WMSIC Electronic Components

CJ ES2G

ModelES2G
PackageSMBG
BrandCJ
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
CJ ES2G
Type
SMBG
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJ
Electronic Component
ES2G
Electronic Component
1
Package
SMBG
Electronic Component
Fast Recovery / High-Efficiency Diode
Electronic Component
0.111g
Electronic Component
1
Electronic Component
BM0230879388
Current
2A
Diode
1
Current(Ir)
5uA@400V
(Vf)
1.25V@2A
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.

ES2G 产品概述

一、产品简介

ES2G 是一款独立式(离散)快恢复、高效率整流二极管,适用于中高压开关及整流场合。由 CJ(江苏长电/长晶)出品,采用SMBG封装,设计用于在要求较高的开关速度和较低开关损耗的电源电路中替代传统慢恢复硅整流器。该器件在2A工作电流下正向压降仅约1.25V,同时具备400V的直流反向耐压和较低的反向漏电流,适合通用电源、电机驱动、照明与家电等应用。

二、主要电气参数

  • 二极管配置:独立式(离散器件)
  • 正向压降 (Vf):1.25V @ IF = 2A
  • 直流反向耐压 (Vr):400V
  • 整流电流(平均正向电流):2A
  • 反向电流 (Ir):5 μA @ Vr = 400V
  • 反向恢复时间 (Trr):35 ns(快恢复特性)
  • 非重复峰值浪涌电流 (Ifsm):50A(单次浪涌)
  • 工作结温范围:-55 ℃ ~ +150 ℃

这些参数表明 ES2G 在中等电流和高电压场合具有良好的折衷:既能承受较高的反向电压,又能提供较快的开关响应与较低的正向压降,从而降低导通与开关损耗。

三、封装与机械特性

ES2G 采用SMBG(表面贴装)封装,具有以下优势:

  • 体积小、适合高密度布板的SMT加工;
  • 良好的焊接可靠性,适配自动回流焊工艺;
  • 足够的铜面焊盘面积可用于散热,便于通过印制板铜箔进行热扩散管理。

在设计PCB时,建议在焊盘周围增加散热铜箔或通过孔,以降低结温并提升长期可靠性。

四、热性能与可靠性

  • 在额定整流电流条件下,正向压降为1.25V,对应的稳态功耗约为 2.5W(P = Vf × IF)。长期运行时应对结温进行管控,确保工作点在器件的安全区内。
  • 工作结温范围宽(-55 ℃ 至 +150 ℃),适用于工业级及高温环境,但仍需按实际应用进行温度降额(derating),以延长寿命并避免热失效。
  • 35ns 的反向恢复时间体现出较快的开关能力,能减少开关损耗与器件间的互扰,但在快速开关应用中仍需注意瞬态电流与电压尖峰,必要时配合吸收或缓冲电路(如RC缓冲、TVS或功率二极管并联)以控制冲击。

五、典型应用场景

ES2G 适用于多种需要中等电流、高压、快恢复二极管的场合,例如:

  • 开关电源(SMPS)输出整流或回续二极管;
  • DC-DC 转换器中的整流与钳位;
  • LED 驱动电源、照明电源整流;
  • 电池充电器、电机驱动器中的回流整流;
  • 家电、工业电源模块的高压整流与保护电路。

六、设计与使用要点

  • 散热设计:考虑到在2A工作点下的功耗(约2.5W),应通过增大PCB铜箔面积或增加散热结构降低结温,避免长期高温工作导致参数漂移或寿命缩短。
  • 浪涌与过载:Ifsm = 50A 指定为非重复峰值浪涌能力,适用于短时浪涌(如开机冲击)。设计时应保证系统在经常性冲击场合下对器件进行保护或使用额外滤波/限流措施。
  • 开关瞬态:尽管Trr为35ns属于快恢复范畴,开关瞬态仍会产生反向恢复电流,引起尖峰电压与EMI。建议在高开关频率或对EMI敏感的电路中验证并采用必要的抑制方案(布线优化、RC缓冲或吸收器件)。
  • 反向漏电流:Ir 为 5 μA @ 400V,适用于多数高压整流场合,但在极低待机损耗或高灵敏检测电路中需考虑其影响。

七、替代与选型建议

在选型时可将 ES2G 与其他同类快恢复 2A/400V 器件做综合比较,关注正向压降、反向恢复时间、反向漏电流、峰值浪涌能力与封装形式。SMBG 封装适合表面贴装制造流程;如果系统需要更低正向压降或更快恢复,可考虑功率肖特基二极管或更高速的复合型二极管,但需权衡反向承压与漏电流特性。

总结:ES2G 提供了一组平衡良好的电气特性:低至1.25V的正向压降、400V的反向耐压与35ns的快恢复时间,适合用于中高压开关电源与各类整流场合。合理的热设计与瞬态可控措施可最大化其性能与可靠性。若需进一步数据(例如温度系数、动态特性曲线或封装尺寸图),建议参照厂家完整数据手册或联系供应商获取样品与应用支持。

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