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 an amendment to the European detail specification for fixed low power film SMD resistors with a rectangular shape, covering stability classes 1 and 2. Published by the European Committee for Electrotechnical Standardization (CENELEC), this 2017 update refines ordering information and product classification to clearly distinguish between standard lead-free termination plated resistors and special lead-bearing termination plated variants. It ensures coherence with international practices for solderability and product testing, supporting manufacturers, designers, and suppliers in the electronics industry.

Key Topics

• Product Types: The standard defines two permissible variants:

  • Standard products with lead-free termination plating (typically pure tin).
  • Special products with lead-bearing termination plating (SnPb alloy with at least 3% lead).

• Ordering Information Enhancements:

  • Introduction of a new suffix “B” in ordering codes to designate special lead-bearing terminations.
  • Ordering details now include assessment level, style, temperature coefficient, resistance value, tolerance, failure rate, and plating type.

• Testing and Compliance:

  • Clarification of testing procedures to differentiate between lead-free and lead-bearing termination products.
  • Solderability tests require standard products to be evaluated with both lead-free (SnCu, SnCuNi, SnAg, SnAgCu) and traditional SnPb solder.
  • Special products are tested exclusively with traditional SnPb solder.
  • Revised test conditions and schedules for both product types ensure reliability and consistent performance.

• Soldering Compatibility:

  • Standard lead-free plated resistors guarantee full compatibility with both lead-free and conventional soldering methods.
  • Special lead-bearing plated resistors are compatible only with traditional SnPb solder.

• Amendment Purpose:

  • To address proper discrimination between product variants in ordering and testing.
  • To update documentation in line with industry trends toward lead-free technology while maintaining legacy product options.

Applications

EN 140401-802:2007/A3:2017 is vital for electronic component manufacturers, quality assurance teams, and procurement specialists involved with surface-mount devices (SMD) resistors. Its applications include:

• Designing and specifying electronic circuits requiring precise low power fixed film resistors with predictable stability and tolerance.
• Ensuring compliant procurement of SMD resistors with appropriate termination plating based on customer soldering needs.
• Guiding quality control and testing laboratories in performing standardized solderability and reliability tests under regulated conditions.
• Supporting regulatory compliance related to lead content in components for markets demanding RoHS and other environmental directives.
• Enhancing electronic assembly processes by specifying resistor terminations that align with solder materials and techniques used in manufacturing.

Related Standards

• EN 60115-1: This standard is referenced for failure rate levels (e.g., E0, E6) and for certain periodic electrical overload tests.
• EN 60062: Defines temperature coefficient codes and resistance value coding (RKMG system) used in ordering information.
• RoHS Directive and Lead-Free Solder Standards: Although not explicitly mentioned, the amendment aligns with regulations on lead-free electronics manufacturing.
• CEN/CENELEC Internal Regulations: Govern adoption and national implementation of amendments within member countries.

---

The amendment EN 140401-802:2007/A3:2017 effectively modernizes the specification for fixed low power film SMD resistors by clarifying plating options, updating test requirements, and refining ordering codes. This facilitates seamless integration of lead-free technology without excluding traditional lead-bearing product variants-ensuring broad applicability and compliance across European electrotechnical markets and beyond.

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
...