标准电阻E系列值

The resistor’s values which are provided to them fall within a category of standard or preferred resistor values.

通过：S. Prakash

在标准电阻类别内的值依次是对数的，并且与组件的准确性相对应。

这使得能够在标准电阻类别内存在的值待置于组件上存在的公差。

可以在标准电阻器类别内应用这些值，也可以为其他电阻器，组件和电容器进行。

由于不能精确地完成包括电阻器的值的组分值的制造，因此特定的公差值与每个电阻器相关联。

The typical tolerance values associated with the resistors can be ±5%, ±10%, and ±20%. Apart from these tolerance values, there is availability of the tolerance value of ±2% as well.

A list has been made consisting of the standard resistor values and the preferred values in order to ensure and enable the selection of the standard values from the available set of manufacturers.

Thus, this enable the manufacturing of the resistors to be an easy process along with the reduction of the inventory of the manufacturers for the stock holdings by having and following only the range of resistor values which come under the preferred range.

由于需要高精度的特殊值，这一领域已经获得了很多吸引力。

标准电阻值及其E系列

电阻器用于空间和将公共电阻值与其各自的公差水平相对应地放置e-序列。

The E-series used is the series for the preferred or standard values. The resistors are placed in such a manner that the spacing is done in order to avoid the overlapping of the tolerance band’s bottom and one value of the tolerance band with the next band and value of the tolerance band.

例如，在电阻器为1欧姆值和±20％的容差水平的情况下;如果组件的实际电阻放置在容差带的顶部，则电阻器将具有1.2欧姆值。

In another example, where a resistor of 1.5 Ohm value and ±20% tolerance level; the resistor will have 1.2 Ohms value of the tolerance band at the bottom if the component’s actual resistor is placed at the tolerance band’s top.

Thus, one can build a series through the calculation of the values for a wide range in the manner elaborated in the above two examples. This calculation and building of series is done at the interval of every ten years.

通过上述过程产生的电阻器的标准值的系列称为E系列，并且所知的值被称为优选值。

其中最基本的系列之一是E系列范围内的E3系列，包括三个值，即4.7,1.0和2.2。

由于公差与电阻有关is very wide, the frequency with which this is used for the current day applications is very less. But the basic values of the resistor are used widely in order to reduce their stock holding.

E系列范围内的其他系列是E6系列，其值在每十年的间隔下计算，并且由六个值组成±20％的公差水平。

The other series within the range of the E-series are the E12 and E24 series whose values are calculated at the interval of every ten years and consists of twelve and twenty-four values for a tolerance level of ±10% and ±5% respectively.

其他系列，例如E96和E48系列在电子系列范围内也可用，但它们并不是很常见。

在大多数电阻器中，有E12和E6系列的可用性。但是，由于其公差系列非常接近，因此这对于E24SERIE来说是真的，因此E24Series主要发现在公差水平非常高的电阻器中。

因此，在当前通常使用E24Series通常使用的电阻器包括金属氧化物膜电阻器以及其他类型。

The E24 series is rarely used for the carbon type resistors, the availability of which is again scarce. This is because the carbon type resistors have tolerance ranges at very low level since there is no guarantee of their values to a tolerance level which is so close.

The standard and preferred resistor ranges of the E-series are used in a wide range and thus have been adopted by various different manufacturing organizations as a standard.

For example, the preferred values of the E series have been adopted by the North American organization, “Electrical Industries Association (EIA)”.

各种其他组件的标准和优选值

用于标准组件值采用的电阻器的系统非常有效地工作。

This can be equally applied for the resistor’s other components. Another way which is applicable consists of the concept of the values enlisted in the standard list to be used and which in turn are determined by the component’s tolerance levels.

电容器还使用E系列的优选值，该优选值包括诸如-e3的系列，这是较低的顺序。

具有低容差级别的电容器使用E6系列E系列。电解电容器的公差水平在范围内非常宽。

On the other hand, the tolerance levels of the ceramic capacitors are very high, higher than that of the electrolytic capacitors and thereby they can use the values of the E24 and E12 series as well.

例如，诸如齐纳二极管的组件还遵循EIA的E系列EIA的优选值，用于其击穿电压。

The standard voltage of the Zener diodes conforms to the voltage values of the E24 and E12 series. This is especially true for the level of 5 volts where Zener diode is of the value of 5.1 Volts.