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DOWO SMDJ54CA
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DOWO SMDJ54CA
- Type
- DOWO
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DOWO
- Electronic Component
- SMDJ54CA
- Electronic Component
- 1
- Package
- SMC(DO-214AB)
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.43g
- Electronic Component
- 1
- Electronic Component
- BM0264342810
- Operating Temperature
- 55℃~+150℃
- Voltage
- 87.1V
- Current(Ir)
- 2uA
- Voltage(VBR)
- 60V
- 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.
SMDJ54CA 双向 TVS 瞬态抑制二极管（DOWO）
一、产品概述
SMDJ54CA 是 DOWO（东沃）出品的双向 TVS（瞬态电压抑制器），采用玻璃钝化芯片工艺，封装为 SMC（DO-214AB）。针对工业级浪涌和瞬态过电压保护设计，能在电源线、信号线及通讯接口上快速钳位抑制高能脉冲，保护后端敏感器件免受破坏。
二、主要电气参数
- 极性：双向
- 反向截止电压 Vrwm：54 V
- 击穿电压 VBR（标称）：60 V
- 钳位电压 Vc（Ipp）：87.1 V
- 峰值脉冲电流 Ipp（10/1000 μs）：34.44 A
- 峰值脉冲功率 Ppp（10/1000 μs）：3000 W
- 反向泄漏电流 Ir：≤ 2 µA（常温）
- 工作温度范围：-55 ℃ 至 +150 ℃
注：脉冲参数基于 10/1000 μs 波形，重复率（占空比）0.01%。
三、关键特性与优势
- 玻璃钝化芯片，可靠性高、寿命长、对环境应力有更好抵抗。
- 高达 3000 W 的峰值脉冲功率能力，适合重型浪涌场合。
- 低漏电流（2 µA），在静态工作下对系统影响小。
- 钳位能力优秀，快速响应（亚微秒级），能有效限制过电压幅值。
- 同系列提供单向/双向型号，易于按应用选择。
- 符合 RoHS，适用于对环保有要求的设计。
四、典型应用场景
- 直流/交流电源总线保护（48 V 系统、通信电源等）
- 电力设备、逆变器、开关电源的浪涌防护
- 通信接口（以太网、串口等）和工业自动化控制器的瞬态保护
- 汽车电子（非车规级应确认）和户外设备的雷击/浪涌防护
五、封装与热机械要点
- 封装：SMC（DO-214AB），适合表面贴装工艺。
- 封装有良好散热路径，建议在 PCB 设计时考虑足够的铜箔散热区和热通道，必要时并联多个器件以提高承受能量。
- 波峰焊与回流焊工艺兼容，但焊接曲线应按元件厂家建议控制以保证可靠性。
六、设计选型与使用注意
- 选型时确认工作电压 Vrwm 与系统正常工作电压间的裕量，避免在常态下触发钳位。
- 对于重复性或持续性冲击场合，应参考能量累积与热循环特性，必要时选用更高功率或并联器件。
- 双向器件用于交流或双向脉冲场合，单向器件更适合单向直流保护。
- 此类 TVS 能抑制瞬态脉冲，但不能替代过流保护器（熔断器、PTC 等），应与其他保护元件配合使用。
七、合规与可靠性
- 产品符合 RoHS 要求，玻璃钝化提升长时间可靠性，适用于工业环境和宽温区工作（-55 ℃ 至 +150 ℃）。
- 在关键应用中建议结合实际测试（浪涌、电压击穿、热循环）验证长期可靠性与钳位性能。
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