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DOWO SMDJ51CA
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DOWO SMDJ51CA
- Type
- DOWO
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DOWO
- Electronic Component
- SMDJ51CA
- Electronic Component
- 1
- Package
- DO-214AB
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.409g
- Electronic Component
- 1
- Electronic Component
- BM0264548685
- Voltage
- 82.4V
- Current(Ir)
- 2uA
- Voltage(VBR)
- 56.7V
- 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.
SMDJ51CA 双向 TVS 晶片（DO-214AB）产品概述
一、产品简介
SMDJ51CA 是东沃（DOWO）推出的一款高能量、快速响应的双向瞬态电压抑制器（TVS），采用玻璃钝化芯片工艺，封装为 DO-214AB（SMBJ）。该器件专为保护直流与交流电源轨及敏感电子设备免受雷击、浪涌和开关瞬变等脉冲能量冲击而设计，具有出色的钳位能力与极低的泄漏电流。
二、主要电气参数
- 极性：双向
- 反向截止电压 Vrwm：51 V
- 击穿电压 VBR：56.7 V
- 钳位电压（Ipp 条件下）：82.4 V
- 峰值脉冲电流 Ipp（10/1000 μs）：36.41 A
- 峰值脉冲功率 Ppp（10/1000 μs）：3000 W（重复率/占空比 0.01%）
- 反向电流 Ir：2 μA（在 Vrwm 条件下）
- 封装：DO-214AB（SMBJ）
- 特性：玻璃钝化芯片、低泄漏、快速响应、RoHS 合规
三、性能亮点
- 高能量承受能力：在 10/1000 μs 波形下能承受高达 3000W 的峰值脉冲功率，适合防护雷击与工业浪涌。
- 低钳位电压：82.4V 的钳位值在 51V 额定系统下能有效限制过电压，减少下游设备应力。
- 低泄漏与稳定性：2 μA 的低反向泄漏有助于降低待机损耗并保持系统稳定。
- 玻璃钝化工艺带来更高的可靠性与更长的寿命，尤其适合恶劣环境。
四、典型应用场景
- 48V 通信电源与 PoE 系统的输入保护
- 工业控制设备、PLC、门机、变频器等电源瞬态防护
- 电源模块与配电总线的浪涌保护
- 测试与测量设备、电池管理系统（BMS）和其它对瞬变敏感的电子模块
五、使用与布局建议
- 将 TVS 器件靠近入线端或被保护器件放置，尽量缩短走线以减小寄生电感。
- 在 DO-214AB 封装底部及引脚周围布置足够铜箔以增强散热能力；必要时增加热过孔连至内部或底层铜箔。
- 本器件为脉冲功率等级设计，禁止在钳位状态下长期承载直流或高占空比能量，应用于瞬态冲击的吸收。
- 若系统需频繁承受大能量脉冲，建议评估并采用并联或更高等级的保护方案以延长寿命。
六、可靠性与合规
SMDJ51CA 使用玻璃钝化芯片，具有优越的长期稳定性与抗环境能力。产品符合 RoHS 要求，适合严格的环保与制造规范。重复率（占空比）建议不超过规格 0.01%，以确保长期可靠工作。
如需样品、详细典型曲线或在特定系统（如 48V 直流总线、工业现场）中的工作点建议，可提供进一步的浪涌仿真与选型支持。
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