BS EN 61188-1-1:1997

INTRODUCTION
1 Scope
2 Normative reference
3 Basic requirements
    3.1 Design
    3.2 Rigid board manufacturer
    3.3 Assembly
    3.4 Use
4 Deviations from flatness - rigid copper-clad
    base material
    4.1 Causes
    4.2 Prevention and correction
    4.3 Test methods and requirements
5 Deviations from flatness - unassembled rigid
    printed boards
    5.1 Causes
    5.2 Prevention
    5.3 Ratification
    5.4 Requirements for flatness
    5.5 Measurement methods
6 Deviations from flatness - rigid printed board
    assemblies
    6.1 Causes
    6.2 Prevention
    6.3 Correction
7 Problems associated with placement of surface-mounted
    components
    7.1 Placement of components (assembly)
    7.2 Requirements for "pick-and-place" machines
8 Deviations from flatness in service
9 Prevention summary
10 Corrective action summary
Annex ZA (normative) Normative references to international
publications with their corresponding European publications

Covers factors controlling the flatness of rigid printed boards with their assemblies in order to advise the designer, manufacturer, assembler and user of rigid printed boards and assemblies of issues affecting flatness. Includes advice with regard to design, base material, unassembled printed board and printed board assemblies.