WMSIC Electronic Components

FOSAN RS2MB

ModelRS2MB
PackageSMB
BrandFOSAN
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
FOSAN RS2MB
Type
FOSAN
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
FOSAN
Electronic Component
RS2MB
Electronic Component
1
Package
SMB
Electronic Component
Fast Recovery / High-Efficiency Diode
Electronic Component
0.19g
Electronic Component
1
Electronic Component
BM0264886289
Current
2A
Current(Ir)
5uA@1000V
(Vf)
1.3V@2A
Electronic Component
65℃~+150℃
Electronic Component
Electronic Component
Electronic Component
3000
Voltage Rating(Vr)
1kV

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

RS2MB 产品概述

一、产品简介

RS2MB 是富信(FOSAN)推出的一款快恢复、高效率整流二极管,采用SMB表面贴装封装,面向高压整流和开关电源应用。器件在中大电流工作点具有较低的正向压降(1.3V @ 2A),同时提供高达1000V的反向耐压能力和较小的反向漏电流(5µA @ 1000V),适合高压、耐压要求严格的电源和整流场合。

二、主要电气参数

  • 正向压降(Vf):1.3 V @ IF = 2 A
  • 直流反向耐压(Vr):1000 V(1 kV)
  • 平均整流电流(IF(AV)):2 A(SMB 封装条件下)
  • 反向漏电流(Ir):5 µA @ Vr = 1000 V
  • 反向恢复时间(Trr):500 ns(快恢复类别)
  • 非重复峰值浪涌电流(Ifsm):50 A(单次半波整流浪涌能力)
  • 工作结温范围:-65 ℃ ~ +150 ℃

这些参数表明 RS2MB 在高压场合有良好耐压与漏电控制能力,同时具备中等速度的恢复特性,兼顾效率与抗应力能力。

三、结构与封装

RS2MB 采用 SMB(DO-214AA)表面贴装封装,适合自动化贴装与波峰/回流焊工艺。SMB 封装在中等功率密度与可靠性之间取得平衡,便于在受限空间内实现良好电流承载与散热管理。常见供货形式为卷带(tape & reel),便于生产线连续贴片。

四、热与可靠性特性

  • 器件允许的工作结温范围宽(-65 ℃ 到 +150 ℃),适配工业级温度要求。
  • 虽然 SMB 为表面贴装封装,但为保证长期可靠性与稳定热性能,建议在 PCB 设计中通过增大铜箔面积、使用散热过孔等方式改善热路径,降低结温。
  • 在高浪涌场合(Ifsm 50A)可承受短时冲击,但需注意重复浪涌或高频开关损耗对器件热应力的影响,应按实际温升进行电流热度降额设计。

五、典型应用场景

  • 开关电源(SMPS)高压整流与续流回路
  • 高压整流、HV 电源与充电设备
  • 逆变器、变频器的保护与整流单元
  • 电焊机、电源滤波与吸收回路(配合吸收器件)
  • 工业设备、LED 驱动与功率模块中的高压整流

六、设计与使用注意事项

  • 正向压降 1.3V 在 2A 时已包含部分功耗,设计时应计算功耗 P = Vf × IF 并评估结温上升。
  • Trr = 500 ns 属于快恢复但非超快恢复级别,适用于中等频率(如几十 kHz)开关电源;在更高开关频率下会带来更明显的反向恢复损耗与 EMI,必要时加用缓冲/吸收网络或选用超快/肖特基器件。
  • 反向漏电流 5 µA @ 1000V 表现良好,但在高温下漏电流会增长,需在高温工况下复核漏电影响。
  • 在 PCB 布局上,注意减少寄生电感、在关键回路处放置旁路电容或 RC 缓冲,抑制过压与尖峰。
  • 流程兼容:支持常规无铅回流焊,推荐按供应方的回流温度曲线进行焊接工艺控制。

七、选型对比与建议

  • 若目标应用更注重最低正向压降以提升效率且耐压需求较低,可优先考虑肖特基二极管;若需要更高耐压(>600V)且希望兼顾漏电与反向恢复,则 RS2MB 在 1 kV 等级上具竞争力。
  • 对于极高开关频率或对恢复时间极敏感的场合,建议选择 Trr 更短(几十 ns)的超快恢复或专用低损耗整流器件;但这些器件在高压等级时成本和漏电特性可能受限。

八、包装与订购信息

  • 品牌:FOSAN(富信)
  • 封装:SMB(表面贴装)
  • 常见供货形式:卷带(Tape & Reel),便于SMT制程使用。
    订购时请确认完整料号(RS2MB)与电压、电流等级,同时与供应商核实最新的元件可靠性测试和出货规范。

总结:RS2MB 是一款面向高压整流场景的快恢复二极管,1000V 的反向耐压、较低的正向压降和适中的反向恢复时间,使其在高压开关电源与工业整流领域具有较好的性价比与应用灵活性。

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