【应用】金属弹片B5G-25X45X060可用于控制器，具有屏蔽外部信号干扰和接地的作用

时间： 2021-10-02 来源：世强

技术问答

控制器上的PBC板在封装后存在各类电子元器件，这类电子器件在使用时要避免静电的长时间积累，防止对器件造成击穿的效果，降低原器件的可靠性；而大多情况下再使用过程中，PCB上会不可避免的产生静电，所以需要及时将静电导出。

LAIRD的SMD垫片 B5G-25X45X060采用高强度、高导电的铜铍合金制成，材质相比传统同合金密度小，质地轻盈，热膨胀系数9.7x10^-6m/m/℃（20℃～200℃），基本不用担心环境变化导致的热胀冷缩问题，屈服强度（141-152Kgf）和硬度（410-435HV）参数都处于性能优异的范围。

B5G型号弹片应用过程中的装配方式参考下图，在贴片前注意清理PCB表面（可参考易力高清洗剂），清理完之后用锡膏焊接粘贴区域，然后把弹片固定在需要导出电荷的部位，具体数量根据实际测试情况确定，本案例中使用6片进行屏蔽，贴片完成后盖上上盖即可，示意图参考右下图；PCB上的静电经过金属弹片的导出使外壳和PCB形成电荷的连续体，起到屏蔽外部信号干扰的作用，并且起到接地的作用；

此类金属弹片还可采用SMT机卷带包装，生产速度快，省力，与FOF相比具有更好的接触可靠性和耐盐雾和热冲击性，并且支持手持设备方面的应用。

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S,8402-0108-XX,843X-2XXX-X,8911-0145-XX,8414-01XX-65,8404-0115-XX,8414-01XX-64,4194,8560-0116-XX,8550,8103-0118-40,4198,4199,8907-0180-XX,8403-01XX-55,8403-01XX-54,8560-0311-XX,8403-01XX-52,4192,8902-0150-XX,8401-0115-XX,8403-01XX-50,SNN65-HXP,8860-0125-300-XX,8408-0245-XX,3027-235,8563-0161-XX,8905-0137-XX,8910-0140-XX,8904-0168-XX,8408-0209-XX,8403-0101-50,8409-0158-50,8403-01XX-60,8913-0140-XX,8403-01XX-61,8415-0106-64,8909-0105-XX,8560-0114-XX,8902-0117-XX,8563-0116-XX,8404-0105-XX,BMI-S-210-F,8401-0117-XX,M83528/009X002,M83528/009X001,8904-0156-XX,SNC70,8864-0231,8516-0205-XX,M83528/009X005,8560-0435-XX,M83528/009X004,8890 0001 XX A,8563-0071-XX,M83528/009X003,M83528/009X009,M83528/009X008,8409-0168-50,8904-0110-XX,M83528/009X007,8408-0257-XX,3078-500,8864-3515,8563-0254-XX,8910-0105-XX,8415-0104-64,8902-0140-XX,8907-0101-XX,8403-0109-XX,8300-0038-44,8906-0109-XX,8563-0095-XX,8103-0108-40,8911-0135-XX,8860-0032-300-

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