【选型】力特SMF特快熔保险丝046702.5NR用于电子显微镜,0603表贴封装满足小型化设计
电子显微镜是一款用于芯片晶圆缺陷检测的设备,为避免其内电流源因负载短路异常造成燃烧风险,一般需要在电流源输入加一款快熔保险丝,选型因素参考如下:
1、考虑空间结构限制,需要选择小体积表贴保险丝设计,如0603或0402表贴封装;
2、电性规格:市面上一般选择耐压32Vdc,额定电流2.5A快熔保险丝设计;
3、高I2t热熔值,可承受高浪涌电流冲击;
针对如上的设计需求,本文推荐LITTELFUSE推出的SMF特快熔保险丝046702.5NR,0603表贴封装,最大额定工作电压32VAC/DC,在环境温度25℃条件下,额定工作电流2.5A,分断电流能力达35A,工作温度范围-55℃~90℃,通过UR、CSA认证,典型电性参数参考如下图1所示。
图1:Littelfuse快熔保险丝046702.5NR典型电性参数
推荐理由如下:
1、采用0603表贴封装,满足小型化设计需求;
2、采用合金元件构造设计,相比陶瓷或玻璃管0603同封装保险丝具有更高的涌流耐受性;
3、市面上有成熟的应用,产品性能得到验证;
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,Littelfuse推出的SMF特快熔保险丝046702.5NR,采用0603表贴封装,满足小型化设计需求,非常适用于电子显微镜。
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