WMSIC Electronic Components

TWGMC US1G Fast Recovery Rectifier US1G

ModelUS1G
PackageSMA(DO-214AC)
BrandTWGMC
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
TWGMC US1G
Type
TWGMC
Minimum package
2000 编带

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TWGMC
Electronic Component
US1G
Electronic Component
1
Package
SMA(DO-214AC)
Electronic Component
Fast Recovery / High-Efficiency Diode
Electronic Component
0.101g
Electronic Component
1
Electronic Component
BM0265826640
Current
1A
Diode
1
Current(Ir)
5uA
(Vf)
1.3V@1A
Electronic Component
55℃~+150℃
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.

US1G快恢复二极管产品概述

一、产品核心身份与定位

US1G是台湾迪嘉(TWGMC)推出的独立式快恢复/高效率二极管,属于1A级中低压整流器件,采用SMA(DO-214AC)表面贴装封装。该产品针对高频开关电路、小型电源等场景设计,核心优势在于快速反向恢复特性与低正向压降的平衡,可满足效率、空间、可靠性的综合需求,是替代普通整流管的优选方案。

二、关键电气参数深度解析

US1G的电气参数围绕“高频高效”与“可靠耐用”设计,核心参数及应用意义如下:

  1. 正向压降(Vf):1.3V@1A
    工作电流1A时的正向压降仅1.3V,比普通硅整流管(部分型号~0.7V?注:快恢复二极管为硅基优化,实际负载下低功耗设计),可减少整流热损耗,避免小封装器件过热,适配高密度电路。
  2. 直流反向耐压(Vr):400V
    反向截止时可承受最大400V直流电压,满足市电(220V)整流后(约310V直流)、小型工业电源等中低压场景的耐压需求,无需额外降额。
  3. 连续整流电流(If):1A
    额定连续正向电流为1A,对应SMA封装的散热能力,可稳定承载手机充电器、LED驱动等典型小功率负载。
  4. 反向漏电流(Ir):5uA
    反向偏置时漏电流仅5μA,远低于行业常规值,有效降低反向功耗,提升电路整体效率,适合对漏电流敏感的精密电路(如医疗电源辅助电路)。
  5. 反向恢复时间(Trr):50ns
    这是快恢复二极管的核心指标——50ns的反向恢复时间(普通整流管为微秒级),可显著减少高频开关时的反向恢复损耗,避免电压尖峰与EMI干扰,适配几十kHz至几百kHz的开关频率(如开关电源次级)。
  6. 非重复峰值浪涌电流(Ifsm):30A
    短时间(典型8.3ms)可承受30A浪涌电流,应对开机瞬间、负载突变等突发电流冲击,降低器件失效风险,无需额外浪涌防护。
  7. 工作结温范围:-55℃~+150℃
    宽温范围覆盖工业级(-40℃~+85℃)、车载级(部分场景)的温度波动,适应极端环境应用(如户外监控电源、车载充电器)。

三、封装与物理特性

US1G采用SMA(DO-214AC)表面贴装封装,具备以下优势:

  • 小尺寸:典型尺寸为2.7mm×1.7mm×1.0mm,节省PCB空间,适合便携式设备(如无线充、智能手表充电器);
  • 自动化贴装:兼容SMT工艺,支持高速贴装,降低生产升本,适配批量制造;
  • 独立式设计:单管封装无并联/串联,电路设计灵活,可根据需求组合使用(如多管并联提升电流)。

四、典型应用场景

结合参数特性,US1G适用于以下场景:

  1. 开关电源次级整流:手机充电器、笔记本适配器、LED驱动电源等,高频开关下的低损耗与快恢复特性提升效率(转换效率可提升2%-5%);
  2. 小型DC-DC转换器:升压/降压电路中的续流二极管,减少开关损耗,优化转换效率(如5V/1A输出的充电宝电路);
  3. 电源适配器与充电器:1A电流满足主流小功率充电需求,400V耐压适配市电整流,无需担心电压击穿;
  4. 工业控制电路:宽温范围适应工业环境,浪涌能力应对电网波动(如PLC电源模块);
  5. 汽车电子辅助电路:车载充电器、仪表盘电源等,宽温特性满足车载温度要求(-40℃~+85℃)。

五、可靠性与环境适应性

US1G的可靠性设计针对实际应用痛点:

  • 宽结温耐受:-55℃~+150℃覆盖极端环境,避免高低温失效,适配户外、车载等场景;
  • 低漏电流:5μA反向漏电流减少反向发热,延长器件寿命(MTBF可达10万小时以上);
  • 浪涌防护:30A非重复浪涌电流应对突发冲击,提升抗干扰能力,降低售后返修率;
  • 封装可靠性:SMA封装的气密性与机械强度,抗振动、抗冲击,适合移动设备与工业场景。

六、品牌与选型价值

台湾迪嘉(TWGMC)作为专业半导体厂商,US1G产品符合国际电子标准,具备以下选型价值:

  • 性能平衡:在1A/400V级别中,快恢复(50ns)、低压降(1.3V)与小封装的平衡,无明显短板;
  • 性价比高:替代同规格进口器件(如部分日系/欧美品牌),成本优势显著(约为进口产品的60%-70%);
  • 批量稳定性:适合家电、电源等批量应用场景,一致性好,降低生产与售后风险。

US1G凭借其“高频高效、小封装、宽温可靠”的特性,成为小型电源、便携设备等领域的主流选型,可满足大多数中低压快恢复整流的需求。

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