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BORN SMAJ14A
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BORN SMAJ14A
- Type
- BORN
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BORN
- Electronic Component
- SMAJ14A
- Electronic Component
- 1
- Package
- SMA(DO-214AC)
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.118g
- Electronic Component
- 1
- Electronic Component
- BM0258885496
- Voltage
- 23.2V
- Current(Ir)
- 1uA
- Voltage(VBR)
- 17.2V
- 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.
SMAJ14A（SMA封装）TVS二极管产品概述
一、产品简介
SMAJ14A 是一款单向（极性）瞬态电压抑制（TVS）二极管，由 BORN（伯恩半导体）生产，采用常见的SMA/DO-214AC封装。该器件针对脉冲浪涌和瞬态过压事件提供可靠保护，尤其适用于12V级电源系统与信号线的反向/浪涌保护需求。
二、主要电气参数
- 反向额定电压（Vrwm）：14V（稳态工作电压）
- 击穿电压（Vbr）：17.2V（在规定电流下）
- 钳位电压：23.2V（Ipp条件下）
- 峰值脉冲电流（Ipp）：17.3A（标准10/1000µs冲击模型）
- 峰值脉冲功率（Ppp）：400W（10/1000µs）
- 反向漏电流（Ir）：典型1µA（在Vrwm条件下）
- 类型：单向 TVS，极性明确，适用于单向电源保护
三、主要特性与优势
- 高能量吸收能力：在10/1000µs冲击下可承受400W峰值功率，适合应对雷击和电源浪涌等长波形脉冲。
- 低钳位电压：23.2V 的钳位电压能在浪涌期间将瞬态电压限制在较安全范围，减少后端器件应力。
- 低漏电流与快速响应：1µA级漏电流有利于节省静态功耗，TVS器件可在纳秒量级响应高速瞬态。
- SMA封装：表面贴装、占板面积小、易于自动贴装和回流焊接，适合批量生产。
四、典型应用场景
- 汽车电子12V电源总线保护（需注意汽车环境温度与规范认证）
- DC供电系统、工业控制设备的输入端防护
- 通信设备、网关、电源适配器的浪涌与过压保护
- 信号线与接口的瞬态抑制（注意电压匹配与极性）
五、封装与安装注意
器件采用SMA（DO-214AC）表贴封装，焊盘尺寸和热量管理应按厂家推荐值设计。回流焊曲线需与无铅焊接工艺兼容；安装时注意极性标识，单向TVS在反向（标称工作方向）下工作，正向导通仅用于大电流短路情况。为保证热耗散和可靠性，布局时应考虑良好的散热路径与适当的引线阻抗。
六、选型与使用建议
- 工作电压裕量：选择Vrwm略高于系统正常电压（例如12V系统选14V），避免在正常波动下频繁触发。
- 钳位要求：确保器件钳位电压低于被保护元件可承受的最大电压。
- 能量匹配：根据可能的浪涌能量选择合适的Ppp/Ipp等级；对于更高能量事件可并联或升级至更高功率器件。
- 环境与规范：若用于汽车或工业场景，应参考相关行业规范并检查器件温度范围与认证信息（以原厂数据为准）。
综上，SMAJ14A 提供在体积小巧的SMA封装下，面向12V级电源与信号线的高效瞬态抑制能力，适合对成本、面积和保护性能有平衡需求的应用。购买与最终设计时，请参考厂商详细数据手册以获取完整的温度特性与测试条件。
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