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GOODWORK SMAJ5.0A
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- GOODWORK SMAJ5.0A
- Type
- GOODWORK
- Minimum package
- 2000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- GOODWORK
- Electronic Component
- SMAJ5.0A
- Electronic Component
- 1
- Package
- DO-214AC
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.092g
- Electronic Component
- 1
- Electronic Component
- BM0227247354
- Operating Temperature
- 55℃~+150℃
- Voltage
- 9.2V
- Current(Ir)
- 800uA
- Voltage(VBR)
- 6.4V
- Electronic Component
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMAJ5.0A 产品概述
一、产品简介
SMAJ5.0A 是 GOODWORK（固得沃克）推出的一款单向TVS瞬态电压抑制二极管，采用DO-214AC（SMA）封装，专为5V等级电源与信号线的浪涌保护设计。器件在遭受瞬态过压时快速击穿并将脉冲能量钳位到安全电压，从而保护后端敏感元件免受损坏。
二、主要技术参数
- 类型：TVS，单向
- 钳位电压（Vc）：9.2 V
- 击穿电压（Vbr）：6.4 V
- 反向截止电压（Vrwm，反向工作电压）：5 V
- 峰值脉冲功率（Ppp，短时）：400 W
- 峰值脉冲电流（Ipp）：43.5 A
- 反向电流（Ir）：800 μA（在 Vrwm 条件下）
- 工作结温度范围（Tj）：-55 ℃ ~ +150 ℃
- 封装：DO-214AC（SMA）
- 品牌：GOODWORK（固得沃克）
三、工作原理与接法
该单向TVS在正常工作时呈高阻抗，反向静态下可承受5V；遇到正向或反向的高速过冲（如雷击、电感切换产生的尖峰），器件在击穿电压附近导通，将能量导入地或电源回路，钳位电压约为9.2V，从而限制被保护节点电压。典型接法为：阴极（标记端）接电源正极，阳极接地，直接并联在被保护端与地之间。
四、典型应用场景
- 5V 电源总线保护（消费电子、嵌入式主控）
- 通信接口与数据线的浪涌防护（UART、I2C、SPI 等速率较低线路）
- 工业控制设备与传感器接口保护
- 汽车电子辅助线路（在符合温度与冲击要求的条件下）
- 电源模块、充电器和适配器的输入端防护
五、封装与可靠性建议
DO-214AC（SMA）封装便于自动贴装与波峰/回流焊接。通过器件的高温工作范围（-55℃~150℃）可满足多数工业级应用。实际PCB布局时建议：
- TVS靠近被保护器件或外部连线入口放置，缩短引线长度以降低寄生电感；
- 提供足够的散热铜箔面积以利热量扩散，避免多次大能量冲击导致温升；
- 对于关键应用，建议配合熔断器或串联阻抗以限制连续冲击后器件应力。
六、选型与注意事项
选择时以系统工作电压和允许钳位电压为准，SMAJ5.0A 适合5V系统但钳位为9.2V，需确认下游器件能承受该瞬态钳位或在系统中有额外限制措施。反向漏电800 μA 在一些低功耗电路中可能较高，应评估静态功耗影响。对于更严苛的浪涌能量或更低钳位需求，可考虑更高能量等级或并联/组合保护方案。
如需器件的完整限值曲线、冲击波形（10/1000 μs、8/20 μs 等）对应的参数，或推荐的PCB封装和应用电路图，可提供进一步资料以便精确选型与设计验证。
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