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Brightking(台湾君耀)SMCJ9.0CA是一款专为低压电路设计的瞬态抑制二极管(TVS),采用SMC(DO-214AB)表面贴装封装,具备宽温度范围、高抗浪涌能力等特点,是各类电子设备过压防护的常用器件。
SMCJ9.0CA属于TVS二极管中的"瞬态浪涌吸收型"器件,核心作用是快速响应电路中的瞬态过压脉冲,将电压钳位在安全范围内,避免后端敏感电子元件(如IC、传感器、电容等)因过压损坏。其设计针对9V以下工作电压的电路,平衡了防护性能与电路兼容性,是消费电子、工业控制等领域的高性价比防护方案。
该器件的核心参数直接决定了防护能力,需重点关注以下指标:
反向截止电压(Vrwm):9V
是器件正常工作时允许施加的最大反向电压,此时器件处于截止状态,漏电流极小,不影响电路正常运行。需注意:电路工作电压需≤9V,避免器件反向导通。
击穿电压(Vbr):10V
反向电压达到此值时,器件开始雪崩击穿,进入防护工作状态,此值略高于Vrwm,保证正常工作与防护的切换可靠性。
钳位电压(Vc):15.4V
是器件承受峰值脉冲电流时的电压上限,也是实际防护的关键值——需确保被保护元件的最大耐压高于15.4V,否则仍可能损坏。
峰值脉冲电流(Ipp):97.4A
单次10/1000us浪涌波形下,器件能承受的最大脉冲电流,反映抗大电流冲击能力。
峰值脉冲功率(Ppp):1.5kW(10/1000us)
浪涌功率能力,10/1000us是行业标准浪涌波形(上升沿10μs,半峰值持续1000μs),此参数需匹配实际应用中的浪涌能量需求。
反向漏电流(Ir):10μA
Vrwm下的反向漏电流,数值极小,不会对电路功耗造成明显影响。
工作温度范围:-65℃~+150℃
宽温度范围覆盖了工业级(-40~+85℃)、汽车级(部分场景)及极端环境,适应不同应用场景的温度变化。
SMCJ9.0CA采用SMC(DO-214AB)表面贴装封装,尺寸小巧(约3.2×2.5×1.6mm),适合高密度PCB设计,支持自动化贴装,焊接可靠性高。
Brightking(台湾君耀)是全球知名的防护器件制造商,产品符合RoHS、REACH等环保标准,一致性好,在电子防护领域拥有成熟的技术积累,被广泛应用于工业、消费、通信等行业。
SMCJ9.0CA的参数特性使其适用于以下场景:
该器件凭借稳定的防护性能与灵活的应用场景,成为低压电路过压防护的经典选择,适合各类需要高可靠性防护的电子设备设计。
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