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BORN SMAJ13A
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BORN SMAJ13A
- Type
- BORN
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BORN
- Electronic Component
- SMAJ13A
- 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
- BM0230041444
- Voltage
- 21.5V
- Current(Ir)
- 1uA
- Voltage(VBR)
- 14.4V
- 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.
SMAJ13A 产品概述
一、主要特点
SMAJ13A 为单向瞬态抑制二极管（TVS），专为抑制雷击、浪涌和开关瞬变等过电压事件设计。器件反向承受电压（Vrwm）为13V，击穿电压约14.4V，能在瞬态冲击下将线路电压钳位于典型21.5V，峰值脉冲功率Ppp 为400W（10/1000μs 波形），峰值脉冲电流 Ipp 为18.6A，反向漏电流仅1μA（在额定反向电压下），封装为通用的SMA（DO-214AC），便于在印制板上替换或维修。
二、主要电气参数
- 极性：单向（适合直流/定向过压保护）
- 反向截止电压 Vrwm：13V
- 击穿电压 Vbr：约14.4V
- 钳位电压 Vc（Ipp）：21.5V（对应10/1000μs、Ipp=18.6A）
- 峰值脉冲电流 Ipp：18.6A（10/1000μs）
- 峰值脉冲功率 Ppp：400W（10/1000μs）
- 反向电流 Ir：1μA（在 Vrwm 条件下）
这些参数表明器件在中等能量的浪涌事件下能有效钳位电压，保护下游敏感元件。
三、封装与热特性
SMA（DO-214AC）封装具有体积小、焊接方便、散热路径短的优点。尽管单个器件功率能力达到400W（短时波形），但仍需注意热量集中与PCB铜箔散热设计，避免频繁或高能量脉冲导致器件过热或热击穿。建议在布局时为TVS周围保留散热铜箔并尽量减少热阻。
四、典型应用场景
- 汽车电子的CAN、LIN、传感器供电线短时浪涌抑制（需注意汽车级可靠性和温度范围）
- 通信设备、电源模块、开关电源的输入/输出端突波保护
- 工业控制、仪表、LED驱动电源的过压防护
- 一般直流供电总线（12V/24V 系统）短时浪涌保护
五、选型与注意事项
- 如果被保护线路为交流或双向浪涌，应选用双向TVS；SMAJ13A为单向器件，适合DC或有明确极性的场合。
- 确认系统最大工作电压低于 Vrwm（13V），同时满足被保护器件允许的最大钳位电压（21.5V）要求。
- 对于更高能量或更频繁浪涌场合，考虑并联或选择更大功率等级的TVS，并评估散热与寿命。
- 在高可靠性应用（如汽车等级）需核实厂家可靠性验证和温度范围。
六、安装与电路布局建议
- 将TVS尽量靠近受保护端口或接口放置，走线短且粗，减小寄生电感带来的电压尖峰。
- 在可能的情况下，配合串联阻抗（电阻、磁珠）共同限制浪涌能量，延长TVS寿命。
- 波峰能量较大时考虑在PCB上增加散热铜层并避免将热源集中在器件附近。
- 焊接时遵循封装热敏性注意回流温度曲线，避免热应力损伤。
总结：SMAJ13A（BORN）为一款适用于中等能量瞬态浪涌保护的单向SMA封装TVS，凭借13V的反向截止电压、21.5V钳位电压与400W的10/1000μs冲击能力，适合12V级直流总线和接口保护。在实际使用中应关注线路工作电压匹配、散热设计及浪涌频次以确保长期可靠性。
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