WMSIC Electronic Components

DOWO SR05

ModelSR05
PackageSOT-143
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 SR05
Type
DOWO
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DOWO
Electronic Component
SR05
Electronic Component
1
Package
SOT-143
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.038g
Electronic Component
1
Channel Count
Electronic Component
Cj- Capacitor
0.5pF;0.9pF
Electronic Component
BM0264548666
Voltage
17V;16V
Electronic Component
IEC 61000-4-5;IEC 61000-4-2
Current(Ir)
1uA

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

SR05 产品概述

一、产品定位与应用场景

SR05 为 DOWO(东沃)出品的双路单向 TVS 二极管,专为移动终端与便携设备的静电与浪涌保护设计。典型应用包括手机及配件、笔记本电脑、平板、手持设备等对高速信号完整性和低泄漏有严格要求的场合。器件封装为 SOT-143,占板面积小,适配现代紧凑 PCB 布局。

二、主要电气参数(典型/范围)

  • 极性:单向(对地钳位,适用于信号线到地的保护)
  • 通道数:双路(两条独立保护通道)
  • 工作电压 Vrwm:5 V(稳态工作电压)
  • 击穿电压 VBR:约 7.0 – 7.2 V
  • 反向截止电流 Ir:≤ 1 μA(在 Vrwm 下低漏电,有利于电池供电系统)
  • 钳位电压 Vc:约 16 – 17 V(在指定脉冲条件下典型值)
  • 峰值脉冲电流 Ipp(8/20 μs):可达 4 A 或 15 A(依据不同通道/型号条件)
  • 峰值脉冲功率 Ppp(8/20 μs):50 W 或 240 W(依据不同通道/型号条件)
  • 结电容 Cj(典型):约 0.5 – 0.9 pF,最大 0.6 pF(描述中给出低电容特性)
  • 认证/防护等级:满足 IEC 61000-4-2(ESD)与 IEC 61000-4-5(浪涌)要求

注:上述数值为型号资料中给出的典型值/范围,具体通道额定值请参照器件数据表与分选信息以获得精确参数。

三、产品特性与优势

  • 低电容:典型结电容约 0.6 pF(最大值),对高速数据线(如 USB/Type-C 辅助信号、音频、触摸信号等)影响最小,保证信号完整性。
  • 低泄漏:反向漏电≤1 μA,适合电池供电设备,降低待机功耗。
  • 强抗脉冲能力:支持 8/20 μs 波形的脉冲保护,峰值功率与电流等级可覆盖一般的静电放电与浪涌事件。
  • 小封装:SOT-143 小型封装利于高密度布板与自动化贴装。
  • 双路保护:一颗器件保护两条线路,节省 PCB 空间和成本,并便于布线管理。
  • 符合工业标准:通过 IEC 61000-4-2 与 IEC 61000-4-5 相关测试,可靠性高。

四、典型应用与接线建议

  • 应用场景:手机数据线、充电/信号接口、耳机接口、笔电外设接口、摄像头与传感器信号线等。
  • 接线建议:单向 TVS 的阴极端接地,阳极端并联至被保护信号线上(根据封装引脚定义),保证在正向瞬态时进行钳位放电。对高速差分信号,选择两通道并近端接地布置,减少寄生电感与回路面积。
  • 布局注意:尽量将 TVS 放置于防护点靠近连接器处,地线短且粗,避免在地与电源间形成大回路。

五、制造与可靠性建议

  • 焊接:支持回流焊工艺,遵循厂商推荐的温度曲线以防封装应力。
  • 存储与处理:避免静电直接触碰管芯,引脚包装期间采取防静电措施。
  • 热管理:SOT-143 尺寸小,应注意在高脉冲或频繁浪涌场景下评估散热与热寿命。

总结:SR05 以 5V 工作电压、极低结电容与双路保护的组合,适合移动终端与手持设备对抗 ESD 与浪涌干扰的需求。在选型时请结合具体的脉冲能量要求与 PCB 布局,参照完整数据手册以确定对应通道的 Ipp/Ppp 与钳位性能。若需器件详细参数表、封装引脚图或参考电路,可进一步提供以便核对。

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