WMSIC Electronic Components

DOWO SD05C

ModelSD05C
PackageSOD-323
BrandDOWO
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+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
DOWO SD05C
Type
DOWO
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DOWO
Electronic Component
SD05C
Electronic Component
1
Package
SOD-323
Type
ESD
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.031g
Electronic Component
1
Channel Count
Electronic Component
Cj- Capacitor
60pF
Electronic Component
BM0230041550
Operating Temperature
55℃~+125℃
Voltage
15V
Electronic Component
IEC 61000-4-4;IEC 61000-4-2
Current(Ir)
500nA

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

SD05C 瞬态抑制二极管(DOWO/东沃)产品概述

一、产品简介

SD05C 是 DOWO(东沃)推出的一款单路瞬态电压抑制(TVS)二极管,封装为 SOD-323,专为保护敏感电子接口免受静电放电(ESD)和电快速瞬变(EFT)冲击而设计。器件工作电压(反向截止电压)为 5V,反向漏电流极小(Ir 500 nA),击穿电压约为 7V,钳位电压典型 15V,能承受单次 8/20 μs 波形的峰值脉冲功率 450W,对应峰值脉冲电流 30A。工作温度范围宽 (-55℃ ~ +125℃),符合 IEC 61000-4-2(ESD)与 IEC 61000-4-4(EFT)防护等级要求。

二、主要参数一览

  • 类型:ESD TVS 二极管(单路)
  • 反向截止电压 VRWM:5V
  • 击穿电压 Vbr:约 7V
  • 钳位电压(典型):15V
  • 峰值脉冲电流 Ipp:30A(8/20 μs)
  • 峰值脉冲功率 Ppp:450W @8/20 μs
  • 反向电流 Ir:500 nA
  • 结电容 Cj:60 pF
  • 封装:SOD-323(小封装,适合表面贴装)
  • 通道数:单路
  • 工作温度:-55℃ ~ +125℃
  • 防护标准:IEC 61000-4-2,IEC 61000-4-4

三、产品特性与优势

  • 小体积封装(SOD-323),适用于空间受限的移动与便携设备。
  • 低漏电流设计,适合电池供电与低功耗系统。
  • 钳位电压控制良好(约 15V),在大多数 5V 接口出现过压时能有效限幅,保护后级芯片。
  • 对应单次高能量冲击能力强(450W@8/20 μs),对突发静电和浪涌具有良好吸收能力。
  • 结电容 60 pF,适用于多数数字接口,但在超高速差分数据线(如高速 USB/PCIe)使用时需评估对信号完整性的影响。

四、典型应用场景

  • USB、串口、GPIO、键盘/鼠标等 I/O 接口保护
  • 手机、平板、笔记本等消费电子外部接口
  • 工业控制设备、仪表与通讯终端的接口防护
  • 电源和信号线的局部过压保护(单次浪涌或静电事件)

五、设计与布局建议

  • 尽量将 SD05C 靠近受保护引脚放置,以缩短引线和走线长度,减少寄生感抗。
  • 将器件的接地端直接接到低阻抗的近端地平面,避免通过长走线回流,以降低钳位时的地弹降。
  • 在高频或高速接口上使用前,评估 60 pF 的结电容对信号延迟和串扰的影响;必要时选用低容型 TVS 或在保护拓扑中加入串联阻抗元件。
  • 对于频繁或高能量冲击环境,建议在保护电路中配合熔断器、PTC 或级联 TVS 实现更高能量分散。

六、可靠性与使用注意

  • SD05C 设计用于吸收短时瞬态能量,长期承受高频高能冲击会缩短器件寿命,应根据实际环境评估使用频率与能量水平。
  • 焊接时遵循 SOD-323 的回流焊温度曲线,不超过推荐最大回流温度以防器件损伤。
  • 出厂和安装时注意静电防护(ESD),避免器件在非保护环境下遭受破坏性放电。

七、订购信息与替代方案

  • 型号:SD05C;品牌:DOWO(东沃);封装:SOD-323;单路。
  • 若需更低结电容或更高能量承受能力,可考虑低容型或功率更高的 TVS 器件;在选择替代器件时,请对比 VRWM、钳位电压、Ipp / Ppp、结电容及封装尺寸等关键参数。

以上为 SD05C 的简要产品概述与应用建议;在最终设计中,请结合目标系统的电气规范与抗扰度要求,参照器件的详细数据手册进行验证与评估。

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