【应用】国产电安科技快熔圆筒保险丝CA434系列用于应力检测仪，最大额定分断能力20KA@125VAC/DC

时间： 2023-03-22 来源：世强

技术问答

在工业生产中，应力与应力集中是金属设备、容罐容器等承载结构件发生故障的关键根源。承载结构件由于加工制造、塑造形变造成的残余应力以及在使用过程中产生应力集中都会使结构件的机械特性发生改变，从而对生产制造、设备稳定持久运行产生较大的影响，因此应力的检测一直都是研发的热点。

某客户采用衍射法的应力测试方法设计应力检测仪，该款应力检测仪主要能精确分析各种沉积薄膜和衬底引起的表面应力，从而应用在晶圆应力测量上；某客户在应力检测仪电源输入端口设计中需要电压220VAC、电流40A的快熔保险丝，用来防止出现直通短路等情况时，保险丝可以及时断开，防止产生二次损坏造成更大的损失，经过与客户的沟通确认，最终确定了电安科技 CA434系列中的CA434A040，下图1为电安科技快熔圆筒保险丝CA434系列中的CA434A040的应用框图：

图1 电安科技快熔圆筒保险丝CA434A040应用框图

其外部封装及电流和时间曲线如下：

客户采用了电安科技快熔圆筒保险丝CA434A040，具有以下特点：

（1）分断能力覆盖了100A@250VAC 1500A@250VAC/DC 10KA@250VC/DC 10KA@125VAC/DC 20KA@125VAC/DC的产品，满足大部分产品设计输入的分断需求，大大提高保险丝在复杂的电网环境工作的可靠性；

（2）额定电流大，电流范围为0.375A-40A，可满足大电源的输入防护需求；

（3）封装采用6mm*32mm带引线和不带引线封装，兼容市场上保险丝，可直接替换其他品牌保险丝，国产化器件，性价比和交期好；

综上所述，在该客户的方案设计中，考虑到客户电压220VAC、电流40A的快熔保险丝的要求，并结合到该芯片已经在市场上也经过了长期的验证，性能、功能等方面都较为出色，选用电安科技快熔圆筒保险丝CA434系列中的CA434A040是一个和理想的设计与选择。

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