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DOWO SMCJ18CA
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DOWO SMCJ18CA
- Type
- DOWO
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DOWO
- Electronic Component
- SMCJ18CA
- Electronic Component
- 1
- Package
- SMC(DO-214AB)
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.371g
- Electronic Component
- 1
- Electronic Component
- BM0264866269
- Voltage
- 29.2V
- Electronic Component
- IEC 61000-4-2
- Current(Ir)
- 1uA
- Voltage(VBR)
- 20V
- Electronic Component
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMCJ18CA（DOWO 东沃）产品概述
一、产品简介
SMCJ18CA 为 DOWO（东沃）出品的双向瞬态抑制二极管（TVS），采用玻璃钝化芯片工艺，封装为 SMC（DO-214AB）。专为承受大能量脉冲和快速抑制瞬态过压而设计，适用于需抗雷击、抗浪涌及静电放电保护的电源与信号线保护场合。
二、主要电气参数
- 反向截止电压 Vrwm：18 V（双向器件，为对称工作点）
- 击穿电压 VBR：20 V
- 钳位电压（Ipp 条件下）：29.2 V
- 峰值脉冲电流 Ipp：51.37 A（10/1000 μs 波形）
- 峰值脉冲功率 Ppp：1500 W（10/1000 μs，重复率/占空比 0.01%）
- 反向漏电流 Ir：≤1 μA
- ESD 抗扰等级：符合 IEC 61000-4-2，空气放电 ±15 kV，接触放电 ±8 kV
三、关键特性与优势
- 玻璃钝化芯片，确保长期稳定性与低漏电。
- 极快响应时间，可在瞬态出现的初期立即夹紧电压，保护下游电路。
- 出色的钳位能力，在指定脉冲条件下将过压控制在可接受范围（钳位约 29.2 V）。
- 高能量承受能力（1500 W，10/1000 μs），适合雷击浪涌和工业脉冲环境。
- 双向结构便于交流或两极性信号线路直接保护。
- 符合 RoHS，适用于环保要求场合。
四、典型应用场景
适用于通信基站、工业控制电源、配电箱输入端、楼宇自控、电源适配器、充电桩前端、数据/信号接口及其它需高能量脉冲防护和 ESD 抗扰的场合。
五、封装与可靠性建议
SMC（DO-214AB）封装利于散热与 PCB 固定。建议在 PCB 设计时：
- 尽量缩短保护器到被保护点的走线，减小串联电感。
- 在器件底部留足铜箔散热区并与地平面良好热连接以利散热。
- 遵循器件最大重复功率和占空比（0.01%）限制，避免连续高能量脉冲导致器件过热。
六、使用注意事项
- 本器件能承受高能脉冲，但不适合作为替代性的稳压器长期使用。
- 在高温或频繁脉冲环境下应评估热管理与寿命影响。
- 选型时注意系统中可能出现的最大脉冲电流与能量，留有安全余量。
- 焊接与储存按制造商推荐的工艺参数执行，以保证可靠性。
SMCJ18CA 以其高能量承受力、低泄漏与快速响应特性，是对中高能瞬态干扰提供可靠保护的优选元件。若需进一步的典型曲线、封装图或应用参考，请联系供应商获取详细数据手册。
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