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Standardisation of electrostatic test methods and electrostatic ...
TC101 Activities • TC101 is electrostatic expertise based rather than product oriented • TC101 “products” are electrostatic standards such as test methods • TC101 “clients” are “product” oriented TCs and industrial users
Development of new projects • Driven by market needs • TC101 does not have resources to develop new test methods – Existing proven methods will often be adopted and published as an international standard – In the electronics sector ESD Association Standards often form the basis of TC101 projects
Part 1 Guide to the principles of electrostatic phenomena • 61340-1 Guide to the principles of electrostatic phenomena (pre-work stage) • 61340-1-2 Definitions (In progress)
Part 2 Measurement methods in electrostatics • 61340-2-1 Ability of materials and products to dissipate electrostatic charge (2002) – charge decay test methods
• 61340-2-2 Measurement of chargeability (2000) – Faraday pail, electrostatic field measurements
Part 5 Protection of electronic devices • 61340-5-1 General Requirements (1998, under review, target 2006) • 61340-5-2 User Guide (1999, under review, target 2006) • 61340-5-3 Packaging for ESD sensitive devices (pre-work stage)
ESD shielding packaging • Shielding packaging must protect against direct ESD and electrostatic fields • There are many ways shielding performance can be achieved – We only have a test method for shielding bags – We don’t have a shielding test method for boxes – We don’t have a shielding test method for combinations of packaging (e.g. tape reel placed in conductive bag)
Electrostatic discharge measurements • Measurement of ESD parameters such as current and charge transfer may be useful in assessing ESD risks – electronics and explosion hazards
Industrial electrostatic hazards avoidance • Europe is developing standards in support of ATEX and Personal Protective Equipment Directives – CLC/TR50404 “Code of practice for avoidance of hazards due to static electricity”
Test methods for ESD garments and fabrics • Electrostatic properties of garments are important in electronics damage prevention and ignition hazards avoidance in petrochemical and process industries • Surface resistance and charge decay tests do not work for assessing all modern materials • ESTAT Garments project – Concluded that peak ESD current and charge transfer, and external electrostatic fields are key parameters – Recommended and evaluated test methods that may well achieve standardisation
Future markets • TC101 will continue to be driven by the electronics market for the near future • Demands for test methods and guidance related to electrostatic hazards will increase for many other markets and environments – – – – – –
Industrial Domestic Hospitals Petroleum forecourt Chemical Pharmaceutical
Implementing 61340-5-1: Future challenges for industry •
The new 61340-5-1 and -2 are expected within 2 years – more in line with ISO9000
•
61340-5-1 Requirements will be – – – –
•
ESD program plan ESD training plan Compliance verification plan Some technical requirements
You will be able to put what ESD measures you want to into the ESD Program – this flexibility is needed for world wide application in the electronics market
• • •
-5-2 User Guide will be more comprehensive than before It will be possible to write an ESD Program which does not work, but does comply with 61340-5-1!! The challenge for industry users will be to use the standard effectively and write good ESD Programs for themselves.
To get involved in IEC standardisation work… • The member National Committees are responsible for – Appointing experts to TC101 – Proposing new projects – Approving standards under development
