WMSIC Electronic Components

YANGJIE SMF18A

ModelSMF18A
PackageSOD-123FL
BrandYANGJIE
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

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Technical data

Product details

13 specifications

Core information

Product name
YANGJIE SMF18A
Type
SOD-123FL
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
YANGJIE
Electronic Component
SMF18A
Electronic Component
1
Package
SOD-123FL
Electronic Component
0.041g
Electronic Component
1
Electronic Component
BM0265743169
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.

SMF18A 瞬态抑制二极管(TVS)产品概述

一、产品基本属性

SMF18A是一款单向瞬态抑制二极管(TVS),由国内知名半导体厂商扬杰科技(YANGJIE) 研发生产,采用SOD-123FL 贴片封装。作为电路过压保护核心器件,其核心作用是在遭遇静电放电(ESD)、雷击感应、开关冲击等瞬态浪涌时,快速导通并钳位电压,避免后端敏感元器件(如MCU、传感器)受损。

二、核心电性能参数

SMF18A的电性能参数经过严格测试,关键指标清晰适配低压电路保护需求:

  1. 反向截止电压(Vrwm):18V
    器件正常工作时可承受的最大反向电压,此时处于截止状态,无明显电流导通,不影响电路效率。
  2. 击穿电压(Vbr):22.1V
    当电路电压超过Vrwm并达到22.1V时,器件开始击穿导通,从“截止”切换至“保护”状态。
  3. 钳位电压(Vc):29.2V
    遭遇峰值脉冲时,器件将电路电压钳位至29.2V(典型值),有效抑制过压对后端器件的冲击。
  4. 峰值脉冲电流(Ipp):6.85A
    对应200W峰值功率下的最大瞬态脉冲电流,可承受中等强度浪涌。
  5. 峰值脉冲功率(Ppp):200W(10/1000μs波形)
    以国际标准10/1000μs浪涌波形测试,器件可稳定承受200W峰值功率,满足多数应用场景的防护需求。
  6. 反向漏电流(Ir):1μA(典型值)
    正常工作状态下漏电流极小,静态损耗低,不影响电路正常运行。
  7. 工作温度范围:-55℃~+150℃
    宽温设计可适应工业、汽车等恶劣环境下的长期稳定工作。

三、封装与可靠性

SMF18A采用SOD-123FL 贴片封装,具备以下优势:

  • 尺寸紧凑:符合贴片封装标准(约2.3×1.25mm),适合高密度电路板设计,支持自动化贴装(SMT),生产效率高;
  • 可靠性优异:封装结构抗机械应力能力强,结合宽工作温度范围,可在高低温、湿度变化环境下长期稳定运行;
  • 散热良好:小封装下仍能有效散发热量,避免脉冲功率下的过热损坏。

四、典型应用场景

SMF18A凭借低压适配、高可靠性特点,广泛应用于以下领域:

  1. 消费电子:手机、平板、笔记本的USB接口、充电端口保护,防止静电和浪涌冲击;
  2. 工业控制:PLC输入输出端口、传感器节点的过压保护,适应工业现场的温度变化和电磁干扰;
  3. 通信设备:路由器、交换机、光模块的信号端口保护,抑制雷击感应浪涌;
  4. 汽车电子:车载12V系统的辅助保护(如车载充电器、仪表盘电路),适配汽车级环境需求;
  5. 电源电路:DC-DC转换器、线性电源的输入输出端保护,防止开关切换产生的瞬态过压。

五、品牌与产品优势

扬杰科技作为国内半导体行业领军企业,SMF18A具有以下核心优势:

  • 参数一致性好:批量生产中电性能偏差小,保证电路保护效果稳定;
  • 性价比高:在满足性能要求的前提下,成本优势明显,适合大规模应用;
  • 供货稳定:扬杰科技产能充足,可满足客户长期稳定采购需求;
  • 应用灵活:单向极性设计适配单方向过压场景,18V截止电压覆盖12V、15V等主流低压系统。

总结

SMF18A是一款性能可靠、适配性强的单向TVS,可有效防护低压电路的瞬态过压,广泛应用于消费电子、工业控制、通信等领域,是电路保护设计中的理想选择。

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