SIST EN 140401-804:2011/A1:2014

• Abstract:

  Various parameters of this component are precisely specified in this specification. Unspecified parameters may vary from one component to another. The following combinations of temperature coefficient, tolerance on rated resistance shall be used for qualification approval according to 2.2.1 and quality conformance inspection according to 2.3. Resistance values of E-series according to IEC 60063 shall be used. The qualification of resistance values below or beyond the specified resistance values is permitted, if they fulfill the requirements of the closest stability class.

• Status: Published
• Publication Date: 08-Dec-2013
• ICS: 31.040.10 - Fixed resistors
• Technical Committee: I11 - Imaginarni 11
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 05-Dec-2013
• Due Date: 09-Feb-2014
• Completion Date: 09-Dec-2013
• Ref Project: EN 140401-804:2011/A1:2013 - Detail Specification: Fixed low power film high stability SMD resistors - Rectangular - Stability classes 0,1; 0,25

• Amends: SIST EN 140401-804:2011 - Detail Specification: Fixed low power film high stability SMD resistors - Rectangular - Stability classes 0,1; 0,25
• Effective Date: 12-Feb-2013

Overview

SIST EN 140401-804:2011/A1:2014 is a CENELEC (CLC) amendment that details requirements for fixed, low power, high stability film SMD resistors in rectangular form, specifically for stability classes 0.1 and 0.25. This European Standard provides specifications for surface-mounted device (SMD) resistors that are crucial in modern electronic assemblies requiring low tolerance and high reliability components. The amendment updates certain dimensions, naming conventions, and code systems to reflect industry best practices and facilitate international order processing.

Key Topics

• Scope and Classification: Focuses on rectangular SMD resistors of low power and high stability, categorized into stability classes 0.1 and 0.25, which relate to the maximum expected change in resistance over time and use.
• Dimensional Specifications: Defines updated style codes (e.g., RR1005M, RR1608M, etc.), dimensions, and mass for several common resistor package sizes, enhancing compatibility across manufacturers.
• Stability Classes: Stability classes 0.1 and 0.25 offer guidance on selecting resistors for applications where minimal value drift is essential for circuit performance.
• Ordering and Coding System: Introduces the RKMG code system, which standardizes resistance value representation for ordering, using SI prefixes (R, K, M, G) in uppercase and eliminating spaces for efficient electronic processing.
• Nomenclature Updates: Harmonizes resistor style codes to improve supply chain clarity and support unambiguous communication in procurement and logistics.
• International Applicability: Provides uniform requirements and terminology, promoting integration and acceptance across European and global markets.

Applications

SIST EN 140401-804:2011/A1:2014 is highly relevant for engineers, procurement specialists, and electronics manufacturers who design, order, and assemble:

• Consumer Electronics: Used in high reliability applications such as smartphones, tablets, and wearable devices that demand precise, stable resistor values for signal integrity and power management.
• Industrial Controls: Suitable for automated systems, instrumentation, and control units, where long-term stability, reliability, and space-saving SMD designs are essential.
• Automotive Electronics: Applied in vehicle control modules and sensor circuits, where consistent resistor performance is critical under fluctuating environmental conditions.
• Telecommunications: Used in networking equipment, base stations, and signal processing devices that require high stability resistors with minimal deviation over time.
• Medical Devices: Ensures safety and accuracy in portable medical electronics, diagnostic tools, and monitoring equipment.

By standardizing these component specifications, the standard reduces the risk of incompatibility and manufacturing errors, ensuring components perform as expected throughout their lifecycle.

Related Standards

• EN 140401-804:2011: The base specification for fixed low power film high stability SMD resistors, upon which this amendment builds.
• EN 60062: Establishes the coding system for resistor values, referenced within this standard as the foundation for the RKMG code system.
• IEC 60115 Series: International standards series for fixed resistors, often referenced for testing and performance requirements.
• IEC 61340-5-1: Standard for electrostatics and protection of electronic devices from electrostatic discharge, relevant for SMD resistor handling and assembly environments.

Incorporating SIST EN 140401-804:2011/A1:2014 into electronics manufacturing and procurement improves quality assurance, facilitates global trade, and ensures regulatory compliance, making it essential for organizations committed to advanced, reliable electronic system design.

SLOVENSKI STANDARD
01-januar-2014
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Detail Specification: Fixed low power film high stability SMD resistors - Rectangular -
Stability classes 0,1; 0,25
Bauartspezifikation: SMD Schicht-Festwiderstände niedriger Belastbarkeit mit hoher
Stabilität - Rechteckig - Stabilitätsklassen 0,1; 0,25
Spécification particulière: Résistances fixes à couche de haute stabilité et à faible
dissipation CMS - Rectangulaires - Catégories de stabilité 0,1; 0,25
Ta slovenski standard je istoveten z: EN 140401-804:2011/A1:2013
ICS:
31.040.10 Fiksni upor Fixed resistors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 140401-804/A1
NORME EUROPÉENNE
November 2013
EUROPÄISCHE NORM
ICS 31.040.10
English version
Detail Specification: Fixed low power film high stability SMD resistors -
Rectangular -
Stability classes 0,1; 0,25
Spécification particulière: Résistances Bauartspezifikation: SMD Schicht-
fixes à couche de haute stabilité et à Festwiderstände niedriger Belastbarkeit
faible dissipation CMS - mit hoher Stabilität -
Rectangulaires - Rechteckig -
Catégories de stabilité 0,1; 0,25 Stabilitätsklassen 0,1; 0,25

This amendment A1 modifies the European Standard EN 140401-804:2011; it was approved by CENELEC on
2013-10-14. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which
stipulate the conditions for giving this amendment the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the CEN-CENELEC Management Centre or to any CENELEC member.

This amendment exists in three official versions (English, French, German). A version in any other language
made by translation under the responsibility of a CENELEC member into its own language and notified to the
CEN-CENELEC Management Centre has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus,
the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany,
Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 140401-804:2011/A1:2013 E

Contents Page
Foreword . 3
1 Modification to 1.1 .
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