EN 140401-802:2007/A3:2017

Detail specification: Fixed low power film SMD resistors - Rectangular - Stability classes 1; 2

Amendment of the detail specification, aiming to amend the ordering information for a proper discrimination between two different permissible product variants.

Bauartspezifikation: SMD Schicht-Festwiderstände niedriger Belastbarkeit - Rechteckig - Stabilitätsklassen 1; 2

Spécification particulière: Résistances couche fixes à faible dissipation CMS - Rectangulaires - Classes de stabilité 1; 2

Podrobna specifikacija: Fiksni folijski upori majhnih moči za površinsko montažo - Pravokotni - Razreda stabilnosti 1; 2 - Dopolnilo A3

General Information

• Status: Published
• Publication Date: 16-Mar-2017
• Withdrawal Date: 22-Jan-2020
• ICS: 31.040.10 - Fixed resistors
• Technical Committee: CLC/TC 40XB - CLC/TC 40XB
• Drafting Committee: CLC/TC 40XB - CLC/TC 40XB
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 17-Mar-2017
• Due Date: 02-Dec-2017
• Completion Date: 17-Mar-2017
• Ref Project: SIST EN 140401-802:2008/A3:2017 - Detail specification: Fixed low power film SMD resistors - Rectangular - Stability classes 1; 2

Relations

• Amends: EN 140401-802:2007 - Detail specification: Fixed low power film SMD resistors - Rectangular - Stability classes 1; 2
• Effective Date: 10-Nov-2015

Overview

EN 140401-802:2007/A3:2017 is a European standard developed by CLC/TC/40XB covering fixed low power film SMD resistors in rectangular form and stability classes 1 and 2. This amendment specifically addresses modifications to the detail specification for these surface mount device (SMD) resistors, focusing on the critical issue of ordering information to ensure clear differentiation between standard products with lead-free termination plating and special products with lead-bearing SnPb terminations.

By providing explicit ordering instructions and updated technical references, this amendment aids manufacturers, distributors, and end-users in accurately specifying and procuring the desired resistor variant, contributing to quality control, compliance, and compatibility in electronics assembly.

Key Topics

• Product Variant Discrimination:
  Clarifies ordering information to enable easy distinction between lead-free and lead-bearing versions of fixed low power film SMD resistors.

• Termination Plating Types:

  • Lead-free Termination (standard): Typically pure tin, compatible with lead-free and conventional SnPb solders.
  • Lead-bearing Termination (special): SnPb composition, lead content not less than 3%, intended for use with conventional SnPb solder only.

• Updates in Test and Application Requirements:

  • Revised solderability testing protocols:
    • Lead-free terminations tested with both lead-free and conventional solders.
    • Lead-bearing terminations tested only with conventional SnPb solder.
  • Adjusted documentation and annexes reflecting current soldering practices.

• Ordering Information:

  • Introduction and clarification of product codes and suffixes to specify product variant (e.g., "B" suffix for lead-bearing).
  • Clear schema for codifying resistor attributes: specification number, assessment level, style, temperature coefficient, resistance, tolerance, failure rate, termination type, and packaging.

Applications

EN 140401-802:2007/A3:2017 applies to the procurement, quality assurance, and assembly of fixed low power film SMD resistors in:

• Electronics Manufacturing:
  Ensures reliable sourcing of resistors with the required termination type for compatibility with specified soldering processes, supporting both RoHS-compliant (lead-free) production lines and legacy processes requiring SnPb termination.
• Component Selection and Quality Control:
  Aids design engineers and quality managers in verifying that resistors supplied meet assembly requirements, reducing the risk of installation errors and compliance issues.
• Supply Chain and Logistics:
  Provides distributors and suppliers with standardized codes for accurate order processing, inventory management, and regulatory traceability across diverse European and international markets.

Related Standards

• EN 60115-1:
  General requirements for fixed resistors in electronic equipment, including failure rate levels referenced in ordering codes.
• EN 60062:
  Coding system for resistor and capacitor values, temperature coefficients, and tolerances.
• RoHS Directive:
  Regulatory context for lead-free terminations and the ongoing industry transition to lead-free solders.

Practical Value

Implementing EN 140401-802:2007/A3:2017 amendment ensures that manufacturers and users can:

• Effortlessly identify and specify the correct SMD resistor variant for their needs.
• Align procurement processes with international compliance requirements.
• Maintain product reliability and solder joint quality in both new and legacy electronic assemblies.

Adoption of this standard streamlines the component selection process and underpins the quality and compatibility critical to modern electronics manufacturing.

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2017
3RGUREQDVSHFLILNDFLMD)LNVQLIROLMVNLXSRULPDMKQLKPRþL]DSRYUãLQVNRPRQWDåR
3UDYRNRWQL5D]UHGDVWDELOQRVWL'RSROQLOR$
Detail specification: Fixed low power film SMD resistors - Rectangular - Stability classes
1; 2
Bauartspezifikation: SMD Schicht-Festwiderstände niedriger Belastbarkeit - Rechteckig -
Stabilitätsklassen 1; 2
Spécification particulière: Résistances couche fixes à faible dissipation CMS -
Rectangulaires - Classes de stabilité 1; 2
Ta slovenski standard je istoveten z: EN 140401-802:2007/A3:2017
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 140401-802:2007/A3

NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2017
ICS 31.040.10
English Version
Detail specification: Fixed low power film SMD resistors -
Rectangular - Stability classes 1; 2
Spécification particulière: Résistances couche fixes à faible Bauartspezifikation: SMD Schicht-Festwiderstände
dissipation CMS - Rectangulaires - Classes de stabilité 1; 2 niedriger Belastbarkeit - Rechteckig - Stabilitätsklassen 1; 2
This amendment A3 modifies the European Standard EN 140401-802:2007; it was approved by CENELEC on 2017-01-23. 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, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.

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
© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 140401-802:2007/A3:2017 E

Contents Page
European foreword . 3
1 Modification to 1.1 . 4
2 Modification to 1.6 . 4
3 Modification to 1.8.1 . 4
4 Modification to 1.9.4 . 4
5 Modification to 1.10.3 . 5
6 Modification to Annex A . 5

European foreword
This document (EN 140401-802:2007/A3:2017) has been prepared by CLC/TC/40XB "Resistors".
The following dates are fixed:
• latest date by which this document has (dop) 2018-01-23
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2020-01-23
standards conflicting with this
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CENELEC [and/or CEN] shal
...