EN 140210 : 1994 AC 1994

Foreword
Section 1 - General
  1.1 Scope
  1.2 Related documents
  1.3 Information to be prescribed in detailed
       specifications
       1.3.1 Outline drawings and dimensions
       1.3.2 Mounting
       1.3.3 Marking
       1.3.4 Ordering information
       1.3.5 Additional information (not for inspection
              purposes)
  1.4 Units, symbols and terminology
  1.5 Marking of component and package
Section 2 - Preferred ratings and characteristics
  2.1 Preferred climatic categories
  2.2 Preferred values of ratings
       2.2.1 Rated resistance
       2.2.2 Tolerance on rated resistance
       2.2.3 Rated dissipation
       2.2.4 Limiting element voltage
  2.3 Preferred values of characteristics
       2.3.1 Temperature coefficient of resistance
       2.3.2 Limits for change in resistance
Section 3 - Quality assessment procedures
  3.1 Eligibility for capability approval
  3.2 Primary stage of manufacture
  3.3 Structural similar components
  3.4 Procedures for capability approval
       3.4.1 General
       3.4.2 Application of capability of approval
       3.4.3 Granting of capability approval
  3.5 Capability manual
  3.6 Capability qualifying components (CQCs)
       3.6.1 CQCs for process quality control
       3.6.2 CQCs for demonstrating limits of capability
  3.7 Inspection requirements of CQCs
  3.8 Programme for capability approval
  3.9 Capability approval test report
  3.10 Abstract of description of capability
  3.11 Modification likely to affect the capability
       approval
  3.12 Initial capability approval
       3.12.1 Procedure in the event of failure
       3.12.2 General plan for the selection of CQCs
       3.12.3 Process control test plans
              3.12.3.1 Winding element - visual and dimensional
              3.12.3.2 Element/termination connections - visual
                        examination
              3.12.3.3 Coating application - visual examination
              3.12.3.4 Temperature profile of oven or kiln
              3.12.3.5 Lead preparation and soldering - visual
                        examination
              3.12.3.6 Termination completion - visual examination
              3.12.3.7 Bulk metal element fabrication - visual
                        examination
              3.12.3.8 Moisture content of ceramic powders
              3.12.3.9 Visual examination after pressing
              3.12.3.10 Visual examination after metallizing
              3.12.3.11 Batch release for finding after 100%
                        resistance measurement
              3.12.3.12 Marking
              3.12.3.13 100% resistance test
              3.12.3.14 Visual examination after packaging
       3.12.4 Test plans for CQCs demonstrating limits of
              capability
              3.12.4.1 Range of case sizes
              3.12.4.2 Range of terminations
              3.12.4.3 Minimum, maximum and critical resistance
                        in smallest and largest case size
              3.12.4.4 Numbers of resistor sections per case
                        size (n[s])
              3.12.4.5 Rated dissipation and case size
              3.12.4.6 Dissipation at upper category temperature
              3.12.4.7 Limiting element voltage for smallest and
                        largest case size
              3.12.4.8 Overload
              3.12.4.9 Isolation voltage
              3.12.4.10 Temperature characteristic of resistance
              3.12.4.11 Climatic category
              3.12.4.12 Rated temperature
              3.12.4.13 Vibration severity
              3.12.4.14 Bump or shock severity
              3.12.4.15 Low air pressure severity
              3.12.4.16 Reactance
              3.12.4.17 Robustness of the resistor body
  3.13 Maintenance of capability approval
  3.14 Extension of capability approval
  3.15 Quality conformance inspection
  3.16 Screening procedures
  3.17 Delayed delivery
Section 4 - Test and measurement procedures
Annex A Example of an abstract description of capability
        for inclusion in CECC 00 200
Annex B Layout of the front page of a CQC specification
Annex C Requirements for capability approval test report
Annex D Requirements for the form and content of a
        capability manual
Figures
Tables

Gives preferred ratings and characteristics of fixed power resistors with related dissipation not less than 2 W, primarily meant for applications in electronic equipment. Also selects the appropriate capability approval procedures.