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TECH PUBLIC SMAJ5.0A
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- TECH PUBLIC SMAJ5.0A
- Type
- TECH PUBLIC
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- TECH PUBLIC
- Electronic Component
- SMAJ5.0A
- Electronic Component
- 1
- Package
- DO-214AC(SMA)
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.119g
- Electronic Component
- 1
- Electronic Component
- BM0231019643
- Operating Temperature
- 55℃~+150℃
- Voltage
- 9.2V
- Current(Ir)
- 800uA
- Voltage(VBR)
- 7V
- 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、概述
SMAJ5.0A 是 TECH PUBLIC（台舟电子）出品的一款单向瞬态抑制二极管（TVS），封装为 DO-214AC（SMA）。器件以 5V 直流工作电压（Vrwm）为基准，专为吸收线路瞬态过电压、保护敏感半导体和接口电路而设计，适用于工业、通信、电源和汽车电子等场景。
二、主要电气参数
- 极性：单向（Unidirectional）
- 反向稳态工作电压 Vrwm：5V
- 击穿电压 Vbr：7V
- 钳位电压 Vc（Ipp）：9.2V
- 峰值脉冲电流 Ipp：43.5A（脉冲波形 10/1000µs）
- 峰值脉冲功率 Ppp：400W（10/1000µs）
- 反向漏电流 Ir：≤800µA（在 Vrwm 条件下）
- 工作温度范围：-55℃ ~ +150℃
三、关键特性
- 强力吸收：在 10/1000µs 波形下能承受高达 43.5A 的单次脉冲电流，峰值功率 400W，适合雷击及开关感应类瞬态。
- 低钳位：9.2V 钳位电压确保被保护线路在过电时电压保持在安全范围内，减少下游器件应力。
- 单向结构：针对 DC 供电与单向浪涌场景优化，导通特性一致性好，反向漏电小。
- 宽温工作：-55℃ 到 +150℃ 的温度范围满足严苛工业及户外环境要求。
四、推荐应用
- 开关电源输入、DC 电源总线防护（5V 系统优选）
- 通信接口（串口、以太网非隔离侧）、信号线防雷与浪涌抑制
- 汽车电子辅助电路、车载 5V 子系统短时过压保护（需参考车规认证）
- 工业控制设备、仪器仪表的瞬态过电压防护
五、选型与使用注意
- 确认系统的最大工作电压与 Vrwm 匹配，SMAJ5.0A 适用于标称 5V 分配电路；若系统存在双极性或交流往返浪涌，应选双向型号。
- 钳位电压决定保护后端器件所承受的峰值，务必核算被保护器件的耐压裕量。
- 脉冲功率与能量按 10/1000µs 波形给出；对不同波形（如 8/20µs）需参考对应能量换算或仿真。
- 反向漏电 Ir 在高温下会增大，若电路对静态漏电敏感，请评估热态下的漏电影响。
六、封装与安装
- 封装：DO-214AC（SMA），适合常规贴片回流焊工艺。
- PCB 布局建议：涌流回路短而粗；放置于被保护端口与大地/电源参考之间，焊盘按制造商推荐尺寸设计以保证散热与机械强度。
七、可靠性与储存
- 工作温度宽，适用于工业级环境。
- 出厂与储存应避免潮湿，按普通半导体元件存储规范进行干燥包装管理。
- 在高能量反复冲击场合，建议做系统级浪涌测试并预留安全裕度。
如需样品测试或进一步的浪涌曲线、热阻和封装尺寸图纸，可联系 TECH PUBLIC（台舟电子）或参考其完整数据手册以获得更详细的应用指导和可靠性数据。
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