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DOWO 1.5KE440CA
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DOWO 1.5KE440CA
- Type
- DOWO
- Minimum package
- 1250 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DOWO
- Electronic Component
- 1.5KE440CA
- Electronic Component
- 1
- Package
- DO-201AD
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.914g
- Electronic Component
- 1
- Electronic Component
- BM0264866278
- Operating Temperature
- 55℃~+150℃
- Voltage
- 602V
- Current(Ir)
- 1uA
- Voltage(VBR)
- 418V
- 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.
1.5KE440CA 产品概述
一、产品简介
1.5KE440CA 是 DOWO（东沃）生产的一款高能脉冲瞬态电压抑制器（TVS），采用玻璃钝化芯片工艺，封装为 DO-201AD。该器件为双向结构，专为吸收瞬态过压、保护电路免受雷击、浪涌及开关瞬变等冲击而设计，峰值脉冲功率能力高达 1500W（10/1000μs 波形，重复率 0.01%），在高能脉冲保护场合表现优异。
二、主要参数
- 极性：双向
- 反向截止电压 Vrwm：376.2 V
- 击穿电压 VBR：418 V
- 钳位电压 Vc：602 V（在规定 Ipp 下）
- 峰值脉冲电流 Ipp：2.47 A
- 峰值脉冲功率 Ppp：1500 W（10/1000 μs）
- 反向电流 Ir：1 μA（常温静态泄漏）
- 工作温度范围：-55 ℃ ～ +150 ℃
- 封装：DO-201AD（轴向引线）
- RoHS 合规
三、性能特点
- 玻璃钝化芯片：提高 PN 结稳定性和长期可靠性，适合恶劣环境下长期使用。
- 高功率吸收能力：1500W 峰值功率可在高能脉冲下提供有效的能量分散，保护下游元件。
- 低泄漏电流：静态反向电流仅 1 μA，适合对静态功耗敏感的电路。
- 快速响应：TVS 器件本质上具备极快的响应时间，可在瞬态发生时迅速钳位电压，抑制突发过压。
- 出色钳位能力：在规定脉冲工况下可将浪涌电压限制在约 602V，降低被保护电路承受的应力。
- 双向保护：适用于交流或可正负反向浪涌的回路，简化电路设计。
四、典型应用场景
- 工业电源与配电系统的浪涌保护（SPD）
- 交流供电线路、逆变器输出端和电机驱动器的瞬态抑制
- 电力电子设备、变频器、太阳能逆变器等对高能浪涌有防护需求的场合
- 通信基站、配电箱、配套控制器及其它需要双向过压保护的设备
五、封装与可靠性
DO-201AD 轴向封装便于自动化贴装或手工焊接，机械强度好，适合板端或线端保护模块。玻璃钝化工艺结合高温等级（最高工作温度 150 ℃）确保长期热稳定性与潮湿鲁棒性。器件符合 RoHS 指令，满足环保要求。
六、使用建议与注意事项
- 确认实际系统中的最大工作电压与 Vrwm 匹配；长期工作电压接近 Vrwm 会增加击穿风险，应留有裕量。
- 钳位电压 602V 为在规定脉冲下测得的典型值，实际电路中应考虑串联电阻、寄生电感等因素对波形的影响。
- 安装时注意良好散热与机械固定，避免引脚应力过大导致封装损伤。
- 对于重复高能冲击场合，应评估器件累积能量承受能力并设计合理的并联/串联保护策略。
七、总结
1.5KE440CA 是一款性能均衡、可靠性高的双向 TVS，适用于需要高功率瞬态抑制的工业、能源及电力电子场景。其玻璃钝化工艺、低泄漏与快速响应特性，使其在复杂工作环境中能为下游电路提供稳健的过压保护。在选型和布置时，请根据系统最大工作电压、预期冲击能量及散热条件做出合理设计。
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