WMSIC Electronic Components

Jingdao Microelectronics US1D

ModelUS1D
PackageSMA
BrandElectronic
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
Electronic US1D
Type
Jingdao Microelectronics
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic
Electronic Component
US1D
Electronic Component
1
Package
SMA
Electronic Component
Fast Recovery / High-Efficiency Diode
Electronic Component
0.12g
Electronic Component
1
Electronic Component
BM0229356813
Current
1A
Diode
1
Current(Ir)
5uA@200V
(Vf)
1V@1A
Electronic Component
55℃~+150℃
Electronic Component
Electronic Component
Electronic Component
5000

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

US1D 产品概述

一、产品简介

US1D 是晶导微电子推出的一款独立式快恢复/高效率整流二极管,采用 SMA 封装,面向通用开关整流与电源管理应用。器件设计兼顾低正向压降与较短反向恢复时间,适用于降低整流损耗并提高开关效率的场景,具有良好的热稳定性与浪涌耐受能力。

二、主要电气与热参数

  • 二极管配置:独立式(Discrete)
  • 正向压降:Vf = 1.0 V @ If = 1 A
  • 整流电流(平均):1 A
  • 非重复峰值浪涌电流:Ifsm = 30 A(一次性脉冲)
  • 直流反向耐压:Vr = 200 V
  • 反向电流:Ir = 5 μA @ 200 V
  • 反向恢复时间:Trr = 50 ns
  • 工作结温范围:Tj = -55 ℃ ~ +150 ℃
  • 封装:SMA(表面贴装,DO-214AC)

以上参数为典型/额定值,具体使用时请参照晶导微电子提供的完整数据手册。

三、特点与优势

  • 低正向压降(1 V @ 1 A):降低导通损耗,提高能效,适合对热耗和效率有要求的电源应用。
  • 快速恢复(Trr ≈ 50 ns):明显减小开关损耗与电磁干扰,相比普通慢恢复整流器在开关电源与高频整流场景表现更佳。
  • 低反向漏电(5 μA @ 200 V):在高压工作下保持较低静态功耗,利于高压隔离与待机功耗控制。
  • 良好浪涌能力(Ifsm 30 A):能承受启动或短时过载脉冲,提升系统可靠性。
  • 宽工作结温范围(-55 ~ +150 ℃):适应工业级温度环境。

四、典型应用场景

  • 开关电源(SMPS)输入/输出整流与续流二极管
  • 充电器、电源适配器的高压整流
  • 电机驱动与感性负载的自由轮二极管
  • 逆变器与功率转换模块的保护与整流
  • 极性保护、夹位保护与通用整流用途

五、封装与热管理建议

US1D 使用 SMA 封装,适配常见表贴生产工艺。建议在 PCB 布局时注意:

  • 尽量缩短高电流路径,减小串联阻抗与电感。
  • 在二极管焊盘周围增加铜箔面积或散热铜皮,以提高导热并降低结温。
  • 若工作电流接近或超出额定值,应评估热阻并考虑采用散热片或更大铜面来进行降温。
  • 将二极管尽量靠近开关器件或整流点放置,减少环路面积以降低 EMI。

封装焊接请遵循晶导微电子的回流焊工艺和存储、搬运规范,避免过度热循环与潮湿引起的焊接缺陷。

六、可靠性与使用注意事项

  • 虽然器件具有良好的浪涌承受能力,但长期在近额定值工作会缩短寿命,建议设计时留有余量。
  • 在高频且大电流的开关环境下,反向恢复过程可能引起电压尖峰,应搭配适当吸收/抑制元件(如 RC、TVS)保护敏感器件。
  • 高温环境下器件漏电与热耗会增加,须关注结温(Tj)并进行热仿真与实测验证。
  • 储存与安装时注意防静电和潮湿防护。

七、选型建议

当项目需要在 200 V 级别进行高效率整流且电流在 1 A 左右、同时希望降低开关损耗时,US1D 是性价比高的选择。若工作电流或频率显著高于此范围,可考虑更大电流或更短恢复时间的功率二极管或肖特基器件;若对反向耐压要求更高,则选择更高 Vr 额定的型号。

晶导微电子 US1D 提供了在通用整流与中高频开关场景下均衡的电气特性与可靠性,适合工业、电源与消费电子等多类产品设计应用。请在最终设计中参考厂商完整数据手册与典型应用电路以确保最佳性能。

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