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BAV70,235是Nexperia(安世半导体)推出的一款高速开关双二极管,采用1对共阴极配置,专为高频切换、紧凑型电路设计,凭借低反向恢复时间、小封装密度及稳定的电气特性,广泛应用于消费电子、通信及工业控制等领域。
作为安世高速二极管系列的经典型号,BAV70,235针对“高速切换+小空间集成”需求优化:采用共阴极双二极管结构(两个二极管共享阴极),支持两路独立或同步切换;基于安世成熟的硅基工艺,平衡了开关速度与功耗,适配从低功耗便携式设备到中等频率通信模块的多元场景。
BAV70,235的电气参数精准匹配高速应用需求,核心参数及实际意义如下:
正向压降1.25V(@150mA),属于常规开关二极管的典型范围,既保证导通时的低损耗(相比部分高压二极管压降更低),又避免因压降过小将信号钳位过度,适合信号调理、逻辑电平切换场景。
直流反向耐压(Vr)达100V,可覆盖中等电压场景(如12V/24V系统的反向保护);反向漏电流(Ir)仅500nA(@25℃),低漏电流特性使其在低功耗电路中(如电池供电设备)可减少静态损耗,提升续航。
反向恢复时间仅4ns,是该产品的核心优势——普通整流二极管Trr通常在几十ns至几百ns,而BAV70,235的超短Trr可大幅降低高频切换时的开关损耗,避免信号失真,尤其适合10MHz以上的脉冲电路、射频前端切换。
BAV70,235采用SOT-23封装(3引脚表面贴装),尺寸约为2.9×1.6×1.1mm,属于小型化封装范畴:
BAV70,235的特性使其适配以下场景:
综上,BAV70,235凭借高速开关、小封装及稳定电气特性,成为紧凑型高速电路设计的常用选择,尤其适合对空间、速度及功耗有平衡需求的应用场景。
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