WMSIC Electronic Components

Jingdao Microelectronics US3MB

ModelUS3MB
PackageSMB
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 US3MB
Type
Jingdao Microelectronics
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic
Electronic Component
US3MB
Electronic Component
1
Package
SMB
Electronic Component
Fast Recovery / High-Efficiency Diode
Electronic Component
0.167g
Electronic Component
1
Electronic Component
BM0264086082
Current
3A
Diode
1
Current(Ir)
5uA@1kV
(Vf)
1.68V@3A
Electronic Component
55℃~+150℃
Electronic Component
Electronic Component
Electronic Component
3000

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

US3MB快恢复/高效率二极管产品概述

US3MB是晶导微电子推出的独立式快恢复/高效率二极管,采用SMB(DO-214AA)贴片封装,针对中小功率高频整流、开关电源等场景设计,具备低正向压降、快反向恢复、宽结温范围等核心优势,是消费电子、车载、工业控制等领域的高性价比器件。

一、产品定位与核心属性

US3MB属于快恢复二极管范畴,区别于普通硅整流管(如1N4007),其核心是缩短反向恢复时间,适配高频电路的开关需求;采用独立式单管设计,单个封装集成1只二极管,电路布局灵活,无需考虑多管并联的匹配问题。

二、核心电气参数解析

(一)正向导通特性

  • 正向压降(Vf):1.68V@3A
    相比普通快恢复二极管(同类产品多为1.8V以上),低Vf可显著降低导通损耗,提升电源转换效率(尤其在3A额定电流下)。

(二)反向阻断能力

  • 直流反向耐压(Vr):1kV
    满足中等电压等级(如110V/220V交流整流)的绝缘需求;
  • 反向漏电流(Ir):5uA@1kV
    漏电流极小,反向截止时功耗低,长期工作可靠性高;
  • 反向恢复时间(Trr):75ns
    快恢复核心参数,避免高频下反向恢复损耗过大,支持最高100kHz以上的开关频率(普通整流管Trr>1μs,无法适配高频)。

(三)电流与热特性

  • 持续整流电流(If):3A
    覆盖中小功率应用(如手机充电器、车载USB接口);
  • 非重复峰值浪涌电流(Ifsm):90A(10ms脉冲)
    可承受瞬间过流冲击(如电源启动瞬间),提升电路抗干扰能力;
  • 工作结温范围:-55℃~+150℃
    覆盖工业级及车载级温度需求,适应极端环境(如车载高温、工业低温)。

三、封装与品牌背书

(一)SMB封装特点

SMB(DO-214AA)为贴片式封装,尺寸仅2.7×3.7×1.2mm,体积小巧,适合高密度PCB布局,可降低设备整体体积(如便携充电器、小型逆变器);同时支持自动贴装,生产效率高。

(二)晶导微电子品牌

晶导微电子是国内功率半导体领域的主流厂商,产品经过AEC-Q101(车载级)、GB/T 14023(电磁兼容)等可靠性验证,品质稳定,广泛应用于消费电子、汽车电子、工业控制等领域。

四、典型应用场景

US3MB的参数特性使其适配多类场景:

  1. 开关电源/适配器:手机充电器、笔记本电源、LED驱动电源,高频整流需求下,快恢复特性减少开关损耗,提升转换效率;
  2. 车载电子:车载充电器、车载音响、仪表盘电源,宽温范围(-55~150℃)适应车内高低温环境;
  3. 小型逆变器:太阳能微型逆变器、应急电源(EPS),快恢复二极管降低反向恢复损耗,提升逆变效率;
  4. 消费电子:机顶盒、路由器、智能家电(如扫地机器人),SMB封装便于小型化设计;
  5. 工业控制:小型PLC、传感器模块、电机驱动,宽温及高可靠性满足工业环境需求。

五、性能优势总结

US3MB的核心价值在于均衡的电气性能+小体积封装+高可靠性:

  • 低损耗:低Vf+低Ir,导通/截止损耗均低于同类产品;
  • 高频适配:75ns Trr支持高频开关,避免传统整流管的效率瓶颈;
  • 宽温可靠:-55~150℃结温覆盖极端环境;
  • 易集成:SMB贴片封装适合高密度设计,生产效率高。

综上,US3MB是中小功率高频整流场景的高性价比选择,可替代同类快恢复二极管(如US3A、1N5822等),满足消费电子、车载、工业等多领域的需求。

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