BS CECC 40300:1981

Foreword
Preface
Section 1 - Scope
Section 2 - Preferred characteristics, ratings and
            severities for environmental and overload
            tests
2.1 Characteristics
2.1.1 Climatic severities
2.1.2 Temperature characteristics and temperature
       coefficients of resistance
2.1.3 Limits for change in resistance
2.1.4 Limits for insulation resistance
2.2 Ratings
2.2.1 Rated resistance
2.2.2 Tolerances on rated resistance
2.2.3 Rated dissipation
2.2.4 Limiting element voltage
2.3 Severities for environmental and overload tests
2.3.1 Drying
2.3.2 Vibration
2.3.3 Low air pressure
2.3.4 Overload
2.4 Derating curve
2.5 Information to be given in detail specifications
2.5.1 Style
2.5.2 Rated dissipation
2.5.3 Limiting element voltage
2.5.4 Isolation voltage
2.5.5 Dimensions
2.5.6 Resistance range
2.5.7 Tolerances on rated resistance
2.5.8 Climatic category
2.5.9 Vibration severity
2.5.10 Low air pressure severity
2.5.11 Limits of resistance change after 1 000 h
       endurance test
2.5.12 Temperature characteristic of resistance
2.5.13 Derating curve
2.5.14 Marking
2.5.15 Ordering information
2.5.16 Additional information (not for inspection purposes)
Section 3 - Inspection
3.1 Formation of Inspection lots
3.2 Test methods
3.3 Qualification approval
Appendix 'A' - Fixed sample size Qualification Approval
              test schedule for fixed precision resistors

Prescribes preferred ratings, characteristics, test severities and inspection requirements for use in detail specification for this type of resistor.