and

    the upper category temperature, the temperature 

    derating voltage is the maximum voltage that may be 

    applied continuously to a capacitor. 

  9. 绝缘电阻（IR）/时间常数（t)

      Insulation resistance (lR)/time constant: 

      绝缘电阻是电容器充电一分钟后所加的直流电压和流经电容

      器的漏电流值的比值。 单位“MΩ”。 时间常数为绝缘电阻和

      电容量的乘积，通常以秒表示，公式如下：

      t (s)=lR (MΩ)×CR (μF).

      The insulation resistance is the ratio between an applied 

      DC voltage and the resulting leakage current after a 

      minute of charge. It is expressed in MΩ. The time 

      constant is expressed in seconds with the following 

      formula: 

       t (s)=lR (MΩ)×CR (μF).

  10. 脉冲上升时间 Pulse rise time (dv/dt): 

      脉冲上升时间决定了电容器承受快速电压变化引起的大电流

      峰值的能力。 峰值电流定义公式如下：

      lp(A)=C(uF) × dv/dt ( V/μs) 

      The pulse rise time defines the capability of a capacitor to 

      withstand high current peaks due to fast voltage changes. 

      The peak current is defined by the following formula: 

      lp(A)=C(uF) × dv/dt ( V/μs) 

  11. 损耗角正切及等效串联电阻

      Dissipation factor and equivalent series resistance: 

      耗散因数或损耗角正切(tanδ) 是指电容器在规定频率的正弦

      电压作用下，电容器损耗的功率除以电容器的无功功率。 

      等效串联电阻(ESR)是由电容串联电阻和电感组成的等效

      电路。

      The dissipation factor or tangent of loss angle (tanδ) is the 

      power loss of the capacitor divided by the reactive power of 

      the capacitor at a sinusoidal voltage of specified frequency. 

      The equivalent series resistance(ESR) is the resistive part 

      of the equivalent circuit composed of capacitance, series 

      resistance and inductance.