WMSIC Electronic Components

SHIKUES US1MG Rectifier Diode US1MG

ModelUS1MG
PackageSMA
BrandSHIKUES
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
SHIKUES US1MG
Type
SHIKUES
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SHIKUES
Electronic Component
US1MG
Electronic Component
1
Package
SMA
Electronic Component
Fast Recovery / High-Efficiency Diode
Electronic Component
0.116g
Electronic Component
1
Electronic Component
BM0228037960
Current
1A
Diode
1
Current(Ir)
5uA@1kV
(Vf)
1.65V@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.

US1MG 产品概述

一、产品简介

US1MG 是时科(SHIKUES)推出的一款独立式快恢复二极管,采用 SMA(DO-214AC)封装,面向高压整流与中高速开关电路。器件在保持较低正向压降的同时提供 1kV 的反向耐压能力和较快的反向恢复特性,适合需要高效率和耐冲击能力的功率应用场合。

二、主要参数与性能亮点

  • 正向整流电流(If):1A(连续整流)
  • 正向压降(Vf):1.65V @ 1A — 在额定电流下保持相对较低功耗,提升转换效率
  • 反向耐压(Vr):1000V — 适用于高压整流与高压保护
  • 反向电流(Ir):5µA @ 1kV — 低漏电,适合高压工作条件
  • 非重复峰值浪涌电流(Ifsm):35A — 可承受瞬态冲击与浪涌电流
  • 反向恢复时间(Trr):75ns — 属于快恢复范畴,适合中高速开关场合
  • 工作结温范围(Tj):-55℃ ~ +150℃ — 宽温度窗口,提升环境适应性

这些参数使 US1MG 在高压整流、开关电源回路及浪涌保护中有良好表现,兼顾功率损耗与瞬态承受能力。

三、封装与热管理

SMA(DO-214AC)封装体积小、适合表面贴装工艺。尽管器件额定连续电流为 1A,但由于封装体积和热阻限制,实际 PCB 设计时需重视散热:

  • 推荐加大焊盘铜箔面积并通过热过孔连接到内层或底层大铜箔以降低结温;
  • 对于持续高负载或近额定电流工作,建议进行结温计算与热仿真,确保工作结温在可靠范围内;
  • 若用于频繁浪涌或高占空比场合,应预留足够的散热裕量并考虑并联或选用散热更好的封装。

四、典型应用场景

  • 开关电源(SMPS)整流与续流二极管(中等开关频率)
  • 工业与消费类高压电源整流(如高压电源模块)
  • LED 驱动电源与保护回路
  • 电源浪涌保护与整流桥(适合作为单只高压整流元件)
  • 逆变器、马达驱动的自由轮二极管(在满足 Trr 与热管理要求下)

五、选型与使用建议

  • 若系统开关频率较高(如数百 kHz 以上),需评估 75ns 的 Trr 是否满足系统效率与电磁兼容要求;对更高频率可考虑肖特基或超快恢复器件。
  • 在有大电感或负载断开产生高压尖峰的场合,建议配合 RC 吸收、TVS 或适当的阻尼电路以保护二极管并降低电磁干扰。
  • 注意焊接工艺兼容性:SMA 封装一般支持常规回流焊,但请参照厂方推荐的回流温度曲线以避免因过热影响可靠性。
  • 对于长时间接近额定电流工作,应按实际结温进行电流降额设计,保证寿命与稳定性。

六、可靠性与注意事项

  • 器件提供宽温工作范围(-55℃ ~ +150℃),但长期高温工作会加速老化,建议保持结温尽量低于上限并提供良好散热。
  • 反向泄漏在高压下仍低至 5µA,可用于高压低漏电要求的场合,但在高温时泄漏会增加,应在热设计中考虑其影响。
  • 非重复峰值浪涌 35A 可应对短时浪涌,非连续且不可替代稳态过载设计。

七、总结

US1MG(SHIKUES)是一款面向高压整流与中速开关场合的快恢复二极管,1000V 的耐压、1.65V 的正向压降与 75ns 的反向恢复时间在性能与成本之间取得平衡。适用于开关电源、LED 驱动、高压整流与浪涌保护等应用。选型时应关注开关频率、热管理与系统浪涌特性,合理设计 PCB 散热与保护电路,以发挥该器件的稳定性与可靠性。

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