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CJ CJSMF13A
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- CJ CJSMF13A
- Type
- CJ
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- CJ
- Electronic Component
- CJSMF13A
- Electronic Component
- 1
- Package
- SOD-123FL
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.044g
- Electronic Component
- 1
- Electronic Component
- BM0264898173
- Voltage
- 21.3V
- Current(Ir)
- 5uA
- Voltage(VBR)
- 15.89V
- Electronic Component
- Electronic Component
- Electronic Component
- 3000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
CJSMF13A 瞬态抑制二极管（TVS）产品概述
CJSMF13A是江苏长电（CJ）推出的单向瞬态抑制二极管（TVS），采用SOD-123FL小封装设计，核心定位为小尺寸高可靠性过压保护器件，广泛适配消费电子、通信设备、工业控制等空间紧凑的应用场景。
一、产品核心定位与典型应用场景
作为针对低中压电路的TVS管，CJSMF13A的核心作用是快速钳制瞬态过压（如静电放电、电源浪涌、雷击感应等），避免后端敏感元器件（MCU、传感器、通信IC）被损坏。其典型应用场景包括：
- 消费电子终端：手机、平板、智能穿戴的充电端口、USB/耳机孔等信号接口过压保护；
- 通信设备：路由器、交换机、无线AP的以太网端口、射频接口浪涌防护；
- 工业控制模块：小型PLC、传感器节点、电源适配器的输入输出端保护；
- LED驱动电路：低压LED灯带、灯具的电源浪涌抑制。
二、关键电气性能参数解析
CJSMF13A的参数围绕“安全工作+高效保护”平衡设计，核心参数及意义如下：
参数名称 数值 核心意义 极性 单向 仅保护反向过压（如电源正→地方向），正向导通无保护，需注意极性接线 反向截止电压（Vrwm） 13V 电路正常工作时TVS反向可承受的最大电压（建议电路工作电压≤12V） 击穿电压（Vbr） 15.89V TVS开始导通的电压（约为Vrwm的1.22倍，符合TVS常规特性） 钳位电压（Vc） 21.3V 浪涌时TVS两端最终电压（需≤被保护器件最大耐压，如常见IC的25V耐压） 峰值脉冲电流（Ipp） 9.3A 10/1000μs浪涌波形下可承受的最大脉冲电流（与Ppp=200W匹配） 反向漏电流（Ir） 5μA 正常工作时漏电流极小，不影响电路功耗与稳定性三、封装与可靠性优势
CJSMF13A采用SOD-123FL表面贴装封装，具备三大核心优势：
- 小尺寸适配高密度设计：封装尺寸约2.5mm×1.2mm×1.0mm，比传统SOD-123更轻薄，完美适配手机、智能穿戴等空间苛刻设备；
- 高可靠性与环境适应性：长电工业级工艺制造，满足RoHS无铅要求，工作温度范围-55℃~+150℃，1000次10/1000μs浪涌测试后性能稳定；
- 自动化生产适配：表面贴装封装支持高速贴装，降低生产复杂度，适合批量制造。
四、典型应用电路参考
1. 电源输入端口保护
电路结构：TVS并联在电源正（Vcc）与地（GND）之间，串联0.5A慢断保险丝于Vcc输入端。
工作逻辑：电源浪涌时，TVS快速导通钳制电压至21.3V；若浪涌超极限，保险丝熔断切断电源，双重保护后端电路。
2. 信号端口保护
电路结构：TVS并联在信号正与地之间（单向TVS需匹配信号极性）。
工作逻辑：信号线上出现静电或浪涌时，TVS导通钳制电压，避免后端IC被击穿。
五、选型与使用注意事项
- 选型匹配原则：
- Vrwm≥电路正常工作电压（如12V电路选13V Vrwm）；
- Vc≤被保护器件最大耐压（如IC耐压25V则21.3V满足）；
- Ipp≥电路最大浪涌电流（需通过浪涌测试确认）。
- 布局要点：
- TVS尽量靠近被保护端口（如电源接口），减少引线长度（引线电感会升高钳位电压）；
- 避免与高频走线平行，防止干扰。
- 极性确认：
- 单向TVS阴极接高电位（电源正/信号正），阳极接低电位（地），反向接会直接击穿。
- 散热考虑：
- 多次脉冲后需增加PCB焊盘面积散热，避免TVS过热损坏。
总结：CJSMF13A以小封装、高可靠性、精准参数成为低中压电路过压保护的高性价比选择，尤其适合空间紧凑的消费电子与通信设备场景。
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