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碲镉汞线列红外探测器模块温度循环的可靠性

Keywords: 碲镉汞红外探测器,可靠性,热应力,形变,有限元分析

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Abstract:

针对直接倒焊(Ⅰ型)、间接倒焊(Ⅱ型)两种红外探测器模块,两者中的探测器芯片、硅读出电路和引线基板的尺寸完全相同,只在倒焊封装结构上有所差异,用有限元方法分析比较了这两种封装形式的基本模块于液氮温度时的热应力和形变大小情况,分析结果与实验现象符合较好,模块低温形变值的测量验证了有限元分析结果的合理性.

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