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DOWO SMCJ12A
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DOWO SMCJ12A
- Type
- DOWO
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DOWO
- Electronic Component
- SMCJ12A
- Electronic Component
- 1
- Package
- SMC(DO-214AB)
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.4g
- Electronic Component
- 1
- Electronic Component
- BM0264866266
- Operating Temperature
- 55℃~+150℃
- Voltage
- 19.9V
- Electronic Component
- IEC 61000-4-2
- Current(Ir)
- 1uA
- Voltage(VBR)
- 13.3V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMCJ12A（东沃DOWO）单向瞬态抑制二极管产品概述
一、产品定位与典型应用场景
SMCJ12A是东沃（DOWO）针对低电压电路瞬态过压防护设计的单向TVS器件，核心作用是快速抑制静电放电（ESD）、雷电感应、开关浪涌等瞬态冲击，保护后级敏感元件（如MCU、传感器、通信芯片）。其典型应用覆盖三大领域：
- 消费电子与便携式设备：智能手机、平板电脑、蓝牙耳机的充电/数据接口防护，避免静电或浪涌损坏；
- 工业控制与自动化：PLC输入输出端口、伺服驱动器、传感器模块的过压防护，适应工业现场复杂电磁环境；
- 汽车电子：车载传感器（温度/压力）、车载显示屏、ADAS模块的防护，满足汽车级宽温要求。
二、核心电气参数深度解析
SMCJ12A的参数针对低电压场景精准优化，关键参数的实际意义清晰：
- 反向截止电压（Vrwm=12V）：正常工作时反向电压≤12V呈高阻态，不影响电路运行；
- 击穿电压（Vbr=13.3V）：过压超过13.3V时快速击穿，泄放瞬态能量；
- 钳位电压（Vc=19.9V）：击穿后将后级电压钳位在19.9V（远低于多数MCU耐压阈值），实现有效保护；
- 峰值脉冲电流（Ipp=75.38A）：可承受常见浪涌/静电的电流冲击；
- 峰值脉冲功率（Ppp=1.5kW@10/1000μs）：对应国际标准浪涌波形的功率耐受能力，满足IEC 61000-4-5要求；
- 反向漏电流（Ir=1μA）：截止时漏电流极小，不增加电路静态功耗。
三、封装与物理可靠性设计
采用SMC（DO-214AB）表面贴装封装，具备三大优势：
- 小型化适配：尺寸仅3.0×2.5×1.5mm，适合便携式设备高密度布局；
- 散热与焊接可靠：高导热封装材料提升脉冲功率耐受时的散热效率；镀锡/镀金引脚耐氧化，适配SMT自动贴装；
- 抗振抗冲击：结构紧凑，可应对车载、工业等振动环境。
四、防护性能与国际标准认证
通过IEC 61000-4-2静电放电抗扰度标准，可应对：
- 接触放电：±8kV~±15kV；
- 空气放电：±15kV~±20kV；
同时兼容IEC 61000-4-5浪涌标准，实现“静电+浪涌”双重防护。
五、宽温环境适应性
工作温度范围**-55℃~+150℃**，远超商用级器件：
- 低温适配：-55℃极端低温下稳定工作，适合寒冷地区户外设备；
- 高温可靠：+150℃长期工作无参数漂移，适配汽车发动机舱、高温工业场景；
- 循环稳定：高低温循环（-55~150℃，1000次）后性能无衰减。
六、品牌与质量保障
东沃（DOWO）作为专业厂商，SMCJ12A具备：
- 环保认证：符合RoHS 2.0、REACH标准，无铅无卤；
- 质量管控：每批次全参数测试，良率≥99.5%；
- 售后支持：1年质保，可定制化参数（如更高脉冲功率）。
SMCJ12A凭借宽温、高防护、小封装等优势，成为低电压电路瞬态防护的高性价比选择。
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