Apparatus and method for heating a board-mounted electrical module for
rework
    8.
    发明授权
    Apparatus and method for heating a board-mounted electrical module for rework 失效
    用于加热板载电气模块以进行返工的装置和方法

    公开(公告)号:US5735450A

    公开(公告)日:1998-04-07

    申请号:US669902

    申请日:1996-06-21

    IPC分类号: B23K1/012 B23K1/018

    CPC分类号: B23K1/012 B23K2201/42

    摘要: An apparatus for heating a module mounted on a card includes a heating chamber adapted to receive the card and module, a nozzle adapted to surround the module and provide a flow of heated gas thereover, and a heated support surface for heating a bottom surface of a card immediately underlying the module. The method of removing and replacing a module on a card includes preheating the card and module prior to heating the contact sites to a solder reflow temperature and also preheating a card and a replacement module to an equilibrium temperature prior to increasing the temperature of the contact sites to the reflow temperature. The apparatus and method embodying the present invention effectively addresses the problem of providing a faster heating cycle, and a more even temperature distribution across the contact sites of the module and card.

    摘要翻译: 用于加热安装在卡上的模块的装置包括适于接收卡和模块的加热室,适于包围模块并在其上提供加热气体流的喷嘴,以及加热支撑表面,用于加热 立即在模块底下的卡。 移除和更换卡上的模块的方法包括在将接触部位加热到回流焊温度之前预热卡和模块,并且在增加接触部位的温度之前将卡和替换模块预热到平衡温度 到回流温度。 体现本发明的装置和方法有效地解决了提供更快的加热循环以及跨模块和卡的接触位置更均匀的温度分布的问题。

    Method and system for electronically modeling and estimating characteristics of a multi-layer integrated circuit chip carrier
    10.
    发明授权
    Method and system for electronically modeling and estimating characteristics of a multi-layer integrated circuit chip carrier 失效
    用于电子建模和估计多层集成电路芯片载体特性的方法和系统

    公开(公告)号:US06574780B2

    公开(公告)日:2003-06-03

    申请号:US09845395

    申请日:2001-04-30

    IPC分类号: G06F1750

    CPC分类号: G06F17/5068 G06F2217/40

    摘要: For a mulitlayer chip carrier module a computer program receives a large plurality of module design parameters and provides as output a graphical representation of the design together with text files that rate module wireability, including die pad position, attachment of each die pad to its BGA pad, and net cross-over; and quantifies the number of redistribution layers; summarizes input parameters; creates a truth table for rating wireability and thermal requirements; and provides cost sensitive parameters.

    摘要翻译: 对于多层芯片载体模块,计算机程序接收大量多个模块设计参数,并提供设计的图形表示以及评估模块可线性的文本文件(包括管芯焊盘位置),将每个管芯焊盘附接到其BGA焊盘 ,和网络交叉; 并量化再分配层的数量; 总结输入参数; 创建一个用于评估线性和热要求的真值表; 并提供成本敏感的参数。