WMSIC Electronic Components

Jingdao Microelectronics RS3MB

ModelRS3MB
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 RS3MB
Type
Jingdao Microelectronics
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic
Electronic Component
RS3MB
Electronic Component
1
Package
SMB
Electronic Component
Fast Recovery / High-Efficiency Diode
Electronic Component
0.167g
Electronic Component
1
Electronic Component
BM0229356809
Current
3A
Diode
1
Current(Ir)
5uA@1kV
(Vf)
1.3V@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.

RS3MB 产品概述

一、产品简介

RS3MB 是晶导微电子推出的一款独立式快恢复/高效率整流二极管,封装为 SMB。器件额定整流电流为 3A,直流反向耐压高达 1kV,典型正向压降为 1.3V(3A 条件下),反向恢复时间约 500ns。该器件针对中高电压、高开关频率的整流与续流应用进行优化,兼顾低正向损耗与较快的恢复特性,适合开关电源、工业电源及高压整流场合。

二、主要电气参数

  • 二极管配置:独立式
  • 整流电流(If):3A(连续)
  • 正向压降(Vf):1.3V @ 3A
  • 非重复峰值浪涌电流(Ifsm):90A(单脉冲)
  • 直流反向耐压(Vr):1000V(1kV)
  • 反向电流(Ir):5µA @ 1kV
  • 反向恢复时间(Trr):500ns
  • 工作结温范围(Tj):-55℃ ~ +150℃
  • 封装:SMB(独立式)

三、产品特性与优势

  • 高耐压:1kV 反向耐压适合高压整流与HV电源应用。
  • 低漏泄:在高压下反向电流仅 5µA(1kV),降低空载损耗与漏电风险。
  • 低正向压降:3A 工作点下 Vf≈1.3V,有利于降低导通损耗与发热。
  • 良好浪涌承受能力:单次峰值 90A,能承受开机/短路瞬态冲击。
  • 中速恢复特性:Trr≈500ns,较快恢复适用于中频率(数十kHz 以内)开关环境,较普通慢恢复二极管效率更高。

四、典型应用场景

  • 开关电源(SMPS)高压整流与续流二极管
  • 工业高压电源与偏置电源
  • 电机驱动中的续流/保护路径
  • LED 驱动与高压整流模块
  • 能量回收、再生制动及高压整流桥

五、热管理与设计注意事项

  • 最大连续整流电流 3A 时,器件功耗约为 P ≈ Vf × If(约 3.9W),需合理设计 PCB 铜面散热或外部散热片以维持结温在安全范围内。
  • 在高脉冲环境下注意 Ifsm 为单次非重复峰值,重复或频繁浪涌会降低器件寿命。
  • 反向恢复时间 500ns 在硬开关条件下可能产生较大电压尖峰,建议在必要时配合 RC 吸收、缓冲或软开关策略减少应力。
  • 推荐在设计中留有足够的爬电距离与绝缘考虑,配合器件的 1kV 等级使用。

六、封装与焊接建议

  • SMB 封装便于手工焊接与自动贴装,器件有明显极性标识(阴极标记),安装时注意方向。
  • 焊接时按照 SMB 的热容与焊接规范控制回流/手工焊接温度轮廓,避免过热导致封装变形或内部应力。
  • 推荐用较大面积的铜箔作为散热垫,并使用多层 PCB 时将散热层接地或连接大铜面以提升热导性能。

七、可靠性与选型建议

  • 对于长期稳定工作,建议在额定值下适当退让(如环境温度高或散热受限时降低持续电流)。
  • 在高频、硬开关或有较大反向恢复能量的场合,可考虑更快恢复(Trr 更小)或肖特基方案以进一步降低开关损耗,若系统工作电压接近 1kV,RS3MB 在耐压、漏电与成本间保持良好平衡。
  • 选型时请参考晶导微电子的完整规格书与封装尺寸图以确保机械与电气匹配。

如需更详细的电气特性曲线、热阻参数或封装尺寸图,可向晶导微电子索取 RS3MB 的完整数据手册,以便进行最终设计验证与可靠性评估。

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