WMSIC Electronic Components

Hottech US2M

ModelUS2M
PackageSMB
BrandHottech
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
Hottech US2M
Type
HOTTECH
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
HOTTECH
Electronic Component
US2M
Electronic Component
1
Package
SMB
Electronic Component
Fast Recovery / High-Efficiency Diode
Electronic Component
0.194g
Electronic Component
1
Electronic Component
BM0264463979
Current
2A
Diode
1
Current(Ir)
5uA@1000V
(Vf)
1.7V@2A
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.

US2M 快恢复整流二极管产品概述

一、产品定位与核心特性

US2M是合科泰(Hottech)推出的通用型快恢复整流二极管,针对中低功率高频整流场景优化设计,核心是平衡“导通损耗”与“开关速度”,适配大多数工业、家电及电源领域的实用需求。其核心特性可总结为:2A连续整流能力+1kV耐压+75ns短恢复时间,既满足常规电流/电压需求,又能应对高频开关场景的效率要求,是替代普通硅整流管(如1N4007)的高频升级选择。

二、关键参数详解

US2M的参数设计围绕“实用可靠”展开,核心参数的实际意义如下:

  1. 正向压降(Vf):1.7V@2A
    导通时的电压损耗,相比普通硅整流管(如1N4007@2A约1.2V)稍高,但因快恢复工艺限制,属于合理范围;实际应用中可通过PCB散热设计降低损耗影响。
  2. 直流反向耐压(Vr):1kV
    反向阻断的最大电压,满足多数220V/380V系统的整流需求(如AC-DC电源的高压侧),且留有一定余量,避免过压损坏。
  3. 整流电流(IF):2A
    连续工作的最大电流,若需应对短时间浪涌(如开机冲击),可承受数倍于2A的峰值电流(具体需参考 datasheet 浪涌参数)。
  4. 反向电流(Ir):5μA@1000V
    反向阻断时的漏电流,数值极低,说明芯片反向阻断性能优异,长期工作不会因漏电流导致过热,提升可靠性。
  5. 反向恢复时间(Trr):75ns
    快恢复二极管的核心指标——从导通切换到反向阻断的时间,75ns远快于普通硅管(Trr≥1μs),能有效减少高频开关时的损耗,避免反向电流过大烧毁电路。
  6. 工作结温范围:-55℃~+150℃
    宽温设计,可适应工业环境的低温(如北方户外设备)及高温(如电源内部散热集中区),无需额外温控措施。

三、封装与可靠性设计

US2M采用SMB封装(DO-214AA),属于表面贴装型,具备以下优势:

  • 体积小巧:相比直插DO-41封装,节省PCB空间,适配小型化电源、控制板;
  • 散热优化:引脚短且焊盘面积合理,通过PCB铜箔可有效导出热量,2A连续工作时无需额外散热片;
  • 可靠性设计:采用环氧树脂封装,防潮、抗机械冲击,符合工业级可靠性要求;芯片工艺成熟,结温范围宽,长期工作故障率低。

四、典型应用场景

US2M的参数特性使其适配多种高频整流场景,常见应用包括:

  1. 开关电源次级整流:如手机充电器、LED驱动电源的输出整流,高频下减少损耗,提升效率;
  2. DC-DC转换器续流:如升压/降压电路中的续流二极管,快恢复特性避免反向电流干扰;
  3. 工业控制辅助电源:PLC、变频器的辅助供电电路,宽温适应工业环境;
  4. 家电控制板:空调、洗衣机的电源模块,满足日常使用的电压/电流需求;
  5. 小型逆变器:如太阳能微逆变器的输出整流,1kV耐压适配低压系统。

五、选型与使用注意事项

  1. 参数匹配:实际工作电流不超过2A(连续),反向电压不超过800V(留20%余量),避免过流/过压;
  2. 散热设计:PCB焊盘需预留足够铜箔(建议≥10mm²),或通过过孔连接底层铜箔,提升散热能力;
  3. 焊接规范:SMB封装采用回流焊时,峰值温度不超过260℃,时间≤30秒;手工焊接需控制温度(≤350℃),避免损坏封装;
  4. 极性识别:SMB封装通常以“色环”或“缺角”标记阴极,焊接时需确认极性,反接会导致二极管击穿;
  5. 存储要求:未焊接器件需存储在干燥环境(湿度≤60%),避免长期暴露在潮湿空气中。

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