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BORN SMAJ7.5CA
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BORN SMAJ7.5CA
- Type
- BORN
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BORN
- Electronic Component
- SMAJ7.5CA
- Electronic Component
- 1
- Package
- DO-214AC
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.543g
- Electronic Component
- 1
- Electronic Component
- BM0264491093
- Voltage
- 12.9V
- Current(Ir)
- 50uA
- Voltage(VBR)
- 8.33V
- 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.
SMAJ7.5CA — BORN（伯恩半导体）功率TVS产品概述
一、产品简介
SMAJ7.5CA 是 BORN（伯恩半导体）推出的一款双向功率瞬态抑制二极管（TVS），专为电源口及需双向过压保护的线路设计。器件以 DO-214AC（SMA）封装提供，适合工业级防浪涌、雷击与开关过电压抑制。其设计兼顾高能量吸收能力与低漏电流，适用于对稳态电流影响敏感的电源与信号路径。
二、主要电气参数
- 极性：双向
- 反向截止电压 Vrwm：7.5 V
- 击穿电压 VBR：8.33 V
- 钳位电压（Ipp=31 A 时）：12.9 V
- 峰值脉冲电流 Ipp（10/1000 μs）：31 A
- 峰值脉冲功率 Ppp（10/1000 μs）：400 W
- 反向漏电流 Ir（常温）：50 μA
- 类型：TVS，型号：SMAJ7.5CA，封装：DO-214AC
这些参数表明该器件在标准 10/1000 μs 浪涌条件下能承受 400W 峰值能量，钳位电压在保护设备电压等级内维持良好抑制效果，漏电流低便于不干扰静态工作。
三、封装与热性能
DO-214AC（SMA）封装体积小、可靠性高，易于自动贴装和波峰/回流焊接。由于 TVS 在吸收脉冲能量时会产生显著热量，推荐在 PCB 上为器件提供良好散热路径（加大焊盘、连接至大面积铜箔或散热地）。在连续或频繁浪涌工况下需考虑热耗散与脉冲间隔，避免器件因过热而退化。
四、典型应用场景
- 开关电源输入端、直流母线保护
- 电源适配器、充电桩与不间断电源（UPS）输入/输出保护
- 工业控制与自动化设备电源口
- 通信基站、电信设备电源防雷与浪涌保护
- 需要双向保护的交流或有反向突变的电路（例如某些传感器供电线）
五、使用建议与注意事项
- 双向器件适用于可能出现正负方向瞬态的线路；若仅单向过压，优先考虑单向型以获得更低钳位电压。
- 确认 Vrwm（7.5 V）高于工作稳压值，避免常态下进入击穿区。
- 钳位电压 12.9 V 应满足被保护器件的最高承受电压，否则需选用更高能量或更低钳位的型号组合。
- 布局上尽量将 TVS 靠近需要保护的输入端，走线短粗以降低寄生电感，提升保护速度与效率。
- 注意焊接工艺：按器件供应商的回流焊温度曲线进行，避免超温影响可靠性。
六、可靠性与选型建议
SMAJ7.5CA 以 10/1000 μs 浪涌规范给出能量指标，符合典型电力/通信防护需求。选型时应基于最差瞬态情形（如雷击、开关瞬变）评估所需 Ipp 与 Ppp 余量，并考虑环境温度、重复脉冲频率和散热条件。对于更高能量或更低钳位要求，可并联或串联其它规格 TVS 或配合熔断器、线圈等一级防护元件构成多级保护方案。
如需器件样片、封装3D模型或详细浪涌曲线（I-V、钳位随电流变化），可向供应商索取完整规格书以做最终设计验证。
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