WMSIC Electronic Components

Jingdao Microelectronics ES2G

ModelES2G
PackageSMA
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
Electronic ES2G
Type
Jingdao Microelectronics
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic
Electronic Component
ES2G
Electronic Component
1
Package
SMA
Electronic Component
Fast Recovery / High-Efficiency Diode
Electronic Component
0.119g
Electronic Component
1
Electronic Component
BM0229356756
Current
2A
Diode
1
Current(Ir)
5uA@400V
(Vf)
1.25V@2A
Electronic Component
55℃~+150℃
Electronic Component
Electronic Component
Electronic Component
5000

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

ES2G 快恢复/高效率二极管(SMA 封装) 产品概述

一、产品简介

ES2G 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,采用常用的 SMA 封装,面向中低功率开关电源与通用整流场合。器件在开关频率较高的电路中可兼顾较低的导通损耗和较短的恢复时间,从而降低开关损耗与电磁干扰(EMI)。

主要参数(典型/额定):

  • 直流反向耐压 Vr:400 V
  • 整流电流(正向连续电流):2 A
  • 正向压降 Vf:1.25 V @ 2 A
  • 非重复峰值浪涌电流 Ifsm:50 A
  • 反向电流 Ir:5 μA @ 400 V
  • 反向恢复时间 Trr:35 ns
  • 工作结温范围 Tj:-55 ℃ ~ +150 ℃
  • 封装:SMA
  • 品牌:晶导微电子

二、主要性能特点

  • 低正向压降:在额定直流整流电流(2 A)时,Vf≈1.25 V,降低导通损耗,适合需要提高效率的功率转换应用。
  • 快速恢复特性:Trr≈35 ns,显著低于传统慢恢复整流器,能减少开关损耗和开关过程的电压尖峰,有利于提高转换效率并抑制 EMI。
  • 较高的浪涌承受能力:50 A 的非重复峰值浪涌电流,能在启动或短时间过载情况下承受较大冲击。
  • 低反向漏电:在400 V反向电压下反向电流仅约5 μA,有利于降低高压开关电源的空载损耗及提高待机效率。
  • 宽温度适应性:-55 ℃ 至 +150 ℃ 的结温范围,适应工业级温度环境和较高工作温度场合。
  • SMA 封装便于自动贴装与焊接,兼顾散热与占板空间。

三、典型应用场景

  • 开关电源(SMPS)整流与续流二极管
  • 电源适配器与充电器输出整流
  • AC/DC 转换器、功率因数校正(PFC)电路的高压整流
  • LED 驱动器整流或续流场合
  • 逆变器、太阳能逆变/整流环节的保护或整流元件
  • 汽车电子(在满足汽车等级可靠性时)和工业控制电源模块

四、设计与布局建议

  • 散热管理:尽管为2 A 等级器件,SMA 封装的热阻相对有限。建议在 PCB 上尽可能拓展焊盘的铜箔面积(尤其是阳极/阴极焊盘),并通过过孔连接多层内层散热铜箔以降低结温。
  • 结温控制:器件工作时应保证结温不超过 +150 ℃。在长期满载或高环境温度下,应考虑降额或提升散热能力。
  • 并联使用注意:若需并联多个器件以提高电流能力,应考虑 Vf 匹配和电流共享问题,推荐在每个器件上增加小电阻以改善均流。
  • 快速恢复相关:在有高 dV/dt 的开关点使用时,器件的 Trr 能有效降低开关损耗;仍建议配合合适的缓冲电路或 RC 吸收网络以进一步抑制尖峰。
  • 焊接/装配:遵循 SMA 封装的常规焊接工艺,避免长期超过允许的焊接温度和时间,防止封装或内部结构损伤。

五、与其它二极管类型的比较

  • 与普通慢恢复整流二极管相比:ES2G 的 Trr 明显更短,能在高频开关中显著降低开关损耗与 EMI;正向损耗也更低。
  • 与肖特基二极管相比:肖特基的 Vf 通常更低(特别在低电压应用),但在高压(400 V 等级)下,肖特基成本高且漏电随温度增长更明显;ES2G 在 400 V 场合有更好的耐压与稳定性,是高压快速整流的折衷选择。

六、可靠性与选型注意事项

  • 推荐在选型时参考晶导微电子的完整数据手册,查看所有典型波形、热阻参数及包装信息,进行电路仿真验证。
  • 在高温或频繁峰值脉冲场合,需考虑长期热循环与热应力对器件寿命的影响,必要时做加速寿命测试。
  • 如需更低导通损耗或更高频率工作,可同时评估高压肖特基或超快恢复系列,综合权衡 Vf、Trr、Ir 与成本。

如需器件的详细电气特性曲线、热阻参数和封装尺寸图,请查阅晶导微电子提供的 ES2G 数据手册或联系供应商获取样片与技术支持。

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