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BORN SMAJ440CA
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BORN SMAJ440CA
- Type
- BORN
- Minimum package
- 5000 编带
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BORN
- Electronic Component
- SMAJ440CA
- Electronic Component
- 1
- Package
- SMA(DO-214AC)
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.131g
- Electronic Component
- 1
- Electronic Component
- BM0229906788
- Voltage
- 713V
- Current(Ir)
- 1uA
- Voltage(VBR)
- 492V
- Electronic Component
- Electronic Component
- Electronic Component
- 5000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMAJ440CA 产品概述
SMAJ440CA 是 BORN（伯恩半导体）推出的一款双向瞬态电压抑制器（TVS），采用 SMA（DO-214AC）封装，专为吸收高能脉冲瞬态过电压而设计。器件在冲击浪涌条件下具有高功率吸收能力和极低的反向漏电流，适用于需要稳健过压保护的直流或交流电源及信号线上。
一、主要电气参数
- 钳位电压（Vclamp）：713 V（典型，10/1000µs 浪涌条件下）
- 击穿电压（Vbr）：492 V
- 反向截止电压（Vrwm，连续工作电压）：440 V
- 峰值脉冲功率（Ppp）：400 W（按 10/1000µs 波形）
- 峰值脉冲电流（Ipp）：约 600 mA（对应上述功率与钳位电压）
- 反向漏电流（Ir）：1 µA（在 Vrwm 条件下）
- 极性：双向（Bidirectional）
- 类型：瞬态抑制二极管（TVS）
- 封装：SMA（DO-214AC）
- 品牌：BORN（伯恩半导体）
二、功能与特点
SMAJ440CA 作为双向 TVS，在正负极性瞬态电压时均能快速触发导通，将浪涌能量钳制在安全电压范围内，保护下游器件免受击穿或损坏。其主要特点包括：
- 高能量吸收：在 10/1000µs 波形下可承受 400 W 的浪涌能量，适合工业电源和配电系统的浪涌保护。
- 低漏电流：Vrwm 下漏电仅 1 µA，有利于对漏电敏感的电路（如测量、控制系统）。
- SMA 封装：体积小、可靠性高，便于自动贴片和大批量生产装配。
三、应用场景
- 工业直流电源保护（高压直流母线、驱动电源）
- 交流/直流混合电路的浪涌保护（双向特性适合交流）
- 通信基站、逆变器、UPS 及电源接口的输入端保护
- 继电器线圈、马达驱动等容易产生反向瞬变的回路
四、使用建议与注意事项
- 布局：将 TVS 尽量靠近受保护端口放置，走线最短、铜箔宽以降低串联电感和热阻。必要时在封装下方或邻近位置增加热过孔以改善散热。
- 系列保护：在高能量应用中建议与熔断器、限流电阻或气体放电管配合使用，以分担极端浪涌并满足系统安全要求。
- 工作电压选择：Vrwm（440 V）应高于正常工作电压但低于被保护器件的耐压。双向器件适用于两极性脉冲或交流系统。
- 环境与温度：在高温或连续高能量冲击条件下需考虑降额设计，参考厂方完整数据手册以获取温度特性和浪涌循环能力。
五、封装与可靠性
SMA（DO-214AC）封装兼顾机械强度与热散能力，适合波峰回流、再流焊工艺。器件经过浪涌和冲击测试后，能在工业环境提供长期可靠的保护性能。
总结：SMAJ440CA 为需要在高压、高能瞬态环境下实现稳健过压保护的方案提供了体积小、吸能大、漏电低的解决方案。选型时请结合具体系统的工作电压、浪涌能量及热管理需求，并参照厂方数据手册确认完整参数与使用限制。
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