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BORN SMBJ70CA
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BORN SMBJ70CA
- Type
- BORN
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BORN
- Electronic Component
- SMBJ70CA
- Electronic Component
- 1
- Package
- DO-214AA(SMB)
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.188g
- Electronic Component
- 1
- Electronic Component
- BM0229259053
- Voltage
- 113V
- Current(Ir)
- 1uA
- Voltage(VBR)
- 77.8V
- Electronic Component
- Electronic Component
- Electronic Component
- 3000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMBJ70CA 产品概述
一、产品简介
SMBJ70CA 是 BORN（伯恩半导体）出品的一款双向瞬态电压抑制二极管（TVS），用于抑制瞬态浪涌与静电放电（ESD）。器件采用 DO-214AA（SMB）封装，适合表面贴装应用，专为需要 70V 级别稳压/钳位保护的直流或交流线路设计。
二、主要性能参数
- 极性：双向（Bidirectional），对正负极性浪涌均有效。
- 反向持续工作电压 Vrwm：70 V（建议系统工作电压≤此值）。
- 击穿电压（Vbr）：典型 77.8 V。
- 钳位电压（Vclamp）：113 V（在 10/1000 μs 工况下测得）。
- 峰值脉冲电流 Ipp：5.3 A（10/1000 μs 波形）。
- 峰值脉冲功率 Ppp：600 W（按 10/1000 μs 脉冲标准）。
- 反向漏电流 Ir：约 1 μA（在 Vrwm 条件下）。
- 类型：TVS / ESD 保护二极管，型号 SMBJ70CA。
三、性能特点与优势
- 高能量吸收能力：600 W（10/1000 μs）可有效吸收较长脉冲宽度的浪涌能量，适用于电源与通信线路的浪涌防护。
- 钳位电压低：在规定脉冲下钳位于约113 V，可将被保护电路的过压幅度压低至可接受范围。
- 低漏电流：在工作电压下仅约1 μA，有利于降低静态功耗，不影响高阻电路。
- 双向保护：无需区分极性，适用于交流或两极性脉冲环境（如数据线、交流电源）。
四、典型应用场景
- 工业电源保护（直流/低频交流系统）
- 电机驱动和传感器接口的浪涌抑制
- 通信端口、防雷/浪涌保护模块（SPD）
- 汽车电子次级保护（需注意汽车级温度和认证）
- 电源适配器、逆变器以及其他需承受雷击或开关瞬变的设备
五、选型与布局建议
- 工作电压匹配：选择本型号时，系统最大正常工作电压应低于 Vrwm（70 V），且留有余量以避免常态触发。
- 能量匹配：若预期浪涌能量高于 600 W（10/1000 μs）对应值，应选更高功率或并联多只器件（并联需考虑电流分配问题）。
- PCB 布局：将 TVS 放置于保护对象尽量近侧，走线最短以减小串联感抗；大电流回流路径应配宽铜箔与过孔以利散热。
- 散热与可靠性：在高脉冲应用中注意热能集中，必要时采用散热铜箔或加装散热结构；长期可靠性按厂方数据表的温度循环与冲击测试为准。
六、注意事项
- 虽为双向器件，但用于直流电源时需评估反向冲击特性。
- 详细的温度系数、封装机械尺寸、典型波形和规范测试条件请参考厂方完整数据表与应用说明。
- 在关键或严苛环境（如汽车级、通信基站）建议确认器件是否满足相应认证与额外可靠性要求。
总结：SMBJ70CA 提供了在 70V 级别系统中高能量、低漏电流的双向浪涌保护方案，适用于多种工业与消费类应用。选用时结合系统工作电压、预期浪涌能量与 PCB 布局可获得可靠的保护效果。
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