BS CECC 41200:1979

Foreword
Preface
Section 1 - Scope
Section 2 - Preferred characteristics, ratings and
            severities for environmental 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, or output ratio
2.1.4 Limits for insulation resistance
2.2 Ratings
2.2.1 Rated resistance
2.2.2 Tolerance on rated resistance
2.2.3 Rated dissipation
2.2.4 Limiting element voltage
2.2.5 Isolation voltage
2.3 Severities for environmental tests
2.3.1 Drying
2.3.2 Vibration
2.3.3 Bump
2.3.4 Shock
2.3.5 Low air pressure
2.3.6 Change of temperature
2.3.7 Soldering
2.4 Derating curve
2.5 Information to be given in a detail
        specification
2.5.1 Style
2.5.2 Rated dissipation
2.5.3 Limiting element voltage
2.5.4 Isolation voltage
2.5.5 Resistance law
2.5.6 Dimensions
2.5.7 Resistance range
2.5.8 Tolerances on rated resistance
2.5.9 Climatic category
2.5.10 Vibration severity
2.5.11 Bump severity
2.5.12 Shock severity
2.5.13 Low air pressure severity
2.5.14 Soldering
2.5.15 Limits of resistance change after 1 000 h
        electrical endurance test
2.5.16 Starting torque
2.5.17 Limiting slider current
2.5.18 Terminal resistance and, where applicable,
        residual resistance and minimum effective
        resistance
2.5.19 Derating curve
2.5.20 Marking
2.5.21 Ordering information
2.5.22 Additional information
Section 3 - Inspection
3.1 Formation of inspection lots
3.2 Delayed delivery
3.3 Test methods
3.4 Qualification approval

Preferred values for characteristics and ratings. Inspection requirements for potentiometers having a rated dissipation in excess of 10 W.