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BS IEC 60747-5-13:2021

BS IEC 60747-5-13:2021

$102.76

Semiconductor devices – Optoelectronic devices. Hydrogen sulphide corrosion test for LED packages

Published By Publication Date Number of Pages
BSI 2021 22
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PDF Catalog

PDF Pages PDF Title
2 undefined
4 CONTENTS
6 FOREWORD
8 INTRODUCTION
9 1 Scope
2 Normative references
3 Terms and definitions
10 4 Test apparatus
4.1 General
4.2 Test jig
4.3 Test setup
11 5 Test atmosphere
6 Preconditioning
6.1 General
6.2 Hygroscopic treatment
Figures
Figure 1 – Example of setup
12 7 Method
7.1 Initial measurements
7.2 Procedure
Figure 2 – Example of LED luminous flux maintenancefactor before & after hygroscopic treatment
13 7.3 Final measurements
14 8 Details to be specified
15 Annex A (informative)Information to predict luminous/radiant flux degradationin particular conditions from the test results
A.1 Correspondence relation between hydrogen sulphide corrosion test and indoor corrosivity categories
Table A.1 – Description of typical environments related to the estimationof indoor corrosivity categories in ISO 11844-1:2006, Table D.3
16 A.2 Correspondence relation between the result of this corrosion test and the corrosion in the field environment (Case example)
Figure A.1 – Mass increase example of silver test piecehydrogen sulphide corrosion test
Table A.2 – The upper limit of mass increase of silver test pieces in the indoor environment of corrosivity category in ISO 11844-1:2006 for approximately ten years’ usage
17 Annex B (informative)Method for determining the massincrease of silver test pieces
B.1 Purpose
B.2 Method
B.3 Silver test pieces
B.4 How to place silver test pieces
18 Figure B.1 – Example of layout of silver test pieces
19 Annex C (informative)Silver test piece for corrosion monitoring
C.1 Specimens
C.2 Preparation
20 Annex D (informative)Gas concentrations set up of test atmosphere
D.1 General
D.2 Reason about no allowable range of each gas concentration
D.3 Application of the actual test

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BS IEC 60747-5-13:2021
$102.76