CLC/TS 50466:2006

Long duration storage of electronic components - Specification for implementation

This document, which is in line with IEC/PAS 62435 relating to the management of obsolescence of electronic components, is first of all a practical guide to methods of long duration storage (more than 5 years) which summarizes the existing practices in the industry.

Langzeitlagerung von elektronischen Bauelementen - Spezifikation für die Ausführung

Stockage longue durée des composants électroniques - Guide de mise en oeuvre

Dolgotrajno hranjenje elektronskih komponent - Specifikacija uporabe

General Information

• Status: Published
• Publication Date: 11-May-2006
• ICS: 31.020 - Electronic components in general
• Technical Committee: CLC/SR 107 - Process management for avionics
• Drafting Committee: IEC/TC 107 - IEC_TC_107
• Parallel Committee: IEC/TC 107 - IEC_TC_107
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 12-May-2006
• Completion Date: 12-May-2006
• Ref Project: SIST-TS CLC/TS 50466:2007 - Long duration storage of electronic components - Specification for implementation

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TECHNICAL SPECIFICATION
CLC/TS 50466

SPÉCIFICATION TECHNIQUE
May 2006
TECHNISCHE SPEZIFIKATION


ICS 31.020


English version


Long duration storage of electronic components –
Specification for implementation



Stockage longue durée des composants Langzeitlagerung von elektronischen
électroniques – Bauelementen –
Guide de mise en oeuvre Spezifikation für die Ausführung






This Technical Specification was approved by CENELEC on 2005-12-03.

CENELEC members are required to announce the existence of this TS in the same way as for an EN and to
make the TS available promptly at national level in an appropriate form. It is permissible to keep conflicting
national standards in force.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, the Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.



CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels


© 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. CLC/TS 50466:2006 E

---------------------- Page: 2 ----------------------

CLC/TS 50466:2006 - 2 -
Foreword

This Technical Specification was prepared by the Technical Committee CENELEC TC 107X,
Process management for avionics.

The text of the draft was submitted to the formal vote and was approved by CENELEC as
CLC/TS 50466 on 2005-12-03.

The following date was fixed:

– latest date by which the existence of the CLC/TS
has to be announced at national level (doa) 2006-06-03

This document, which is in line with IEC/PAS 62435 relating to the management of
obsolescence of electronic components, is first of all a practical guide to methods of long
duration storage (more than 5 years) which summarizes the existing practices in the industry.

The application of the approach proposed in this guide in no way guarantees that the stored
components are in perfect operating condition at the end of this storage. It only comprises a
means of minimizing potential and probable degradation factors.

Unless otherwise specified, the approach, as well as the methods presented apply to all families
of electronic components:
− passive components, including quartz crystals, connectors and relays. However, components
with "manufacturer's" specifications showing an expiry date, or specific storage conditions,
are excluded from this guide (e.g. primary cells, storage cells, etc.),
− encapsulated or non-encapsulated active components of a silicon [Si] or gallium arsenide
[GaAs] technology,
− micro-electronic assemblies.

---------------------- Page: 3 ----------------------

- 3 - CLC/TS 50466:2006
Contents

1 General .5
2 Normative references.5
3 Storage decision criteria .6
3.1 Advantages of storage .6
3.1.1 Technical simplicity – Rapidity.6
3.1.2 Solution durability .6
3.1.3 Preventive storage.6
3.2 Hazards – Drawbacks.6
3.2.1 Generic aging hazard.6
3.2.2 Poor stock dimensioning.7
3.2.3 Incorrect control of reliability during storage .7
3.2.4 Freezing equipment functionalities.7
3.3 Storage cost (Annex C) .
...