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oSIST prEN IEC 60068-2-88:2024

(Main)

Environmental testing - Part 2-88: Tests - Test xd: Resistance of components and assemblies to liquid cleaning media

Environmental testing - Part 2-88: Tests - Test xd: Resistance of components and assemblies to liquid cleaning media

Umgebungseinflüsse – Teil 2-88: Prüfungen – Prüfung XD: Beständigkeit von Bauelementen und Baugruppen gegenüber flüssigen Reinigungsmedien

Okoljsko preskušanje - 2-88. del: Preskusi - Preskus xd: Odpornost komponent in sestavov na tekoče čistilno sredstvo

General Information

Status
Not Published
Public Enquiry End Date
31-Oct-2024
ICS
19.040 - Environmental testing
31.190 - Electronic component assemblies
Technical Committee
ITIV - Electronics assembly technology and Environmental standardization
Current Stage
4020 - Public enquire (PE) (Adopted Project)
Start Date
03-Sep-2024
Due Date
21-Jan-2025
Ref Project
prEN IEC 60068-2-88:2024 - Environmental testing - Part 2-88: Tests - Test xd: Resistance of components and assemblies to liquid cleaning media

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SLOVENSKI STANDARD
01-oktober-2024
Okoljsko preskušanje - 2-88. del: Preskusi - Preskus xd: Odpornost komponent in
sestavov na tekoče čistilno sredstvo
Environmental testing - Part 2-88: Tests - Test xd: Resistance of components and
assemblies to liquid cleaning media
Ta slovenski standard je istoveten z: prEN IEC 60068-2-88:2024
ICS:
19.040 Preskušanje v zvezi z Environmental testing
okoljem
31.190 Sestavljeni elektronski Electronic component
elementi assemblies
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

91/1964/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60068-2-88 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2024-08-23 2024-11-15
SUPERSEDES DOCUMENTS:
91/1908/CD, 91/1929/CC
IEC TC 91 : ELECTRONICS ASSEMBLY TECHNOLOGY
SECRETARIAT: SECRETARY:
Japan Mr Osamu IKEDA
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):
TC 37,TC 40,TC 46,TC 47,TC 48,TC 49,TC 51,TC 86,TC 94,TC
104,TC 107
ASPECTS CONCERNED:
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft for
Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some Countries” clau ses to
be included should this proposal proceed. Recipients are reminded that the CDV stage is the final stage for submitting ISC
clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
ENVIRONMENTAL TESTING - Part 2-88: Tests – Test XD: Resistance of components and assemblies to liquid
cleaning media
PROPOSED STABILITY DATE: 2030
NOTE FROM TC/SC OFFICERS:
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions. You
may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without permis sion in
writing from IEC.
91/1964/CDV – 2 – IEC CDV 60068-2-88 © IEC:2024
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 8
4 Objective and general aspects . 9
4.1 Objective . 9
4.2 General . 9
4.3 Qualification and validation process . 9
5 Test liquids . 10
5.1 Test liquid W - Water based neutral, single phase . 10
5.1.1 Preparation . 10
5.1.2 Formulation . 10
5.1.3 Specification . 10
5.2 Test liquid W - Water based alkaline . 10
5.2.1 Preparation . 10
5.2.2 Formulation . 10
5.2.3 Specification . 10
5.3 Test liquid OR – Petroleum based organic solvent, single phase . 11
5.3.1 Preparation . 11
5.3.2 Formulation . 11
5.3.3 Specification . 11
5.4 Test liquid OR – Glycol based organic solvent . 11
5.4.1 Preparation . 11
5.4.2 Formulation . 11
5.4.3 Specification . 11
5.5 Test liquid D - Deionized water . 11
5.5.1 Preparation . 11
5.5.2 Specification . 11
6 Test apparatus . 12
6.1 Containers . 12
6.2 Miscellaneous laboratory equipment . 12
6.3 Temperature controlled equipment . 12
6.4 Balance . 12
6.4.1 Thermometer . 12
6.4.2 pH meter . 12
7 Test XD Test procedure for components . 13
7.1 Object . 13
7.2 Preconditioning . 13
7.3 Initial measurements . 13
7.3.1 Visual inspection . 13
7.3.2 Electrical and mechanical measurement . 13
7.4 Conditioning. 13

IEC CDV 60068-2-88 © IEC:2024 – 3 – 91/1964/CDV
7.4.1 Test conditions and severities. 13
7.4.2 Method 1 - Manual stirring . 14
7.4.3 Method 2 - Automatic Stirring . 14
7.5 Recovery . 15
7.6 Final measurements. 15
7.7 Information to be given in the relevant specification . 15
8 Test XD - Test procedure for circuit boards. 15
8.1 Object . 15
8.2 Preconditioning . 15
8.2.1 Drying process . 15
8.3 Initial measurements . 16
8.3.1 Initial weight . 16
8.3.2 Visual inspection . 16
8.4 Conditioning. 17
8.4.1 Test conditions and severities. 17
8.4.2 Method - Automatic Stirring . 17
8.5 Recovery . 17
8.6 Final measurements. 18
8.6.1 Final weight . 18
8.6.2 Final visual inspection . 18
8.6.3 Inspection of the white paper . 18
8.7 Information to be given in the relevant specification . 18
9 Test XD - Test procedure for assemblies . 19
9.1 Object . 19
9.2 Preconditioning . 19
9.2.1 General . 19
9.2.2 Soldering . 19
9.2.3 Preparing of a reference . 19
9.3 Initial measurements . 19
9.3.1 Visual inspection - Microscope . 19
9.3.2 Impedance spectroscopy (optional) . 20
9.3.3 Electrical function tests . 20
9.4 Conditioning. 20
9.4.1 Test parameters . 20
9.4.2 Test apparatus . 21
9.4.3 Test procedure . 21
9.5 Recovery . 21
9.6 Final measurements. 21
9.6.1 Final visual inspection . 21
9.6.2 Final impedance spectroscopy (optional) . 22
9.6.3 Final electrical function tests . 22
9.7 Information to be given in the relevant specification . 22
Annex A (normative) Qualification and process validation . 23
A.1 General . 23
A.2 Component and circuit board qualification process . 23
A.3 Cleaning process validation . 23
Annex B (informative) Typical cleaning procedures . 24
B.1 Spray-in-Air process (SIA) . 24

91/1964/CDV – 4 – IEC CDV 60068-2-88 © IEC:2024
B.2 Dip tank process . 26
Annex C (informative) Impedance spectroscopy . 27
C.1 General description . 27
C.2 Measuring system set up . 27
C.3 Selection of measuring parameters . 27
C.4 Interpretation of impedance curves . 28
Bibliography .
...

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