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SMF64CA是晶导微电子推出的双向瞬态抑制二极管(TVS),属于SMF系列小功率防护器件,专为电路中的瞬态过压(如静电、雷电浪涌、开关冲击)设计,具备体积小、响应快、钳位精准等核心优势,适配消费电子、通信设备等高密度PCB场景。
SMF64CA为单路双向TVS,核心功能是通过“快速击穿-钳位电压-泄放能量”的机制,保护后端敏感元器件(如IC、传感器、接口芯片)免受过压损坏。产品采用表面贴装封装,无需区分正负极,简化了电路设计与生产流程,是中低压电路防护的高性价比选择。
SMF64CA的参数经过严格校准,适配多数12V~60V稳态电路的防护需求,关键指标说明如下:
是器件在反向偏置下长期可承受的最大直流电压,此时TVS处于截止态,漏电流极小(仅1μA),不会干扰电路正常工作。该参数需匹配电路稳态电压(如电源输出、信号幅值),确保器件“不主动导通”。
是TVS从截止态转为导通态的临界电压。当线路电压超过此值时,器件快速击穿(响应时间ns级),启动过压防护。击穿电压与Vrwm的差值(约14.6V)设计合理,避免了“软击穿”或过度提前导通的问题。
是器件在峰值脉冲电流下的最大端电压(测试条件:1.7A脉冲、10/1000μs波形)。钳位电压是防护核心——需低于后端负载的最大耐受电压(如芯片耐压),确保负载在过压时不被击穿。
截止态漏电流极小,不会增加电路功耗或影响信号完整性,确保稳态工作的稳定性。
SMF64CA采用SOD-123FL表面贴装封装,具备以下特点:
SMF64CA的参数与封装特性使其适配多领域中低压防护,典型应用包括:
晶导微电子是国内功率半导体领域的成熟厂商,SMF64CA经过严格可靠性测试:
产品响应速度达ns级,能在瞬态过压发生的极短时间内启动防护,有效保护敏感元器件。
SMF64CA凭借高性价比、小体积与可靠防护能力,成为中低压电路瞬态过压防护的优选器件,适配多种终端产品的设计需求。
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WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
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