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BORN SMAJ350A
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BORN SMAJ350A
- Type
- BORN
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BORN
- Electronic Component
- SMAJ350A
- Electronic Component
- 1
- Package
- SMA(DO-214AC)
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.117g
- Electronic Component
- 1
- Electronic Component
- BM0264900512
- Voltage
- 567V
- Current(Ir)
- 1uA
- Voltage(VBR)
- 432V
- 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.
SMAJ350A 产品概述
一、主要特点
- 器件类型：单向 TVS 二极管（Transient Voltage Suppressor），品牌：BORN（伯恩半导体）。
- 反向工作电压 Vrwm：350V，击穿电压 VBR：432V（在规定测试电流下）。
- 钳位电压：567V（在指定脉冲条件下）。
- 峰值脉冲电流 Ipp：700mA，波形 10/1000μs；峰值脉冲功率 Ppp：400W（10/1000μs）。
- 反向漏电流 Ir：1μA（典型/最大值，常温下）。
- 封装：SMA (DO-214AC)，适合表面贴装自动化生产。
二、电气参数说明
- Vrwm（350V）：器件在正常工作状态下能承受的最大连续反向电压，不应长期超过此值。
- VBR（432V）：在规定试验电流下发生雪崩击穿的电压，器件开始导通以限制过电压。
- 钳位电压（567V）：在承受峰值脉冲电流时对被保护节点的最高限制电压，反映保护能力对受保护电路的实际限制效果。
- Ipp 与 Ppp（700mA / 400W，10/1000μs）：表征在工业脉冲（较长尾波）条件下的能量吸收能力，适用于雷击感应和开关突波的缓解。
- Ir（1μA）：漏电流小，适合对静态耗电敏感的电路。
三、典型应用场景
- 工业控制与电力电子设备：中高压直流母线、逆变器输入、驱动器保护。
- 通信与基站设备：远端供电线路、冗余电源防浪涌。
- 电源模块与开关电源：输入端浪涌抑制、整流后端保护。
- 智能控制系统与楼宇自控：对中高压传输线路的过电压防护。
四、设计与布局建议
- 放置位置：尽量靠近被保护元件或电源入口，缩短走线以降低串联电感，提升钳位效果。
- 保护配合：对于大能量冲击建议与保险丝、气体放电管（GDT）或金属氧化物避雷器配合使用，避免单一器件承受过大能量。
- 散热与功耗：SMA 封装散热能力有限，高频或多次冲击场景需考虑器件温升及额定能量累积。
- 焊接与工艺：按照厂家回流焊曲线规范焊接，避免过高峰值温度和长时间回流。
五、选型与注意事项
- 确认系统持续工作电压不接近 Vrwm，以保证余量与可靠性。
- 对于需要更低钳位电压或更高峰值电流的场景，考虑并联或选择更高能量等级的 TVS 或复合防护方案。
- 单向器件适用于以地为参考的直流/极性明确电路，双向需求请选择相应型号。
- 检查实际脉冲波形与 10/1000μs 规格的匹配度，脉冲持续时间不同会影响保护效果。
六、品牌与封装
- 型号标识：SMAJ350A，制造商：BORN（伯恩半导体），常见供应渠道可索取详细数据手册（Datasheet）以获取完整参数、测试条件与封装尺寸。
总结：SMAJ350A 为一款面向中高压直流及工业级浪涌保护的单向 TVS 二极管，具有较高的脉冲吸收能力与较小的漏电流，适用于需在有限封装尺寸内实现可靠防护的工程场景。选择时应综合考虑工作电压余量、能量等级与系统布线与散热条件。
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