WMSIC Electronic Components

MDD SMF13A

ModelSMF13A
PackageSOD-123W
BrandMDD
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 25+

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Technical data

Product details

19 specifications

Core information

Product name
MDD SMF13A
Type
MDD
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
MDD
Electronic Component
SMF13A
Electronic Component
1
Package
SOD-123W
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.036g
Electronic Component
1
Electronic Component
BM0264866565
Operating Temperature
55℃~+150℃
Voltage
21.5V
Current(Ir)
1uA
Voltage(VBR)
15.9V
Electronic Component
Electronic Component

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

SMF13A TVS二极管产品概述

SMF13A是MDD品牌推出的一款单向瞬态抑制二极管(TVS),核心作用是快速钳位电路中的瞬态过压(如雷击、静电放电、电源浪涌),保护后级敏感元件(IC、传感器等)不被击穿。凭借紧凑封装、宽温特性及可靠的脉冲耐受能力,广泛适用于消费电子、汽车电子、工业控制等场景。

一、产品基本属性与定位

SMF13A属于单向TVS器件,需反向并联于被保护电路两端(阴极接高电位、阳极接低电位)。其品牌为MDD,封装形式为SOD-123W(表面贴装小信号封装),是针对小型化、高可靠性电路设计的浪涌保护解决方案,可有效应对日常电路中的瞬态过压风险。

二、关键电气参数深度解析

SMF13A的电气参数直接决定防护能力,核心参数及实际意义如下:

  1. 反向截止电压(Vrwm):13V
    无浪涌时的最大反向工作电压,若电路正常电压低于13V(如12V电源),器件处于截止状态,漏电流极小,不影响电路功耗。
  2. 击穿电压(Vbr):15.9V
    电压超过Vrwm并达15.9V时,器件开始导通,反映触发灵敏度,确保浪涌来临时快速响应。
  3. 钳位电压(Vc):21.5V
    峰值脉冲下的钳位最大值,需低于后级元件耐压(如多数IC耐压≥25V),避免后级损坏。
  4. 峰值脉冲电流(Ipp):9.3A
    能承受的最大瞬态脉冲电流,结合功率参数可判断强浪涌耐受能力。
  5. 峰值脉冲功率(Ppp):200W
    典型1ms脉冲下的功率容量,满足电源浪涌、雷击等场景的防护需求。
  6. 反向漏电流(Ir):1uA
    正常工作时漏电流极小,避免器件自身功耗影响电路效率。
  7. 工作温度范围:-55℃~+150℃
    宽温特性适配汽车发动机舱、工业高温车间等极端环境,可靠性更高。

三、封装形式与物理特性

SMF13A采用SOD-123W表面贴装封装,特点如下:

  • 尺寸紧凑:典型尺寸2.3mm×1.25mm×1.0mm,与0805封装相当,适合手机、智能穿戴等高密度PCB设计;
  • 焊接便捷:符合RoHS环保要求,支持回流焊、波峰焊,焊接温度需控制在260℃以内(避免热损伤);
  • 引脚结构:2引脚单向设计,需严格注意极性,接反会导致短路。

四、典型应用场景

SMF13A的参数特性使其适配多种场景:

  1. 消费电子:手机、平板充电端口、USB接口、音频接口的浪涌/ESD防护;
  2. 汽车电子:车载传感器、CAN总线接口、车载充电器的过压防护(适配汽车-40℃~+125℃环境);
  3. 工业控制:PLC模块、传感器节点、工业电源的浪涌防护;
  4. 通信设备:路由器、交换机以太网接口、射频端口的ESD/雷击防护。

五、性能优势与使用注意事项

5.1 核心优势

  • 宽温稳定:-55℃~+150℃覆盖极端环境;
  • 快速响应:ns级响应时间(典型<1ns),瞬间钳位过压;
  • 低功耗:1uA漏电流不影响电路正常工作;
  • 高可靠性:200W峰值功率满足多数场景需求。

5.2 注意事项

  • 极性匹配:单向TVS需反向并联,接反会短路;
  • 参数匹配:Vrwm需大于电路正常电压,Vc需低于后级元件耐压;
  • 安装位置:尽量靠近被保护端口,减少引线电感;
  • 焊接规范:避免高温/长时间焊接,防止性能下降。

SMF13A以紧凑封装、宽温特性及可靠防护能力,成为消费电子、汽车、工业等领域电路设计中不可或缺的浪涌保护器件。

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