BS EN 60749-24-2004 半导体器件.机械和气候试验方法.加速耐湿性.无偏差HAST

标准号：BS EN 60749-24-2004
中文标准名称：半导体器件.机械和气候试验方法.加速耐湿性.无偏差HAST
英文标准名称：Semiconductor devices - Mechanical and climatic test methods - Accelerated moisture resistance - Unbiased HAST
标准类型：L40
发布日期：2004/6/24 12:00:00
实施日期：2004/6/24 12:00:00
中国标准分类号：L40
国际标准分类号：31.080.01
适用范围：The unbiased highly accelerated stress testing (HAST) is performed for the purpose of evaluating the reliability of non-hermetically packaged solid-state devices in humid environments. It is a highly accelerated test which employs temperature and humidity under non-condensing conditions to accelerate the penetration of moisture through the external protective material (encapsulant or seal) or along the interface between the external protective material and the metallic conductors which pass through it. Bias is not applied in this test to ensure that the failure mechanisms potentially overshadowed by bias can be uncovered (e.g. galvanic corrosion). This test is used to identify failure mechanisms internal to the package and is destructive. NOTE This test is a complete rewrite of the test contained in Clause 4C of Chapter 3 of IEC 60749 (1996) (without bias voltage).