BS-EN-100015-2-1994.pdf

BRITISH STANDARD BS EN 100015-2:1994 Basic specification Protection of electrostatic sensitive devices Part 2: Requirements for low humidity conditions The European Standard EN 100015-2:1993 has the status of a British Standard Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 01:48:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 100015-2:1994 This British Standard, having been prepared under the direction of the Electronic Components Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 15 April 1994 © BSI 01-1999 The following BSI references relate to the work on this standard: Committee reference ECL/23 Draft for comment 93/05029 DC ISBN 0 580 22872 X Cooperating organizations The European Committee for Electrotechnical Standardization (CENELEC), under whose supervision this European Standard was prepared, comprises the national committees of the following countries: The membership of the CECC is identical, with the exception of the national electrotechnical committees of Greece, Iceland and Luxembourg. AustriaItaly BelgiumLuxembourg DenmarkNetherlands FinlandNorway FrancePortugal GermanySpain GreeceSweden IcelandSwitzerland IrelandUnited Kingdom Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 01:48:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 100015-2:1994 © BSI 01-1999i Contents Page Cooperating organizationsInside front cover National forewordii Foreword2 Text of EN 100015-23 National annex NA (informative) Committees responsibleInside back cover Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 01:48:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 100015-2:1994 ii © BSI 01-1999 National foreword This British Standard has been prepared under the direction of the Electronic Components Standards Policy Committee. It is identical with EN 100015-2:1993 Basic specification: Protection of electrostatic sensitive devices Part 2: Requirements for low humidity conditions, published by the CENELEC Electronic Components Committee (CECC). This standard should be read in conjunction with BS EN 100015-1:1992 Basic specification: Protection of electrostatic sensitive devices Part 1: General requirements Other particular requirement Parts are: BS EN 100015-3, Requirements for clean room areas. BS EN 100015-4, Requirements for high voltage environments. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 6, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 01:48:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN 100015-2 December 1993 UDC Descriptors: Quality, electronic components, electrostatic sensitive devices English version Basic Specification: Protection of Electrostatic Sensitive Devices Part 2: Requirements for Low Humidity Conditions Spécification de base: Protection des produits sensibles aux décharges électrostatiques Partie 2: Exigences relatives aux conditions de basse humidité Grundspezifikation: Schutz von elektrostatisch gefährdeten Bauelementen Teil 2: Anforderungen für Bereiche mit niedriger Luftfeuchtigkeit This European Standard was approved by CENELEC Electronic Components Committee (CECC) on 29 July 1993. CENELEC members are bound to comply with CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the General Secretariat of the CECC or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsiblity of a CENELEC member into its own language and notified to the CECC General Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. The membership of the CECC is identical, with the exception of the national electrotechnical committees of Greece, Iceland and Luxembourg. CECC CENELEC Electronic Components Committee Comité des Composants Electroniques du CENELEC CENELEC-Komitee für Bauelemente der Elektronik General Secretariat: Gartenstr. 179, D-60596 Frankfurt/Main © 1993 Copyright reserved to CENELEC members Ref. No. EN 100015-2:1993 E Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 01:48:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 100015-2:1993 © BSI 01-1999 2 Foreword The CENELEC Electronic Components Committee (CECC) is composed of those member countries of the European Committee for Electrotechnical Standardization (CENELEC) who wish to take part in a harmonized System for electronic components of assessed quality. The object of the System is to facilitate international trade by the harmonization of the specifications and quality assessment procedures for electronic components, and by the grant of an internationally recognized Mark, or Certificate, of Conformity. The components produced under the System are thereby acceptable in all member countries without further testing. This European Standard was prepared by CECC WG ESD. The text of the draft based on document CECC (Secretariat) 3271 was submitted to the formal vote; together with the voting report, circulated as document CECC (Secretariat) 3372, it was approved by CECC as EN 100015-2 on 29 July 1993. The following dates were fixed: Contents Page Section 1. General 1General3 1.1Scope3 1.2 Definition3 Section 2. Design considerations to reduce the effects of ESD Section 3. Labels, signs and marking Section 4. ESD protected area (EPA) 4.3.1General3 4.4Ionization3 4.5Humidity3 4.5.1 Modification3 4.5.201 Addition3 Section 5. Protective packaging, marking and identification of ESDS Section 6. Purchase, receipt, storage and handling 6.2Purchase3 6.3.1Modification3 Section 7. Training Section 8. Quality responsibilities 8.8.201Wrist band and ground cord4 8.8.202 Leg straps, toe and heel straps and electrostatic dissipative footwear4 Section 9. Periodic audit instructions Annex A Test procedures5 Table 15 Table 25 latest date of announcement of the EN at national level(doa) 1993-09-16 latest date of publication of an identical national standard(dop) 1994-03-16 latest date of withdrawal of conflicting national standards(dow) 1994-03-16 Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 01:48:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 100015-2:1993 © BSI 01-19993 Section 1. General 1 General 1.1 Scope This standard gives the additional requirements to standard EN 100015-1 for the protection of electrostatic discharge sensitive devices from electrostatic discharges in areas where a relative humidity of less than 20 % may be encountered. CAUTION: Although this standard does not include requirements for personal safety, attention is drawn to the need for all concerned to comply with the relevant local statutory requirements regarding the health and safety of all persons in all places of work including those covered by this standard. (Attention is drawn to the fact that electrical potentials in excess of 50 V a.c. or 120 V d.c. may be dangerous to personnel). 1.2 Definitions All definitions in clause 1.2 of Part 1 apply. Section 2. Design considerations to reduce the effects of ESD All clauses in Section 2 of Part 1 apply. Section 3. Labels, signs and marking All clauses in Section 3 in Part 1 apply. Section 4. ESD protected area (EPA) All clauses in Section 4 of Part 1 apply with the following exceptions. 4.3.1 General Modification Materials used within an EPA shall have the characteristics described in clauses 4.3.2 to 4.3.8 of EN 100015-1 which shall be measured at the lowest and highest expected relative humidity values. For qualification tests, materials shall be conditioned for 72 h before testing. NOTE 1Suitable measuring methods for material parameters are given in EN 100015-1, annex A. NOTE 2Some protective materials have electrical properties which are very significantly affected by low humidity and may not be suitable for use in this environment. 4.4 Ionization Addition NOTEIonization may be especially important in low humidity areas owing to the reduced charge decay characteristics of materials. 4.5 Humidity 4.5.1 Modification In areas where there is a risk of a relative humidity below 20% being encountered, the requirements in 4.5.201 shall be followed. NOTELow relative humidity severely reduces the dissipation effectiveness of materials used in certain types of work surfaces, packaging, flooring and clothing. 4.5.201 Addition The minimum and maximum expected relative humidity levels shall be clearly stated. All materials used shall be within the specified ohmic values (resistance to ground, surface resistivity and volume resistivity) and charge decay characteristics of Table 1 and Table 2 throughout the stated range of relative humidity values. Where no minimum value is specified or marked on the materials, adherence to EN 100015-1 only shall be assumed. Section 5. Protective packaging, marking and identification of ESDS All clauses in Section 5 of Part 1 apply. Section 6. Purchase, receipt, storage and handling All clauses in Section 6 of Part 1 apply with the following exceptions. 6.2 Purchase Modification All procurement orders for components and items related to electrostatic special handling activities shall quote the requirements of this Part of EN 100015. Both packaging materials and packaging actions shall be covered by these requirements. All procurement personnel shall receive appropriate training, see 7.2 of EN 100015/1. 6.3.1 Modification All receipt EPA should meet the requirements in Section 4 of this Part of EN 100015. Section 7. Training All clauses in Section 7 of Part 1 apply. Section 8. Quality responsibilities All clauses in Section 8 of Part 1 apply together with the following additions. Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 01:48:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 100015-2:1993 4 © BSI 01-1999 8.8.201 Wrist band and ground cord A check in accordance with EN 100015-1 clause 8.9.2 shall be performed prior to each work session. 8.8.202 Leg straps, toe and heel straps and electrostatic dissipative footwear A check in accordance with EN 100015-1 clause 8.9.3 shall be performed prior to each work session. Section 9. Periodic audit instructions All clauses in Section 9 of Part 1 apply. Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 01:48:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 100015-2:1993 © BSI 01-19995 Annex A Test procedures A.5 Measurement of relative humidity Replacement The measuring instrument shall have a reading accuracy better than 3 % relative humidity over the expected range. It shall be mounted within the EPA not more than 1 m above the level where ESDS are handled. Where more than one EPA is contained in a single area which has the same environment, then a single hygrometer may be used to monitor the whole area. Table 1 Table 2 NOTE 2: Replacement Surface and volume resistivity evaluations and charge decay measurements shall be taken at the stated lowest and highest relative humidity values. Materials shall be conditioned for a period of 72 h before testing. NOTE 7: Replacement Surface and volume resistivity evaluations and charge decay measurements shall be taken at the stated lowest and highest relative humidity values. Materials shall be conditioned for a period of 72 h before testing. Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 01:48:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 6 blank Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 01:48:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 100015-2:1994 © BSI 01-1999 National annex NA (informative) Committees responsible The preparation of this British Standard was entrusted by the Electronic Components Standards Policy Committee (ECL/-) to Technical Committee ECL/23, upon which the following bodies were represented: Association of Franchised Distributors of Electronic Components British Electro-static Manufacturers Association British Electrostatic Control Association British Plastics Federation British Telecommunications plc EEA (the Association of Electronics, Telecommunications and Business Equipment Industries) Electronic Components Industry Federation GAMBICA (BEAMA Ltd.) 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