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3.0SMBJ58CA是伯恩半导体(BORN) 推出的单通道瞬态抑制二极管(TVS),采用DO-214AA(SMC)表面贴装封装,专为低压电路的瞬态过压保护设计,可有效抑制雷电、静电放电(ESD)、开关浪涌等瞬态脉冲对敏感电子元件的损坏,是工业控制、通信设备、消费电子等领域的常用保护器件。
该产品的电气参数直接决定其保护能力,关键参数及实际意义如下:
额定值为58V,指TVS在正常工作状态下(无瞬态脉冲时),可长期承受的最大反向电压而不发生击穿。电路设计时需确保电源或信号的正常工作电压不超过58V,避免误触发保护。
额定值为60V,是TVS反向击穿的电压阈值(略高于Vrwm)。当电路出现瞬态过压且电压超过60V时,TVS快速导通,将过压能量泄放至地,保护后端电路免受过压冲击。
额定值为85V,是TVS导通后能将电路电压钳位的最高值(在峰值脉冲电流下)。该参数直接反映保护效果:85V与58V的差值(27V)处于合理范围,既保证快速响应,又避免钳位电压过高对后端元件造成二次损伤。
额定值为500A@8/20μs,其中“8/20μs”是国际标准浪涌波形(前沿8μs、半峰值持续20μs)。该参数表明产品可承受最大500A的峰值浪涌电流,能有效应对中等强度的雷电或开关浪涌。
额定值为3kW@10/1000μs,“10/1000μs”是长脉冲浪涌波形(前沿10μs、半峰值持续1000μs)。3kW的峰值功率覆盖了多数低压电路的浪涌能量需求,可保护电源、接口等关键部位。
额定值为1μA(在Vrwm下),是TVS反向截止时的漏电流。极低的漏电流确保产品在正常工作时功耗极低,适合对功耗敏感的电子设备(如便携式仪器、低功耗通信模块)。
3.0SMBJ58CA采用DO-214AA封装(俗称SMC封装),具有以下优势:
结合产品参数,3.0SMBJ58CA适用于以下场景:
伯恩半导体(BORN)是国内专注于保护器件的知名厂商,3.0SMBJ58CA具备以下可靠性优势:
该产品凭借平衡的保护性能、小型化封装及高可靠性,成为低压电路瞬态保护的高性价比选择。
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