WMSIC Electronic Components

JUXING MBR1045DT

ModelMBR1045DT
PackageTO-252
BrandJUXING
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+

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Technical data

Product details

13 specifications

Core information

Product name
JUXING MBR1045DT
Type
JUXING
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
JUXING
Electronic Component
MBR1045DT
Electronic Component
1
Package
TO-252
Electronic Component
0.448g
Electronic Component
1
Electronic Component
BM0265601748
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.

MBR1045DT肖特基二极管产品概述

一、产品基本信息与品牌归属

MBR1045DT是钜兴电子(JUXING) 推出的一款共阴极双管肖特基整流二极管,属于表面贴装型器件。型号命名规则清晰:"MBR"代表肖特基整流管,"10"对应直流平均整流电流10A,"45"对应直流反向耐压45V,"DT"标注TO-252封装。该产品针对低电压、大电流整流场景优化,兼顾效率与可靠性,是中小功率电源设计的常用器件。

二、核心电气与物理参数详解

该器件的关键参数需结合应用场景重点关注:

  1. 正向特性:正向压降(Vf)为600mV@5A(测试条件:正向电流If=5A),此值远低于普通硅整流管(典型1V以上),显著降低导通损耗;直流平均整流电流(If(AV))为10A,可稳定承载中等功率负载(如≤100W电源)。
  2. 反向特性:直流反向耐压(Vr)为45V,满足低压电源系统的反向截止需求;反向漏电流(Ir)为100uA(测试条件:Vr=45V),待机状态下功耗极低,适合低待机功耗设计。
  3. 浪涌与温度特性:非重复峰值浪涌电流(Ifsm)为100A(8.3ms半波脉冲),可有效应对开机冲击或负载突变;工作结温范围为**-55℃~+150℃**,覆盖工业级与汽车电子的高低温环境。

三、封装与引脚配置说明

MBR1045DT采用TO-252封装(又称SOT-252),为3引脚表面贴装结构,尺寸紧凑(典型10.0mm×5.5mm),适合自动化贴装产线。其共阴极配置的引脚定义如下:

  • 引脚1:第一阳极(A1)
  • 引脚2:公共阴极(K)
  • 引脚3:第二阳极(A2)
    焊接时需注意极性(阴极引脚通常带标记),避免接反导致器件击穿损坏。

四、典型应用场景

该产品因低功耗、大电流特性,广泛应用于以下场景:

  1. 开关电源次级整流:如手机充电器、LED驱动电源(≤100W)、机顶盒电源等,低Vf可提升电源转换效率1%-2%;
  2. DC/DC转换电路:低压DC-DC模块(如5V转3.3V)的续流二极管,肖特基二极管的快速恢复特性可减少开关损耗;
  3. 电池充电电路:锂离子电池充电的整流或续流环节,适配45V以内的充电电压;
  4. 小型工业电源:PLC、传感器模块的辅助电源,宽温特性适应车间高低温环境;
  5. 汽车电子辅助电路:车载USB充电、中控屏电源等低压系统,满足汽车级温度要求。

五、性能优势与设计注意事项

(1)核心优势

  • 低损耗高效:600mV正向压降减少导通发热,多数应用无需额外散热片,简化设计;
  • 抗冲击能力强:100A浪涌电流可承受开机瞬间的峰值电流,降低失效风险;
  • 宽温可靠:-55℃~+150℃结温范围,适合极端环境(如北方户外设备、高温车间);
  • 小型化集成:TO-252封装节省PCB空间,适配便携式设备(如移动电源、智能手表充电器)。

(2)设计注意事项

  • 工作时需保证结温不超过150℃,建议PCB上对应阴极引脚区域增加铜箔面积(≥10cm²)散热;
  • 共阴极配置适合双路整流(如全波整流),若需独立二极管应选择单管型号(如MBR1045);
  • 存储时避免潮湿环境,建议常温(25℃±5℃)干燥存放,开封后尽快使用。

六、总结

MBR1045DT作为一款高性价比共阴极肖特基二极管,凭借低Vf、大电流、宽温特性,成为低压中小功率电源设计的优选器件。其TO-252封装适配自动化生产,可满足消费电子、工业控制、汽车电子等多领域需求。

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