BS EN IEC 60749-37:2022 – TC
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Tracked Changes. Semiconductor devices. Mechanical and climatic test methods – Board level drop test method using an accelerometer
Published By | Publication Date | Number of Pages |
BSI | 2022 | 60 |
IEC 60749-37:2022 is available as IEC 60749-37:2022 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60749-37:2022 provides a test method that is intended to evaluate and compare drop performance of surface mount electronic components for handheld electronic product applications in an accelerated test environment, where excessive flexure of a circuit board causes product failure. The purpose is to standardize the test board and test methodology to provide a reproducible assessment of the drop test performance of surface-mounted components while producing the same failure modes normally observed during product level test. This edition includes the following significant technical changes with respect to the previous edition: – correction of a previous technical error concerning test conditions; – updates to reflect improvements in technology.
PDF Catalog
PDF Pages | PDF Title |
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1 | 30467233 |
33 | A-30425837 |
34 | undefined |
39 | Annex ZA (normative)Normative references to international publicationswith their corresponding European publications |
40 | Blank Page |
41 | English CONTENTS |
42 | FOREWORD |
44 | INTRODUCTION |
45 | 1 Scope 2 Normative references 3 Terms and definitions |
46 | 4 Test apparatus and components 4.1 Test apparatus |
47 | 4.2 Test components 4.3 Test board 4.4 Test board assembly |
48 | 4.5 Number of components and sample size 5 Test procedure 5.1 Test equipment and parameters Table 1 – Quantity of test boards and components required for testing |
49 | Figure 1 – Drop test apparatus detail |
50 | 5.2 Pre-test characterization Figure 2 – Calculation of velocity change |
51 | 5.3 Drop testing Figure 3 – Typical shock test half-sine pulse graphic and formulae |
52 | 6 Failure criteria and failure analysis |
53 | 7 Summary |
54 | Annex A (informative) Preferred board construction, material, design and layout A.1 Preferred board construction, material and design Table A.1 – Test board stack-up and material |
55 | Table A.2 – Mechanical property requirements for dielectric materials |
56 | A.2 Preferred test board size, layout, and component locations Table A.3 – Recommended test board pad sizes and solder mask openings |
57 | Figure A.1 – Board footprint and BGA layout |
58 | Figure A.2 – Test vehicle with 4 component placement (top side – left) and 1 component at center location (bottom side – right). |
59 | Bibliography |