【选型】国产快熔保险丝SF301A3.15用于低速无人机，采用2410表贴封装，满足小型化需求

时间： 2022-07-05 来源：世强

技术问答

为避免低速无人机的短波接收机电源输入因负载短路异常造成燃烧风险，建议在电源输入加一颗快熔保险丝做过流保护设计，市面上一般选择125Vdc/3.15A的保险丝设计，同时因空间结构限制，需要小尺寸表贴保险丝设计。

针对如上的设计需求，推荐电安科技快熔断保险丝 SF301A3.15，最大额定工作电压125Vac/dc，额定工作电流3.15A，分断电流能力高达100A@125Vac/dc，工作温度范围-55℃~125℃，典型电性参数参考如下图1所示。

图1：电安科技快熔保险丝SF301A3.15典型电性参数

推荐理由如下：

1、分断电流能力达100A，具有出色的安全切断电流能力；

2、采用2410表贴封装，典型封装尺寸6.1×2.5mm，可满足小型化设计需求；

3、常温25℃条件下的正常冷却阻值低至0.030Ω，自损耗很小；

4、具有良好的供货交期，可以快速支持样品和量产服务。

综上所述，电安科技快熔断保险丝SF301A3.15符合客户设计需求，非常适用于低速无人机的短波接收机电源输入。

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