WMSIC Electronic Components

Jingdao Microelectronics S5MB

ModelS5MB
PackageSMB(DO-214AA)
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 S5MB
Type
Jingdao Microelectronics
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic
Electronic Component
S5MB
Electronic Component
1
Package
SMB(DO-214AA)
Electronic Component
General Purpose Diode
Electronic Component
0.21g
Electronic Component
1
Electronic Component
BM0226518218
Current
5A
Diode
Electronic Component
Current(Ir)
10uA@1000V
(Vf)
1.1V@5A
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.

S5MB 产品概述

S5MB 为晶导微电子推出的一款通用独立式整流二极管,采用 SMB (DO-214AA) 表面贴装封装。该器件设计用于中高压整流与保护场合,典型电气参数包括:直流反向耐压 1000 V,最大整流电流 5 A,正向压降 1.1 V(IF = 5 A),非重复峰值浪涌电流 200 A,反向电流 10 μA(VR = 1000 V)。工作结温范围宽 (-55℃ ~ +150℃),适合工业级电源及高压整流应用。

一、主要性能参数(关键规格)

  • 器件类型:通用整流二极管(独立式、离散器件)
  • 封装:SMB (DO-214AA),表面贴装
  • 最大整流电流(IF):5 A
  • 正向压降(Vf):1.1 V @ IF = 5 A
  • 非重复峰值浪涌电流(IFSM):200 A
  • 直流反向耐压(VR):1000 V
  • 反向漏电流(IR):10 μA @ VR = 1000 V
  • 工作结温范围:-55 ℃ ~ +150 ℃

二、产品特点与优势

  • 高压耐受:直流反向耐压达 1 kV,适用于高电压整流与保护电路。
  • 大电流能力:连续整流电流 5 A,配合 SMB 封装有良好热裕量。
  • 低正向压降:1.1 V @ 5 A,有助于降低整流损耗与发热。
  • 强冲击耐受:200 A 的峰值冲击电流能力,能承受瞬态浪涌和开机冲击。
  • 宽工作温度:-55 ℃ 至 +150 ℃,适应严苛环境与工业级温度需求。
  • 小型表贴:SMB 封装便于高速贴装与回流焊工艺,适合自动化生产。

三、典型应用场景

  • 开关电源(SMPS)的输出整流与高压整流环节
  • 工业电源、高压电源与电力设备的整流模块
  • 逆变器与电机驱动器的保护与续流路径
  • 配电保护、浪涌抑制及高压整流桥
  • LED 照明驱动、电池充电与充电桩等高压电流路径

四、封装与机械特性

  • 封装形式:SMB (DO-214AA),适配标准 SMT 工艺,可与常规回流焊流程兼容。
  • 安装建议:推荐在 PCB 上预留合适焊盘并增加铜箔散热区(planes / thermal pads),以降低结温并提高长期可靠性。
  • 机械稳定性:SMB 封装在振动与机械冲击环境中具有较好的稳定性,适合工业装配要求。

五、热管理与电流降额建议

  • 虽然器件额定整流电流为 5 A,但实际允许电流受 PCB 散热能力与工作环境温度影响。设计时应:
    • 增加顶层或内层大面积铜箔作为散热通路;
    • 靠近发热区域放置通风或散热器件,必要时使用外部散热结构;
    • 在高温或连续高负载工况下,对额定电流进行适当降额以保证结温不超限。
  • 对于频繁出现浪涌电流的应用,需保证 IFSM 200 A 能在指定脉冲条件下满足冲击要求,并考虑在电路中加入其它浪涌抑制元件以延长使用寿命。

六、典型电路建议

  • 单个二极管用于单向整流:输入端 -> S5MB -> 负载 / 滤波电容。
  • 全桥整流:四只 S5MB 可构成高压整流桥,用于 AC->DC 转换。
  • 续流与保护:在感性负载驱动回路中用作续流二极管或反向保护器件。
  • 浪涌抑制:与 TVS 或压敏电阻并联,用于吸收瞬态高压脉冲,保护下游元件。

七、使用注意事项与可靠性关注

  • 焊接工艺:建议遵循 SMT 回流焊规范与焊接温度曲线,以免对器件引脚和封装造成应力损伤。
  • 环境与储存:高温高湿环境可能影响焊接性与长期可靠性,建议按常规电子元器件湿敏级别进行储运管理。
  • 热循环与机械应力:在高热循环或强振动环境下,需评估焊点和封装疲劳,必要时在设计上采取加固措施。
  • 反向泄漏:在高压长时间偏置下,注意反向电流随温度上升可能增加,设计时留有安全裕度。

八、订购与支持

  • 品牌:晶导微电子(SMD 型号:S5MB)
  • 封装:SMB (DO-214AA),散装或带卷盘可按客户需求提供。
  • 若需器件完整数据手册、封装图纸、回流焊推荐曲线或可靠性测试报告,请联系晶导微电子技术支持或经销渠道获取详细资料与样品支持。

总结:S5MB 是一款面向中高压整流与保护应用的通用二极管,凭借 1 kV 的耐压能力、5 A 的整流电流和较低的正向压降,在电源、工业与高压电子系统中具有良好的性价比与适用性。合理的 PCB 热设计与应用场景匹配可确保其长期稳定运行。

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