BS 9200:1972

Co-operating organizations
Foreword
Specification
1 Principles and mandatory procedures
1.1 General matters
1.1.1 Scope
1.1.2 Related documents
1.1.3 Terminology
1.1.4 Letter symbols, signs and abbreviations
1.1.5 Graphical symbols
1.1.6 Marking of the component and package
1.1.7 Eligibility for qualification approval
1.1.8 Structurally similar components
1.1.9 Delayed delivery
1.1.10 Supplementary procedure for qualification
          approval
1.1.11 Certified test records
1.1.12 Standard ratings and characteristics
1.1.12.1 Switching rate
1.1.12.2 Duty
1.1.12.3 Open circuit voltage across contacts
1.1.12.4 Current rating
1.1.12.5 Load rating
1.1.12.6 Number of operations
1.1.12.7 Environmental category
1.1.12.8 Preferred environmental severities
1.1.13 Unchecked parameters
1.1.14 Procedure to be followed in the event of
          failures at Group C or Group D inspection
1.1.14.1 Endurance tests
1.1.14.2 Damp heat tests
1.1.15 Ordering information
1.1.16 Release prior to completion of Group B tests
1.2 Test procedures
1.2.1 Measurement conditions
1.2.2 Visual inspection
1.2.3 Dimensioning and gauging procedures
1.2.3.1 Outline dimensions
1.2.3.2 Weight
1.2.4 Electrical test procedures
1.2.5 Mechanical test procedures
1.2.6 Environmental test procedures
1.2.6.1 Robustness of terminations
1.2.6.2 Soldering (solderability and resistance to
          soldering heat)
1.2.6.3 Climatic sequence
1.2.6.4 Damp heat, steady state
1.2.6.5 Rapid change of temperature
1.2.6.6 Salt mist
1.2.6.7 Bump
1.2.6.8 Vibration
1.2.6.9 Sealing
1.2.7 Endurance test procedures
1.2.7.1 Electrical endurance
2 Rules for the preparation of detail
          specifications
2.1 Basic information
2.1.1 Originator of the detail specification
2.1.2 The number of the detail specification
2.1.3 Description of the component and intended
          application
2.1.4 Outline drawing
2.1.5 Ratings (including limiting conditions of use)
2.1.6 Characteristics
2.1.7 Related documents
2.1.8 Additional information (not for inspection
          purposes)
2.1.9 Instructions for ordering components
2.2 Inspection requirements
2.3 Certified test records
Appendices
A Principles to be observed in the preparation
          of detail specifications when calling up
          related specifications
B Standard test coils for reed contact units
C Example of the layout of a detail
          specification
D Example of a certified test record
Table
1 Inspection requirements for the general
          application category

Covers the general requirements for reed contact units of assessed quality and includes the rules for the preparation of detail specifications. Details only tests using a standard coil and resistive contact loads as they are more definitive than tests which rely on induction from a magnet.