WMSIC Electronic Components

MDD ES1DF

ModelES1DF
PackageSMAF
BrandMDD
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
MDD ES1DF
Type
MDD
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
MDD
Electronic Component
ES1DF
Electronic Component
1
Package
SMAF
Electronic Component
Fast Recovery / High-Efficiency Diode
Electronic Component
0.056g
Electronic Component
1
Electronic Component
BM0226511009
Current
1A
Diode
1
Current(Ir)
5uA@200V
(Vf)
950mV@1A
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.

ES1DF 快恢复/高效率二极管(MDD,SMAF)产品概述

一、产品简介

ES1DF 是一款独立式快恢复/高效率二极管,采用 SMAF 小外形封装,由 MDD 品牌提供。器件面向中低功率整流与回流应用,设计以低正向压降和较快反向恢复为目标,兼顾良好的耐压与低反向泄漏特性,适用于开关电源、适配器、LED 驱动及一般整流电路中需要兼顾效率与成本的场合。

二、主要特性

  • 正向压降:Vf = 0.95 V @ IF = 1 A(低功耗损耗,提升转换效率)
  • 额定整流电流:IF(AV) = 1 A(连续工作能力)
  • 非重复峰值浪涌电流:Ifsm = 30 A(单次浪涌、符合短时冲击要求)
  • 反向耐压:VR = 200 V(高耐压设计,适合中等电压电源)
  • 反向漏电流:IR = 5 μA @ VR = 200 V(低漏电,利于空载效率与低功耗)
  • 反向恢复时间:Trr = 35 ns(快恢复特性,降低开关损耗和电磁干扰)
  • 工作结温范围:Tj = -55 ℃ ~ +150 ℃(宽温度范围,适应多种工作环境)

三、关键电气参数(要点)

  • 低 Vf 有助于在 1 A 工作点降低导通损耗,但应根据系统温升与散热条件评估实际结温下的 Vf 上升。
  • Trr≈35 ns 表明器件适合中高频开关(如几十到数百 kHz)的整流或回路钳位;若在数 MHz 级别高频场景,应考虑更快的肖特基或专用高速恢复器件。
  • Ifsm 为非重复峰值浪涌,适用于开机浪涌、短路冲击等场景,但不可作为连续或频繁冲击载流标准。

四、典型应用

  • 开关电源(SMPS)输出整流与次级回收
  • 适配器与充电器整流桥或单只整流管
  • LED 驱动器整流与反向保护
  • 电机驱动的回馈/自由轮二极管(中低频)
  • 过压/反向保护电路与吸收回路

五、封装与散热建议

  • SMAF 封装体积小,适合空间受限的板上布局,但散热能力受限。推荐在 PCB 上配备较大的铜箔散热区并使用热过孔(thermal vias)引导热量到内层或背铜。
  • 布局建议:将二极管尽量靠近开关元件或整流节点,最短化走线以降低寄生电感,减少浪涌应力与 EMI。
  • 对于连续 1 A 工作电流,应评估结-环境热阻与 PCB 散热,确保结温不超过最大允许值以维持可靠性。

六、使用与可靠性注意事项

  • Ifsm 为非重复峰值浪涌,应避免频繁出现接近 Ifsm 的冲击电流,若有多次浪涌需求请选用更高浪涌能力的型号或并联设计并结合热特性评估。
  • 在高频开关环境下,反向恢复过程会产生电压尖峰,必要时配合 RC/RCD 吸收或缓冲元件以抑制过冲。
  • 储存与焊接按厂方推荐的湿敏等级(MSL)与回流焊工艺执行,避免长时间受潮与超出推荐回流温度曲线。
  • ESD 敏感,运输和装配时采取相应静电防护措施。

七、选型建议与替代

  • 若系统工作频率极高或需更低正向压降,可考虑肖特基二极管以进一步降低 Vf,但通常肖特基在高压下漏电会增大,应权衡。
  • 若需更短反向恢复以降低开关损耗,可选择专用高速恢复系列或同步整流方案。
  • 选型时请参考完整数据手册(datasheet)确认温度依赖特性曲线、典型电气特性曲线及封装机械尺寸,确保满足系统可靠性与认证要求。

如需更详细的电气曲线、封装尺寸图或热阻/寿命测试数据,请告知,我可以协助获取或对比替代型号以便选型验证。

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