{"id":239657,"date":"2024-10-19T15:40:45","date_gmt":"2024-10-19T15:40:45","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bsi-pd-iec-tr-631412020\/"},"modified":"2024-10-25T10:23:18","modified_gmt":"2024-10-25T10:23:18","slug":"bsi-pd-iec-tr-631412020","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bsi-pd-iec-tr-631412020\/","title":{"rendered":"BSI PD IEC TR 63141:2020"},"content":{"rendered":"

This document describes a new test method to control the volume of air injected into a conventional HAST chamber filled with water vapour. This document provides an overview of the conventional HAST chamber, an overview of the air-HAST equipment where air is incorporated into the HAST chamber, an example of an air-HAST test apparatus, and application examples of air-HAST.<\/p>\n

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PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nundefined <\/td>\n<\/tr>\n
4<\/td>\nCONTENTS <\/td>\n<\/tr>\n
7<\/td>\nFOREWORD <\/td>\n<\/tr>\n
9<\/td>\nINTRODUCTION <\/td>\n<\/tr>\n
10<\/td>\n1 Scope
2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
11<\/td>\n4 Overview of HAST and air-HAST
4.1 Overview of HAST chamber
4.1.1 Structure of HAST chamber
Figures
Figure 1 \u2013 Two types of HAST equipment and their structures <\/td>\n<\/tr>\n
12<\/td>\n4.1.2 Definition of humidity <\/td>\n<\/tr>\n
13<\/td>\nFigure 2 \u2013 Image of air vent process
Figure 3 \u2013 Saturated test <\/td>\n<\/tr>\n
14<\/td>\n4.2 Structure of air-HAST equipment
4.2.1 General
Figure 4 \u2013 Unsaturated test <\/td>\n<\/tr>\n
15<\/td>\nFigure 5 \u2013 Structure of two-vessel type air-HAST chamber <\/td>\n<\/tr>\n
16<\/td>\n4.2.2 Air concentration and relative humidity
5 Evaluation of tin whisker growth from lead-free plating and solder-joints
5.1 Whisker of lead-free solder (comb-type substrate)
5.1.1 General
Figure 6 \u2013 Structure of one-vessel type air-HAST chamber <\/td>\n<\/tr>\n
17<\/td>\n5.1.2 Summary of evaluation results of solder-joint whisker growth [3] [4]
Figure 7 \u2013 Example of test vehicle with comb pattern
Tables
Table 1 \u2013 Test conditions <\/td>\n<\/tr>\n
18<\/td>\nFigure 8 \u2013 Process flow for sample build <\/td>\n<\/tr>\n
19<\/td>\nFigure 9 \u2013 Temperature\/relative humidity profiles of HAST and air-HAST <\/td>\n<\/tr>\n
20<\/td>\nTable 2 \u2013 Influence of fluxes and circumstances to whisker growth
Table 3 \u2013 Whisker generation in HAST <\/td>\n<\/tr>\n
21<\/td>\nFigure 10 \u2013 Whisker generation situation in air-HAST
Table 4 \u2013 Whisker generation in air-HAST <\/td>\n<\/tr>\n
22<\/td>\nFigure 11 \u2013 Mapping of the cross-section at the solder fillet in HAST
Figure 12 \u2013 Mapping of the cross-section at the solder fillet in air-HAST <\/td>\n<\/tr>\n
24<\/td>\nFigure 13 \u2013 Arrhenius plot of the bromine-based flux
Figure 14 \u2013 Reciprocal of relative humidity of whisker generation on solder <\/td>\n<\/tr>\n
25<\/td>\nFigure 15 \u2013 Humidity properties of whisker generation on solder (pt.2) <\/td>\n<\/tr>\n
26<\/td>\n5.1.3 Conclusion
Table 5 \u2013 Comparison of coefficients for Equations (5), (6) and (7) <\/td>\n<\/tr>\n
27<\/td>\n5.2 Lead-free whisker of plating (mounting substrate)
5.2.1 General
5.2.2 Test method
Figure 16 \u2013 Evaluated sample <\/td>\n<\/tr>\n
28<\/td>\n5.2.3 Test results
Table 6 \u2013 Details of evaluated samples
Table 7 \u2013 Lead frames composition
Table 8 \u2013 Environmental test conditions <\/td>\n<\/tr>\n
29<\/td>\n5.2.4 Observations
Figure 17 \u2013 Whisker formation (Substrate: Cu) <\/td>\n<\/tr>\n
30<\/td>\nFigure 18 \u2013 Cross-section inspection results with electron-imaging (Substrate: Cu) <\/td>\n<\/tr>\n
31<\/td>\n5.2.5 Conclusion
6 Applied case of JISSO using electrically-conductive adhesive and acceleration test under humidity environments for joining parts
Figure 19 \u2013 Elements analysis <\/td>\n<\/tr>\n
32<\/td>\n6.1 General
6.2 Experiment method
6.2.1 Testing material
6.2.2 Test conditions
Figure 20 \u2013 Substrate for conductive resistance measurement and example of component mounting
Table 9 \u2013 Electrically-conductive adhesives <\/td>\n<\/tr>\n
33<\/td>\n6.2.3 Measurement and evaluation method
6.3 Test results
6.3.1 Experimental result
Figure 21 \u2013 Humidity test conductive resistance monitor test status
Table 10 \u2013 Testing material <\/td>\n<\/tr>\n
34<\/td>\nFigure 22 \u2013 Example of the conductive resistance value change
Figure 23 \u2013 Weibull plot of temperature acceleration (under fixed humidity conditions) <\/td>\n<\/tr>\n
35<\/td>\nFigure 24 \u2013 Arrhenius plot (fixed humidity) <\/td>\n<\/tr>\n
36<\/td>\nFigure 25 \u2013 Weibull plot of humidity acceleration (under fixed temperature conditions) <\/td>\n<\/tr>\n
37<\/td>\nFigure 26 \u2013 Arrhenius plot (fixed temperature)
Figure 27 \u2013 Eyring plot of all conditions <\/td>\n<\/tr>\n
38<\/td>\n6.3.2 Test result (1608R\/paste A)
Figure 28 \u2013 Comparison of paste (120 \u00b0C\/85 % RH Air-HAST)
Table 11 \u2013 Test conditions <\/td>\n<\/tr>\n
39<\/td>\nFigure 29 \u2013 Cross-section analysis of 1608R after a humidity test (SEM image)
Figure 30 \u2013 Magnified image of cross-section analysis of 1608R after a humidity test (SEM image) <\/td>\n<\/tr>\n
40<\/td>\n6.4 Points of attention
6.5 Summary
Figure 31 \u2013 Cross-section analysis of 1608R after a humidity test (SEM image)and examples of componential analysis by EDX <\/td>\n<\/tr>\n
41<\/td>\n7 Applied air-HAST to c-Si PV modules evaluation tests
7.1 Background and objective
7.2 Photovoltaic module structure and deterioration factors <\/td>\n<\/tr>\n
42<\/td>\n7.3 Test methods
7.3.1 Crystalline silicon photovoltaic module type-approval international standard
Figure 32 \u2013 Structure of c-Si PV module
Table 12 \u2013 Example of failure modes of PV module via materials <\/td>\n<\/tr>\n
43<\/td>\n7.3.2 Air-HAST work
7.3.3 Test samples
Figure 33 \u2013 Qualification test sequence in IEC 61215-1 [23] <\/td>\n<\/tr>\n
44<\/td>\n7.3.4 Test conditions
Figure 34 \u2013 Appearance of modules
Table 13 \u2013 Specifications of materials used in PV module <\/td>\n<\/tr>\n
45<\/td>\nTable 14 \u2013 Test conditions
Table 15 \u2013 Test conditions and partial pressures <\/td>\n<\/tr>\n
46<\/td>\n7.3.5 Measurement and analysis
7.4 Test results
7.4.1 DHT testing <\/td>\n<\/tr>\n
47<\/td>\nFigure 35 \u2013 EL images after DHT <\/td>\n<\/tr>\n
48<\/td>\n7.4.2 Saturated HAST
Figure 36 \u2013 Degradation profiles with DHT
Figure 37 \u2013 EL images of HAST 105 \u00b0C\/100 % RH <\/td>\n<\/tr>\n
49<\/td>\n7.4.3 Air-HAST
Figure 38 \u2013 EL images after HAST 120 oC\/100 % RH
Figure 39 \u2013 Degradation profiles with HAST <\/td>\n<\/tr>\n
50<\/td>\n7.4.4 External appearance comparison
Figure 40 \u2013 EL images after air-HAST
Figure 41 \u2013 Degradation profiles with air-HAST <\/td>\n<\/tr>\n
51<\/td>\nFigure 42 \u2013 Appearance of modules after each test <\/td>\n<\/tr>\n
52<\/td>\n7.4.5 Use of dark I-V measurement to infer deterioration factors
7.4.6 Use of ion chromatography to quantify residual acetic acid ions
Figure 43 \u2013 Dark I-V <\/td>\n<\/tr>\n
53<\/td>\n7.5 Discussion
7.5.1 Environment test method comparisons
Figure 44 \u2013 Residue of acetate ion and retention of Pmax after each test <\/td>\n<\/tr>\n
54<\/td>\n7.5.2 Power-loss profiles by moisture permeation
7.5.3 Comparisons by ion chromatography acetic acid quantification <\/td>\n<\/tr>\n
55<\/td>\n7.6 Conclusion <\/td>\n<\/tr>\n
56<\/td>\n8 Summary <\/td>\n<\/tr>\n
57<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Damp heat, steady state (unsaturated pressurized vapour with air)<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2020<\/td>\n60<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":239662,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-239657","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/239657","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/239662"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=239657"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=239657"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=239657"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}