IEC 60063 PDF


The E series is a system of preferred numbers (also called preferred values) derived for use in IEC release history: IEC (aka IEC ). IEC Preferred Number Series for Resistors and Capacitors. Find the most up-to-date version of IEC at Engineering

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E series of preferred numbers

As transistor radio production migrated towards Japan during the s, it was critical for the electronic industry to have international standards. Over time, components evolved towards common values, then based on some of these existing conventions, the International Electrotechnical Commission IEC began work on an international standard in In other projects Wikimedia Commons. In the early 20th centurycapacitor previously called condenser [1] [2] and resistor [3] [4] value increments were different than today.

The two main differences between each major group is the number of significant digits 2 digits for E3 to E24, 3 digits for E48 to E and different rounding rules.


E series of preferred numbers – Wikipedia

Views Read Edit View history. Archived PDF from the original on This allows easier purchasing migration between different tolerance parts.

World War II military production was a major influence for establishing common standards across many industries. Retrieved from ” https: This page was last edited on 1 Novemberat It should be noted that some values in the E24 series don’t exist in E48 to E series.

Other types of electrical components are either specified by the Renard series for example fuses or are defined in relevant product standards for example IEC for wires.

The E3 series is defined as a series of the numbers 1. Currently, most electrolytic capacitors are manufactured with values in the E6 or E12 series, thus E3 series kec likely obsolete.

List of International Electrotechnical Commission standards. Also, the E series is used for 0. Later, the post—World War II baby boom and the invention of the transistor kicked off demand for consumer electronics goods during the s.


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From Wikipedia, the free encyclopedia. If a manufacturer sold resistors with E3 series values in a range of 1 ohm to 10 megohms, then the available resistance values would be: Wikimedia Commons has media related to E12 values.

It consists of the E3E6E12E24E48E96 and E series, where the number after the ‘E’ designates the quantity 60036 value “steps” in each series.

Archived from the original on Commons category link is on Wikidata Commons category link is on Wikidata using P