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RUILON SMAJ12A
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- RUILON SMAJ12A
- Type
- RUILON
- Minimum package
- 5000
Technical parameters
- Electronic Component
- RUILON
- Electronic Component
- SMAJ12A
- Electronic Component
- 1
- Package
- DO-214AC(SMA)
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.1g
- Electronic Component
- 1
- Electronic Component
- BM0227699989
- Operating Temperature
- 55℃~+150℃
- Voltage
- 19.9V
- Electronic Component
- IEC 61000-4-4；IEC 61000-4-2
- Current(Ir)
- 1uA
- Voltage(VBR)
- 15.3V
- Electronic Component
- 5000
- Power(Ppp)
- 400W@10/1000us
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMAJ12A 产品概述
一、产品简介
SMAJ12A 是 RUILON(瑞隆源)出品的一款瞬态抑制二极管（TVS），封装为 DO-214AC（SMA），主要用于对 12V 及相近电压回路的浪涌、电压突变和静电放电进行瞬态保护。器件耐受 IEC 61000-4-4（EFT）和 IEC 61000-4-2（ESD）标准要求，适合工业、通信、电源和车载电子等需要抗脉冲干扰的场合。
二、主要电气参数
- 反向截止电压 (Vrwm)：12V（适用于标称 12V 直流电源保护）
- 击穿电压：约 15.3V（Vz，典型值）
- 钳位电压：约 19.9V（在峰值脉冲电流条件下测得）
- 峰值脉冲电流 (Ipp)：20.1A
- 峰值脉冲功率 (Ppp)：400W（10/1000µs 波形）
- 反向漏电流 (Ir)：1µA（接近零负载时的泄漏电流）
- 工作温度范围：-55℃ ~ +150℃
三、主要特性与优势
- 高能量吸收：10/1000µs 下 400W 的峰值功率，能够抑制较长宽脉冲能量，保护后级元件免受浪涌损坏。
- 低漏电与快速响应：典型反向漏电小（1µA），在瞬态发生时能迅速钳位电压，限制电压上升。
- 宽温度范围：-55℃ 至 +150℃，适应恶劣环境与高温工作场合。
- 符合 IEC 61000-4-2/4-4 标准，适用于工业级抗干扰设计。
四、封装与安装注意
- 封装：DO-214AC (SMA)，常见于表面贴装或波峰焊装配。
- 极性：单向 TVS（请根据产品数据确认极性标识），负载线通过器件的阳极/阴极连接；通常将器件 cathode（有带标）接被保护电源线，anode 接地。
- 布局建议：尽量靠近被保护端口或连接器安放，走线短且宽，减少回流环路电感；确保良好接地以提供低阻抗泄放路径。
五、典型应用场景
- 12V 直流供电系统、工业控制器、电源模块输入保护；
- 通信设备接口浪涌/静电保护；
- 车载电子低压电源保护（请结合车辆电气规范与瞬态等级确认）；
- 储能、逆变器、安防设备等需抗高能突发脉冲的应用。
六、选型与使用建议
- 验证浪涌能量：在系统设计中确认可能的最大冲击能量与脉冲波形（10/1000µs 为常用参考），确保 Ppp 与 Ipp 能满足要求。
- 钳位电压匹配：19.9V 的钳位电压在保护 12V 线时通常可接受，但需确认被保护器件能耐受该电压峰值。
- 并用保护元件：对于更高能量或多次冲击环境，可配合熔断器、NTC 或串联电阻以分担能量。
- 注意热耗散与反复冲击的寿命，避免长期在极限脉冲条件下工作。
若需完整详细数据、波形曲线或封装图纸，建议索取 RUILON 官方 Datasheet 以进行最终设计验证。
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