Mechanical quantity measuring apparatus

    公开(公告)号:US20060216848A1

    公开(公告)日:2006-09-28

    申请号:US11349913

    申请日:2006-02-09

    IPC分类号: H01L21/00

    CPC分类号: G01B7/18 G01L1/2293

    摘要: A semiconductor mechanical quantity measuring apparatus in which the reverse surface of a strain-detecting semiconductor element is bonded to an object of measurement, and a member having a small elastic modulus is interposed between the wiring board for supporting the strain-detecting semiconductor element and the strain-detecting semiconductor element. It then becomes possible to reduce an undesirable effect that the rigidity and thermal deformation of the wiring board have on the strain-detecting semiconductor element, while supporting the strain-detecting semiconductor element.

    LIFE PREDICTION METHOD OF ELECTRONIC DEVICE AND DESIGN METHOD OF ELECTRONIC DEVICE USING THE METHOD
    20.
    发明申请
    LIFE PREDICTION METHOD OF ELECTRONIC DEVICE AND DESIGN METHOD OF ELECTRONIC DEVICE USING THE METHOD 审中-公开
    电子设备的生命预测方法和使用该方法的电子设备的设计方法

    公开(公告)号:US20130067424A1

    公开(公告)日:2013-03-14

    申请号:US13593499

    申请日:2012-08-23

    IPC分类号: G06F19/00 G06F17/50

    摘要: A life prediction method of an electronic device in which the life prediction accuracy is more improved than that in a related art technique, and a design method of an electronic device based on the above method, are established. Life prediction is performed by incorporating either of a change in a physical property of a solder joint portion and a change in the fatigue life of a solder, the changes occurring when left at a high temperature. The change in a physical property of the solder joint portion or the change in the fatigue life of the solder is determined from the relationship between a heat treatment temperature and a heat treatment time. These changes are then formulated to be incorporated into the life prediction.

    摘要翻译: 建立了寿命预测精度比现有技术更好的电子设备的寿命预测方法,并且建立了基于上述方法的电子设备的设计方法。 寿命预测通过掺入焊接部分的物理性质的改变和焊料的疲劳寿命的变化来执行,当在高温下放置时发生的变化。 根据热处理温度和热处理时间的关系,确定焊点的物性的变化或焊料的疲劳寿命的变化。 然后将这些变化制定为纳入人生预测。