WMSIC Electronic Components

UMW SD03

ModelSD03
PackageSOD-323
BrandUMW
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+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
UMW SD03
Type
UMW
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
UMW
Electronic Component
SD03
Electronic Component
1
Package
SOD-323
Electronic Component
Electronic Component
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.03g
Electronic Component
1
Channel Count
Electronic Component
Cj- Capacitor
450pF
Electronic Component
BM0265570294
Electronic Component
IEC 61000-4-4;IEC 61000-4-2
Current(Ir)
40uA
Voltage(VBR)
4V
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.

UMW SD03 单向瞬态抑制二极管(TVS)产品概述

一、产品定位与核心特性

UMW SD03是友台半导体推出的低电压单向瞬态抑制二极管(TVS),专为3.3V供电系统的ESD/浪涌防护设计,兼具小封装、高功率密度与宽电磁兼容适配性,适合对空间紧凑性要求较高的消费电子、IoT设备等场景。核心特性包括:

  • 单向防护适配单方向过压场景;
  • 低反向截止电压匹配3.3V系统;
  • 350W峰值脉冲功率应对常见瞬态干扰;
  • 符合IEC 61000-4-2/4-4电磁兼容标准;
  • SOD-323小封装支持高密度PCB设计。

二、关键参数深度解析

SD03的参数围绕低电压防护需求优化,核心指标如下:

1. 防护方向与电压阈值

  • 极性:单向,需按电路极性匹配安装(反向截止、正向导通防护);
  • 反向截止电压(Vrwm):3.3V,正常工作时反向漏电流极小,不影响3.3V系统静态功耗;
  • 击穿电压(Vbr):4V,当瞬态电压超过4V时器件快速导通,钳位过压至安全范围,保护后端敏感器件(如MCU、传感器)。

2. 脉冲耐受能力

  • 峰值脉冲功率(Ppp):350W@8/20μs,可承受工业/消费电子常见的浪涌波形(8μs上升/20μs下降),覆盖大部分日常干扰场景;
  • 反向电流(Ir):40μA(@Vrwm),低漏电流特性适合低功耗设备,避免待机电流过高。

3. 电容与通道设计

  • 结电容(Cj):450pF,虽非超高速信号(如USB3.0以上)的最优选择,但适配电源端口、低速接口(耳机、充电口)等场景;
  • 通道数:单路,适合单点防护需求(如单个电源输入、单个传感器接口)。

三、防护性能与标准合规性

SD03通过IEC 61000-4-2(ESD静电放电)与IEC 61000-4-4(EFT电快速瞬变脉冲群) 认证,能有效抑制:

  • 静电放电:接触放电(±8kV)、空气放电(±15kV)等常见等级;
  • 电快速瞬变:重复频率1kHz~1MHz的瞬态脉冲,避免电路误触发或损坏。

其防护机制为:当瞬态过压超过击穿电压时,器件快速从高阻态转为低阻态,将过压钳位并泄放脉冲能量,保护后端电路不受干扰。

四、典型应用场景

SD03的小封装与低电压适配性,使其广泛应用于以下领域:

1. 消费电子

  • 智能手机、平板电脑的充电端口(Type-C/Micro-USB)、耳机接口防护;
  • 智能手表、手环等可穿戴设备的传感器接口(心率、加速度计)与充电口防护。

2. IoT与通信设备

  • 蓝牙模块、WiFi模块的电源输入与低速通信接口(UART、I2C)防护;
  • 智能家居设备(如智能灯泡、传感器节点)的电源端口防护。

3. 工业控制

  • 低电压PLC(可编程逻辑控制器)的输入输出接口防护(需确认电压匹配);
  • 小型工业传感器(如温度、压力传感器)的信号端口防护。

五、封装与可靠性说明

1. 封装特性

  • 封装类型:SOD-323(表面贴装),尺寸为1.6mm×0.8mm×0.8mm,引脚间距0.65mm,适合高密度PCB布局,尤其适合小型化产品;
  • 焊接兼容性:支持回流焊、波峰焊,耐焊接温度符合RoHS标准(无铅工艺)。

2. 可靠性

  • 温度范围:常规TVS器件支持-55℃~125℃(友台半导体工艺保证),适配工业与消费电子的宽温环境;
  • 参数一致性:批量生产参数离散性小,避免因器件差异导致防护能力波动;
  • 寿命:在正常工作电压下,寿命可达10万小时以上,满足长期稳定运行需求。

UMW SD03凭借紧凑封装、精准电压匹配与可靠防护性能,成为3.3V系统ESD/浪涌防护的高性价比选择,适用于对空间与成本敏感的各类电子设备。

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