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SMF14A是晶导微电子推出的单向瞬态抑制二极管(TVS),采用SOD-123FL小型表面贴装封装,专为电子电路中的静电放电(ESD)、浪涌过压防护设计,具备宽温适用、低漏电流、高脉冲耐受能力等特点,可满足消费电子、工业控制、通信设备等领域的防护需求。
SMF14A的电气参数经过严格测试,关键指标直接决定防护能力:
反向截止电压(Vrwm):14V
器件正常工作时反向可承受的最大直流电压(无击穿),需与电路工作电压匹配(如电源电压≤14V场景适用),静态下不漏电、不影响电路功能。
击穿电压(Vbr):15.6V(@Ir=1uA)
反向漏电流达1uA时的电压阈值,是器件进入击穿状态的标志;与Vrwm形成1.6V裕量,避免电路正常波动触发误击穿。
钳位电压(Vc):23.2V(@Ipp=8.6A)
峰值脉冲电流(8.6A)下的最大电压值,是防护核心指标——若后端IC耐受电压≥23.2V,可有效避免过压损坏。
峰值脉冲功率(Ppp):200W
单次10/1000μs标准脉冲下可承受的最大功率,结合Ipp=8.6A,满足多数工业/消费场景的浪涌防护需求(如雷击、静电放电)。
反向漏电流(Ir):1uA(@Vrwm=14V)
静态漏电流极小,不会导致电路功耗增加或信号失真,适合低功耗设备(如便携式设备、传感器模块)。
工作温度范围:-55℃~+150℃
宽温设计覆盖工业级(-40℃~+85℃)、汽车部分场景(引擎舱周边),适应高低温恶劣环境。
SOD-123FL封装为小型表面贴装形式,尺寸约1.6mm×0.8mm×0.5mm(典型值),具备:
晶导微电子SMF14A符合:
综上,SMF14A是性能均衡的单向TVS二极管,可有效解决电路瞬态过压问题,适配多领域防护需求,是工程师设计的可靠选择。
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