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FUXINSEMI SMAJ6.8CA
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- FUXINSEMI SMAJ6.8CA
- Type
- FUXINSEMI
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- FUXINSEMI
- Electronic Component
- SMAJ6.8CA
- Electronic Component
- 1
- Package
- DO-214AC(SMA)
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.122g
- Electronic Component
- 1
- Electronic Component
- BM0225802252
- Voltage
- 10.5V
- Current(Ir)
- 1mA
- Voltage(VBR)
- 7.14V
- 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.
SMAJ6.8CA 产品概述
SMAJ6.8CA 为 FUXINSEMI（富芯森美）出品的双向瞬态电压抑制二极管（TVS），采用标准 DO-214AC（SMA）封装，专为保护敏感电子电路免受雷击、开关瞬变和静电放电等冲击而设计。该器件在小体积下提供高能量吸收能力和快速响应速度，适用于 5V 电源总线、信号端口及工业控制线路的浪涌保护。
一、主要参数
- 钳位电压（Vc）：10.5V（在峰值脉冲电流条件下）
- 击穿电压（Vbr）：7.14V（典型）
- 反向截止电压 Vrwm：5.8V（额定工作电压）
- 峰值脉冲功率 Ppp：400W（标准脉冲条件下）
- 峰值脉冲电流 Ipp：39A
- 反向电流 Ir：1mA（在 Vrwm 条件下）
- 极性：双向
- 封装：DO-214AC（SMA）
- 类型：TVS
二、性能特点
- 双向结构可在正负电压冲击下双向钳位，适合交流或可能反向的电路保护。
- 低反向截止电压（5.8V），适配 5V 及以下工作电压的电源与接口保护需求。
- 高峰值脉冲功率 400W 与 39A 峰值电流能力，在典型浪涌事件中能迅速吸收能量并限制电压上升。
- 典型钳位 10.5V 能有效保护后端器件不被较高瞬态电压损坏。
三、典型应用
- 5V 电源总线保护（如 MCU、电源模块）
- USB、串口、以太网等通讯接口浪涌抑制
- 工业控制与测量系统的输入/输出保护
- 电源转换器、继电器驱动和汽车电路中的瞬态抑制（需确认工作电压与环境温度匹配）
四、封装与安装建议
- DO-214AC（SMA）为表面贴装封装，装配时建议采用回流焊工艺，遵循厂家推荐的回流温度曲线以避免机械应力和热损伤。
- 布局时尽量缩短保护器件与被保护引脚间的走线，增加散热铜箔面积，降低寄生电感与热阻，提升能量吸收与重复浪涌能力。
- 对于高频或高速信号线，注意匹配阻抗与最小化寄生电容带来的信号畸变。
五、选型注意事项
- 确保 Vrwm（5.8V）高于系统正常工作电压但低于被保护器件的耐压极限；钳位电压 10.5V 应低于被保护器件最大承受电压。
- 注意反向泄漏电流 1mA 在断电或低功耗场景可能影响待机电流预算。
- 若系统可能遭受更大能量冲击，应考虑更高功率或并联/分级保护方案。
六、可靠性与测试建议
- 在最终应用中进行实际浪涌测试（如 IEC 61000-4-5）以验证整体防护效果。
- 关注工作温度对击穿与钳位特性的影响，必要时查阅器件的温度特性曲线。
- 储存与组装时采取防静电措施，避免在潮湿环境长期存放以降低器件失效风险。
SMAJ6.8CA 以其紧凑封装与良好能量吸收性能，适合用于对体积与成本有要求且需可靠瞬态防护的电子系统。购买与设计时，请结合具体工作电压、环境与测试标准进行综合评估。
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