WMSIC Electronic Components

DOWO M7

ModelM7
PackageSMA(DO-214AC)
BrandDOWO
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
DOWO M7
Type
DOWO
Minimum package
5000

Technical parameters

Electronic Component
DOWO
Electronic Component
M7
Electronic Component
1
Package
SMA(DO-214AC)
Electronic Component
General Purpose Diode
Electronic Component
0.119g
Electronic Component
1
Electronic Component
BM0228536747
Current
1A
Diode
Electronic Component
Current(Ir)
5uA@1kV
(Vf)
1.1V@1A
Electronic Component
55℃~+150℃
Electronic Component
5000
Voltage Rating(Vr)
1kV
Surge Current (Ifsm)
30A

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

M7 通用整流二极管(DOWO 东沃,SMA 封装)产品概述

一、产品简介

M7 为 DOWO(东沃)出品的独立式通用整流二极管,采用 SMA(DO-214AC)表面贴装封装。器件面向常规整流、反向保护与浪涌钳位等广泛应用场景,结构紧凑、可靠性高,适合开关电源、适配器、家电及汽车电子中对 1A 级整流器件的通用需求。

二、主要技术参数

  • 二极管配置:独立式(SMA 封装)
  • 正向压降:Vf = 1.1 V @ IF = 1 A
  • 直流反向耐压:VR = 1000 V
  • 正常整流电流:IF = 1 A(连续)
  • 反向电流:IR = 5 μA @ VR = 1000 V
  • 非重复峰值浪涌电流:Ifsm = 30 A(典型按单次半波浪涌测试)
  • 工作结温范围:Tj = −55 ℃ ~ +150 ℃

三、关键特性

  • 高耐压:1000 V 等级,适合高压整流与阻断场合。
  • 低静态正向压降:1.1 V @1 A,有助于降低整流损耗。
  • 低反向泄漏:在额定反向电压下 IR = 5 μA,保证高压下的漏电性能。
  • 良好浪涌能力:30 A 的峰值浪涌能力可应对起动瞬态或浪涌事件。
  • 宽温度范围:适应工业级高低温环境。

四、典型应用场景

  • 开关电源/整流桥的高压侧整流。
  • 高压直流电源与电池充电设备。
  • 逆变器、变频器中的整流与钳位电路。
  • 反向/极性保护、续流(freewheeling)与浪涌吸收场合(对回复速度要求不高时)。
  • 工业与家电等耐压要求较高的电路。

五、设计与使用注意事项

  • 温度与漏电:反向漏电随结温上升显著增加,设计时需考虑高温工况下的泄漏与热耗散。
  • 热管理:SMA 为小体积封装,散热依赖 PCB 铜箔与焊盘,需在 PCB 布局中提供足够的散热面积并注意焊盘过孔/散热铜面的设计。
  • 浪涌规范:Ifsm 为非重复峰值能力,通常以 8.3 ms 半波标准测得;若存在重复或长时间冲击,需按实际波形与频次进行降额。
  • 恢复特性:M7 属通用整流器件,恢复时间并非超快型,若电路对反向恢复电流敏感(高频开关场合),建议选用快速恢复或肖特基二极管。
  • 安全裕量:实际选型时建议留出 VR 余量(例如 20%~50%)以应对过压脉冲与长期应力。

六、封装与可靠性

SMA(DO-214AC)封装,具有极性带标识,适合自动贴装与回流焊工艺。器件额定工作结温范围达到 −55 ℃ 至 +150 ℃,在工业与汽车类应用中具备良好可靠性。推荐遵循制造商的回流焊曲线与焊接工艺规范,避免长期过热导致性能退化。

七、选型建议与替代件

  • 若需要更低的正向压降或更快的恢复特性,可考虑肖特基或快速恢复二极管。
  • 若需要更高持续电流能力,可选用 SMB/SMC 等更大封装型号。
  • 在高频、高可靠场景(汽车电子)应选用具备相应认证与更严苛热循环测试的等级件。

八、结论

DOWO 的 M7(SMA)是一款耐压高、通用性强的整流二极管,适合大量高压整流与保护场合。选用时关注结温管理、反向漏电随温升的变化以及浪涌降额,结合实际电路工作波形与频次进行合理匹配,可获得稳定可靠的工作表现。若需进一步的电气特性曲线、封装尺寸或焊接建议,建议参考 DOWO 官方数据手册或咨询供应商样品测试。

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