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SMDJ33CA是伯恩半导体(BORN)针对电子电路瞬态过压防护需求推出的双向瞬态抑制二极管(TVS)。作为核心防护器件,它的核心功能是在电路遭遇雷电浪涌、开关瞬态或静电放电时,快速导通并钳位电压至安全范围,避免后端敏感元件(如IC、传感器)被击穿或烧毁。
其核心属性包括:
SMDJ33CA的电气参数精准匹配防护需求,核心参数及意义如下:
正常工作时允许施加的最大反向电压,在此电压下器件处于截止状态,反向漏电流极小(仅1μA),不会干扰电路正常功能。
浪涌发生时,器件快速导通后将电压钳位至该值,远低于多数敏感元件的损坏阈值(通常≥60V),是防护效果的核心指标。
“10/1000μs”是浪涌波形的标准测试条件(电流波上升时间10μs,半峰值持续时间1000μs),56.3A的耐受能力可覆盖多数工业/通信场景的浪涌冲击。
由钳位电压与脉冲电流共同决定(P=V×I),3kW功率耐受度验证了器件可承受的浪涌能量上限,适配高功率浪涌场景。
器件从截止转为导通的临界电压,比反向截止电压高7.6V,确保正常工作时不导通,仅在浪涌电压超过该值时快速响应(响应时间≤1ns)。
正常工作状态下的反向电流极低,不会增加电路功耗或干扰信号,保障电路稳定性。
SMDJ33CA采用SMC(DO-214AB)表面贴装封装,具备以下优势:
伯恩半导体(BORN)是国内专注功率半导体及防护器件的专业厂商,SMDJ33CA的品质管控严格遵循国际标准:
SMDJ33CA的防护能力覆盖多领域,核心应用包括:
SMDJ33CA凭借精准电压钳位、大脉冲耐受、宽温范围及双向便捷安装,成为电子设备过压防护的可靠选择。它可有效抵御瞬态浪涌对敏感元件的损坏,提升设备稳定性与使用寿命,广泛适配工业、汽车、通信等多领域需求。
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