标准摘要
[中文适用范围]： 本部分 IEC 60068 规定了用于电子组件和机械部件（例如跳线、静电放电保护屏蔽、机械固定件、压接引脚及其他用于电子组件的机械部件）表面镀层的长须倾向测试，这些部件代表成品状态，且表面镀层为锡或锡合金。在所需测试流程中，模塑料、塑料等物理尺寸的变化不予考虑或评估。测试方法已基于知识方法开发。本文件也可用于分包商，如电镀车间、冲压车间或其他服务提供商，以确保供应链内表面质量的一致性。这些测试方法由相关组件或应用规范采用，并带有定义的验收标准。本文档中描述的测试适用于初始鉴定、第 7 条规定的定期监测，以及第 9 条规定的现有表面技术或制造工艺变更。连接器的配合区域不包括在本测试方法中。连接器的配合区域适用 IEC 60512-16-21。 [外文原描述]： IEC 60068-2-82:2019 specifies tests for the whiskering propensity of surface finishes of electric or electronic components and mechanical parts such as punched/stamped parts (for example, jumpers, electrostatic discharge protection shields, mechanical fixations, press‑fit pins and other mechanical parts used in electronic assemblies) representing the finished stage, with tin or tin-alloy finish. Changes of the physical dimensions of mould compounds, plastics and the like during the required test flow are not considered or assessed. The test methods have been developed by using a knowledge-based approach. This edition includes the following significant technical changes with respect to the previous edition: – extension of the scope of the test standard from electronic to electromechanic components and press-fit pins, which are used for assembly and interconnect technology; – significant reduction of the testing effort by a knowledge-based selection of test conditions i.e. tests not relevant for a given materials system can be omitted (see Annex D); – harmonization with JESD 201A by omission of severities M, N for temperature cycling tests; – highly reduced test duration (1 000 h instead of 4 000 h) for damp-heat test by introducing test condition at elevated humidity of 85 % R.H. and a temperature of 85 °C providing increased severity.
英文名称Environmental testing - Part 2-82: Tests - Test Xw1: Whisker test methods for components and parts used in electronic assemblies