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1. 額定容量 Rated capacitance:

電容器容量的設(shè)計(jì)值，通常在電容器上顯示。

The capacitance value for which the capacitor has been

designed and which is usually indicated upon it.

2. 類別溫度范圍 Category temperature range:

電容器設(shè)計(jì)連續(xù)工作溫度的范圍，是由類別溫度所定的。

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. 上限類別溫度 Upper category temperature:

電容器連續(xù)工作下最高的環(huán)境溫度。

The maximum ambient temperature for which a capacitor has been designed to operate continuously.

4. 下限類別溫度 Lower category temperature:

電容器連續(xù)工作下最低的環(huán)境溫度。

The minimum ambient temperature for which a capacitor has  been designed to operate continuously.

5. 額定溫度 Rated temperature：

可連續(xù)施加額定電壓的最大環(huán)境溫度。

The maximum ambient temperature at which rated voltage may be continuously applied.

6. 額定電壓 Rated voltage:

最大的直流電壓或最大有效值交流電壓或脈沖電壓的峰值，可在下限類別溫度與額定溫度之間任一溫度下連續(xù)載入于電容器的電壓。

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. 類別電壓 Category voltage：

電容器在其上限溫度下可連續(xù)施加在電容上的最大電壓。

The maximum voltage which may be applied continuously to a capacitor  at its upper category temperature.

8. 溫度降額電壓 Temperature derating voltage：

對于額定溫度和上限類別溫度之間的任一溫度，降溫電壓是可以連續(xù)施加到電容器上的最大電壓。

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. 絕緣電阻（IR) / 時(shí)間常數(shù) (t) Insulation resistance (IR) / Time constant (t):

絕緣電阻是電容器充電一分鐘后所加的直流電壓和流經(jīng)電容器的漏電流值的比值。 單位“MΩ”。 時(shí)間常數(shù)為絕緣電阻和電容量的乘積，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. 脈沖上升時(shí)間 Pulse rise time (dv/dt):

脈沖上升時(shí)間決定了電容器承受快速電壓變化引起的大電流峰值的能力。 峰值電流定義公式如下：

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. 損耗角正切及等效串聯(lián)電阻 Dissipation factor and equivalent series resistance:

耗散因數(shù)或損耗角正切(tanδ) 是指電容器在規(guī)定頻率的正弦電壓作用下，電容器損耗的功率除以電容器的無功功率。 等效串聯(lián)電阻(ESR)是由電容串聯(lián)電阻和電感組成的等效電路。

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.