IEC 60062 PDF

IEC Edition INTERNATIONAL. STANDARD. NORME. INTERNATIONALE. Marking codes for resistors and capacitors. Codes de marquage. Fifth edition. Marking codes for resistors and capacitors. Reference number. IEC (E). This is a free 5 page sample. Access the full. IEC MARKING CODES FOR RESISTORS AND CAPACITORS.

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The introduction of the letter L in more recent issues of the standard instead of an SI prefix m for milli is justified to maintain the rule of only using uppercase letters for resistances the otherwise resulting M was already in use for mega.

However, the letter E is conflictive with the similar looking but incompatible E notation in engineering, and it may therefore cause considerable confusion as well.

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This is not only for brevity for example when printed on the part or PCBbut also to circumvent the problem that decimal separators tend to “disappear” when photocopying printed circuit diagrams.

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Additional zeros imply tighter tolerance, for example 15M0. The RKM code[1] also referred to as “letter and digit code for resistance and capacitance values and tolerances” or “R notation”, is a notation to specify resistor and capacitor values defined in the international standard IEC formerly IEC 62 since When the value can be expressed without the need for a prefix, an “R” is used instead of the decimal separator.

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Date codes for and are obviously wrong. This method avoids overlooking the decimal separatorwhich ie not be rendered reliably on components iiec when duplicating documents.

K k [nb 4]. From Wikipedia, the free encyclopedia.

For brevity, the notation omits to always specify the unit ohm or farad explicitly and instead relies on implicit knowledge raised from the usage of specific letters either only for resistors or for capacitors, [nb 1] the case used uppercase letters are typically used for resistors, lowercase letters for capacitors[nb 2] a part’s appearance, and the context.

Oec notation also avoids using a decimal separator and replaces it by a letter associated with the prefix symbol for the particular value. Similar, the standard prescribes the following lowercase letters for capacitances to be used instead of the decimal point: This page was last edited on 21 Augustat Today, a lowercase letter m should be used for capacitances iiec possible to avoid confusion. You can help by adding to it.

For example, 8K2 indicates a resistor value of 8. CS1 German-language sources de Interlanguage link template link number CS1 Russian-language sources ru Articles to be expanded from December All articles to be expanded Articles with empty sections from December All articles with empty sections Articles using small message boxes.

RKM code – Wikipedia

Retrieved from ” https: The significantly updated IEC The code letters are loosely related to the corresponding SI prefixbut there are several exceptions, where the capitalization differs or alternative letters are used. Archived PDF from the original on Archived from the original on The letters p and n weren’t part of the first issue of the standard, but were added after the adoption of the corresponding SI prefixes. The standards also define ieec color code for fixed resistors.

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For example, 1R2 indicates 1. R E [nb 3]. By using this site, you agree to the Terms of Use and Privacy Policy.

List of International Electrotechnical Commission standards. This section is empty. It stems from the fact, that R is used in symbolic names for resistors as well, and it is also used in a similar fashion but with incompatible meaning in other part marking codes.

It 06062 therefore cause confusion in some contexts. The letters G and T weren’t part of the first issue of the 600062, which pre-dates the introduction of the SI system hence the name “RKM code”but were added after the 600062 of the corresponding SI prefixes.

Originally meant also as part marking codethis shorthand notation is widely used in electrical engineering to denote the values of resistors and capacitors in circuit diagrams and in the production of electronic circuits for example in bills of material and in silk screens.

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