WMSIC Electronic Components

TDD US1D

ModelUS1D
PackageSMA
BrandTDD
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 Option 171427

Available for RFQ

Technical data

Product details

13 specifications

Core information

Product name
TDD US1D
Type
TDD
Minimum package
2000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TDD
Electronic Component
US1D
Electronic Component
1
Package
SMA
Electronic Component
0.088g
Electronic Component
1
Electronic Component
BM0266040331
Electronic Component
Electronic Component
Electronic Component
2000

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

TDD US1D 高速整流二极管产品概述

一、产品核心定位与应用场景

TDD US1D是一款高速快恢复整流二极管,专为中低压高频整流场景设计,核心解决普通整流管反向恢复时间长、高频损耗大的问题。其1A连续整流电流、200V反向耐压的参数组合,覆盖了多数消费电子、工业控制及通信设备的电源整流需求。典型应用包括:

  • 开关电源次级整流(如AC-DC、DC-DC转换模块)
  • 小功率LED驱动电源的整流桥
  • 通信基站/终端的信号处理电路电源
  • 便携式电子设备(充电宝、蓝牙耳机)的充电电路
  • 工业控制板的辅助电源整流

二、关键电气参数详解

US1D的核心参数围绕“高频高效”设计,关键指标如下:

  1. 反向耐压与整流能力:直流反向耐压(Vₐ)200V,连续正向整流电流(I_F(AV))1A,满足12V/24V系统整流需求;峰值浪涌电流(I_FSM)典型值30A(10ms),可承受短时过载。
  2. 反向漏电流:额定反向电压200V下,反向漏电流(I_R)仅5μA,远低于普通整流管(通常mA级),有效降低反向损耗,提升电源效率。
  3. 反向恢复时间:反向恢复时间(tᵣᵣ)50ns,是普通硅整流管(μs级)的1/20以下,大幅减少高频切换时的开关损耗,适合100kHz以上高频应用。
  4. 结温范围:工作结温(Tⱼ)覆盖-55℃至+150℃,宽温特性使其可在工业级环境(户外设备、车载辅助系统)稳定工作,额定电流下无需额外散热。

三、物理特性与封装优势

US1D采用SMA表面贴装封装(符合JEDEC标准),具有以下优势:

  • 体积小型化:封装尺寸2.7mm×1.6mm×1.1mm,比DO-41直插封装小60%以上,适合高密度PCB布局。
  • 焊接兼容性:支持回流焊、波峰焊等常规表面贴装工艺,引脚间距符合行业标准,焊接可靠性高。
  • 独立式设计:单管独立封装,无并联/串联结构,电路设计灵活,可单独使用或组成整流桥。

四、可靠性与环境适应性

TDD作为国产知名元器件品牌,US1D的可靠性符合行业标准:

  • 环保合规:符合RoHS 2.0及REACH标准,无铅无卤,满足绿色电子设计要求。
  • 长期稳定性:低漏电流减少反向热损耗,结温波动小,额定条件下工作寿命可达10万小时以上。
  • 抗干扰能力:封装紧凑,寄生参数小,可降低高频电路中的电磁干扰(EMI)。

五、典型应用电路参考

以12V/1A LED驱动电源为例,US1D的应用逻辑:

  1. AC输入整流:市电220V经EMI滤波后,用1N4007整流为310V直流(高压侧);
  2. 高频变压器次级:变压器次级输出15V交流,用US1D高频整流(开关频率50kHz,需快恢复管);
  3. 滤波稳压:整流后直流经电解电容滤波,再通过DC-DC转换为12V/1A输出,驱动LED灯板。

此电路中,US1D的50ns反向恢复时间可提升电源效率至85%以上,SMA封装节省驱动板空间,适合小型化LED灯具设计。

TDD US1D凭借高频特性、小体积及宽温适应性,成为中低压高频整流场景的高性价比选择,适用于消费电子、工业控制等多领域电源设计。

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