BS 9760:1977

Foreword
Cooperating organizations
Specification
Section one. Principles and mandatory procedures
1.1 General matters
1.1.1 Scope
1.1.2 Related specifications and documents
1.1.3 Terminology
1.1.4 Letter symbols, signs and abbreviations
1.1.5 Graphical symbols
1.1.6 Marking of the board and package
1.1.7 Eligibility for capability approval
1.1.8 Structurally similar components and common
           production processes
1.1.9 Delayed delivery
1.1.10 Supplementary procedure for qualification
           approval
1.1.11 Certified test records
1.1.12 Standard rating and characteristics: climatic
           category
1.1.13 Unchecked parameters
1.1.14 Procedure to be followed in the event of
           failure of group C inspection
1.1.15 Ordering information
1.1.16 Reduced inspection
1.2 Test procedures
1.2.1 Test and measurement conditions
1.2.1.1 General
1.2.1.2 Measurement test patterns
1.2.1.3 Production testing
1.2.2 Visual inspection
1.2.3 Dimensioning and gauging
1.2.3.1 Board and pattern dimensions
1.2.3.2 Thickness
1.2.3.2.1 Thickness for single-sided and double-sided
           boards
1.2.3.2.2 Thickness of multilayer boards
1.2.3.2.3 Thickness in edge connector zone
1.2.3.3 Conductor width
1.2.3.4 Conductor spacing
1.2.3.5 Edge connector defects
1.2.3.6 Holes/registration
1.2.3.7 Plating thickness
1.2.4 Electrical test procedures
1.2.4.1 Resistance of conductors
1.2.4.2 Insulation resistance
1.2.4.2.1 Insulation resistance of the surface
1.2.4.2.2 Insulation resistance within a layer
1.2.4.2.3 Insulation resistance between layers
1.2.4.3 Interconnection continuity
1.2.4.4 Internal short circuits
1.2.5 Mechanical test procedures
1.2.5.1 Strength of terminations
1.2.5.1.1 Pull-off strength
1.2.5.1.2 Pull-out strength of plated through holes
1.2.5.2 Peel strength
1.2.5.2.1 Peel strength of conductors on rigid boards
1.2.5.2.2 Peel strength of conductors on a flexible
           base with or without cover layer
1.2.5.2.3 Peel strength of conductors after immersion
           in specified solvents
1.2.5.3 Flatness
1.2.5.4 Adhesion of plating
1.2.5.5 Flexural fatigue
1.2.6 Environmental and miscellaneous test
           procedures
1.2.6.1 Insulation resistance after damp heat
1.2.6.2 Process contamination
1.2.6.3 Rapid change of temperature
1.2.6.4 Thermal shock
1.2.6.4.1 Interlaminar bond of multilayer and flexible
           circuits
1.2.6.4.2 Thermal shock on plated through holes
1.2.6.4.3 Change in resistance of plated through holes
           (thermal cycling)
1.2.6.5 Thermal endurance
1.2.6.6 Solderability
1.2.6.7 Porosity of platings
1.2.6.8 Accelerated ageing
1.2.6.9 Solvent resistance of solder resists and of
           markings
1.2.6.10 Solder resistance of organic coatings such as
           solder resists and markings
Section two. Capability approval and maintenance of
                capability for printed circuits.
                Requirements and procedures
2.0 Introduction
2.1 Capability assessment procedures
2.2 Description of capability
2.3 Demonstration of capability
2.3.1 Test programme
2.3.2 Standard capability
2.3.3 Additional capability
2.3.4 Base materials
2.4 Abstract of description of capability
2.5 Capability approval report
2.6 Maintenance of approval
2.7 Extension of approval
2.7.1 Significant change procedure
2.7.2 Amendment procedure to PD 9002 and the
           capability manual
2.7.3 Temporary extension of approval
2.7.4 Extension of approval to other types of
           printed circuits
2.7.5 Additional customer requirement
2.8 Review, suspension and withdrawal of
           capability approval
2.8.1 Review approval
2.8.2 Suspension of approval
2.8.3 Withdrawal of approval
Section three. Draft rules for preparation of a
                customers's detail specification
3.0 Introduction
3.1 Related documents
3.2 Customer's detail specification
3.3 Instructions for completion of a customer's
           detail specification
3.3.1 Marking
3.3.2 Test information
3.3.2.1 Optional tests
3.3.2.2 Test requirements
3.3.2.3 Inspection levels and AQLs
3.4 Drawing information
Section four. Rework
4.0 Introduction
4.1 General
4.2 Rework capability approval procedure
4.2.1 Capability manual
4.2.2 Demonstration of capability
4.2.3 Abstract for PD 9002
4.3 Classification of rework
4.4 Inspection of rework
4.4.1 Capability approval
4.4.2 Production quality conformance inspection
Appendices
A Fluidized sand bath apparatus
B Customer's detail specification
C Example of a certified test record
D Guide to the requirements for the capability
           manual
Tables
1 Nominal thickness of tolerances
2 Total thickness after plating
3 Imperfections in zones of contact
4 Classification of defects
5 Rework capability approval inspection
Figures
1 Flow diagram for capability
2 Edge connector zone
3 Drum for peel test on flexible materials
4 Flexural fatigue apparatus
5 Schematic layout of steam/oxygen ageing test
           apparatus
6 Change in resistance of plated through holes
           (thermal cycling)
7 Typical circuit for measurement of resistance
           of plated through holes
8 Abrasion fixture