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BORN SMDJ40CA
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BORN SMDJ40CA
- Type
- BORN
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BORN
- Electronic Component
- SMDJ40CA
- Electronic Component
- 1
- Package
- SMC(DO-214AB)
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.32g
- Electronic Component
- 1
- Channel Count
- Electronic Component
- Electronic Component
- BM0229906781
- Operating Temperature
- 55℃~+150℃
- Voltage
- 64.5V
- Current(Ir)
- 2uA
- Voltage(VBR)
- 44.4V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMDJ40CA 产品概述
一、概述
SMDJ40CA 是 BORN（伯恩半导体）出品的一款双向瞬态抑制二极管（TVS），采用 SMC（DO-214AB）封装，面向工业级瞬态浪涌保护。该器件专为抑制外部浪涌、电气过冲与瞬态过压事件设计，能够在极短时间内吸收大能量脉冲，保护下游电路免受损坏。
二、主要参数
- 极性：双向（Bidirectional）
- 额定反向截止电压 Vrwm：40 V
- 击穿电压 Vbr：44.4 V（典型测量点）
- 钳位电压 Vc（Ipp）：64.5 V（在峰值脉冲电流下）
- 峰值脉冲电流 Ipp：46.5 A
- 反向电流 Ir：≈2 μA（常温条件下）
- 通道数：单路
- 工作温度范围：-55 ℃ ～ +150 ℃
- 封装：SMC（DO-214AB）
- 类型：TVS（二极管型瞬态抑制器）
三、特性与优势
- 双向结构：适用于交流或可极性反向的电源/信号线路，可在正/负向瞬变均能钳位保护。
- 高浪涌吸收能力：在指定脉冲条件下能承受较大峰值电流（Ipp 46.5A），适合常见的雷击、开关瞬变应力。
- 低漏电流：Ir 仅约 2 μA，适用于对待机功耗敏感的系统。
- 宽温度区间：-55 ℃ 到 +150 ℃，适合工业与恶劣环境应用。
- 标准封装：SMC（DO-214AB）便于自动贴装与散热处理。
四、典型应用场景
- 工业电源与配电系统中对直流/交流母线（工作电压≤40V）的瞬态保护；
- 通讯设备、基站供电与接口保护；
- 逆变器、驱动模块与电动设备的输入端突波抑制；
- 24V/36V 工业控制系统、传感器电源保护（备注：不建议用于额定工作电压持续超过 Vrwm 的场合）。
五、选型与布局建议
- 确认工作电压：器件的 Vrwm 为 40 V，应确保被保护线路的持续工作电压低于此值，瞬态才会被可靠钳位。
- 钳位评估：钳位电压 64.5 V 为在 Ipp 条件下的典型值，选择时需保证下游元件能承受该电压峰值。
- PCB 布局：TVS 应尽量靠近被保护端口或连接器放置，尽量缩短引线长度；SMC 封装需配合足够铜箔和散热过孔以增强热耗散能力。
- 环境与热设计：在高频繁脉冲或高能量冲击场合，评估器件温升并考虑并联或更高规格器件以延长寿命。
六、使用注意事项与可靠性
- 非连续工作：TVS 主要用于瞬态事件，不应在超过 Vrwm 的电压下长期工作；长期超压会导致器件过热或性能退化。
- 浪涌规范：如需满足具体抗浪涌标准（例如 IEC 类标准），请在实际系统中依据测试波形和能量级别做完整验证。
- 存储与焊接：遵循封装厂商的回流焊温度和湿敏等级（若有），避免过高温度或重复热循环造成封装应力。
总结：SMDJ40CA 是一款面向工业级瞬态保护的双向 TVS，适合在工作电压不超过 40V 的系统中为电源总线、接口和敏感电路提供可靠的浪涌抑制。合理的选择、布局与热管理可显著提升保护效果与可靠性。
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