WMSIC Electronic Components

WILLSEMI SPD9105W-2/TR SPD9105W

ModelSPD9105W-2/TR
PackageSOD-323
BrandWILLSEMI
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
WILLSEMI SPD9105W-2 / TR
Type
WILLSEMI
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
WILLSEMI
Electronic Component
SPD9105W-2/TR
Electronic Component
1
Package
SOD-323
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
1pF
Electronic Component
BM0224641079
Operating Temperature
40℃~+85℃
Voltage
18V
Electronic Component
IEC 61000-4-4;IEC 61000-4-5;IEC 61000-4-2

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

SPD9105W-2/TR 产品概述

一、主要性能概述

SPD9105W-2/TR 是 WILLSEMI(韦尔)出品的一款单路双向瞬态抑制二极管(TVS),封装为 SOD-323,采用带卷带(/TR)贴片供货。器件工作电压 Vrwm 为 5V,典型击穿电压 5.6V,钳位电压 Vc 为 18V;对 8/20µs 浪涌脉冲具有 360W 峰值吸收能力,对应峰值脉冲电流 Ipp 为 20A。反向静态电流极小(Ir ≈ 100pA),结电容仅 1pF,工作温度范围 -40℃ 到 +85℃,并满足 IEC 61000-4-2、IEC 61000-4-4、IEC 61000-4-5 等抗干扰标准。

二、功能与特点

  • 双向设计:可同时抑制正负方向的瞬态电压,适合差分或对称线路保护。
  • 低结电容(1pF):对高速数据线影响小,适合 USB、差分高速接口等敏感信号线。
  • 低漏电流(100pA):对低功耗、精密测量电路无显著影响。
  • 高能量吸收:360W(8/20µs)能有效吸收雷击或开关浪涌能量。
  • 紧凑封装 SOD-323:节省 PCB 面积,便于贴片自动化装配。

三、典型应用场景

  • USB、串行接口、TTL/低速差分信号线防护;
  • 工业控制、传感器接口、通信端口的瞬态抑制;
  • 电源线、小信号线路的过电压防护;
  • 各类终端设备入口处的ESD/浪涌防护方案。

四、布局与选型建议

  • 将器件尽量靠近被保护的连接器或引脚放置,以缩短回路并降低寄生感抗。
  • 对于 5V 工作环境(如 USB),Vrwm=5V 与 Vc=18V 的组合能在保护与正常工作间取得平衡;若受保护电路耐压低于 18V,应评估器件钳位电压是否合适。
  • 注意 SOD-323 的散热和焊盘设计,频繁或大能量冲击后需保证可靠焊接与热扩散。
  • 粒度考量到符合 IEC 标准,适用于需要通过抗扰度测试的系统设计。

五、优势小结

SPD9105W-2/TR 以小封装、低电容、低漏电、高能量吸收为主要卖点,特别适合对体积、电容和静态功耗要求较高的接口保护场合,是 5V 级信号与电源线路的理想瞬态抑制选择。

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