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：

电容器在其上限温度下可连续施加在电容上的最大电压。

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 (IR) / Time constant (t):

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 (tan δ) 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.