WMSIC Electronic Components

AISHI ERK2HM4R7F12OT

ModelERK2HM4R7F12OT
PackageThrough-hole, D8x L12mm
BrandAISHI
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
AISHI ERK2HM4R7F12OT
Type
AISHI
Minimum package
500 袋

Technical parameters

Electronic Component
Electronic Component
Electronic Component
AISHI
Electronic Component
ERK2HM4R7F12OT
Electronic Component
1
Electronic Component
4.7uF
Package
Through-hole, D8x L12mm
Electronic Component
Through-hole Aluminum Electrolytic Capacitor
Electronic Component
±20%
Electronic Component
1.038g
Pitch
3.5mm
Electronic Component
1
Electronic Component
BM0264335764
Electronic Component
2000hrs@105℃
Voltage
500V
Capacitor
8mm
Capacitor
12mm

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

ERK2HM4R7F12OT 产品概述

一、产品简介

ERK2HM4R7F12OT 是 AISHI(艾华集团)推出的一款直插式铝电解电容器,封装为 D8×L12mm,适用于高压直流滤波与能量存储场合。该型号容值为 4.7µF,额定电压 500V,公差 ±20%,引脚间距 3.5mm,电容体直径 8mm、长度 12mm,额定工作寿命 2000 小时(105℃)。凭借紧凑体积与较高电压等级,适合体积受限且需处理高电压脉动的电源和电子设备中使用。

二、主要规格参数

  • 型号:ERK2HM4R7F12OT
  • 品牌:AISHI(艾华集团)
  • 容量:4.7µF
  • 容差:±20%
  • 额定电压:500V DC
  • 引脚间距:3.5mm(适配直插 PCB 孔距)
  • 电容体尺寸:直径 8mm × 长度 12mm(D8×L12mm)
  • 封装形式:插件/直插(radial lead)
  • 工作温度及寿命:105℃ 下 2000 小时
  • 极性:有极性(电解电容),必须正确接线

三、结构与封装特点

ERK2HM 系列采用传统铝电解结构,内部以氧化铝薄膜作介质,配合电解液实现较高的电容密度与耐压能力。直插式引脚便于手工焊接或波峰焊接装配,3.5mm 的脚距适合常见通孔 PCB 布局,体积紧凑(D8×L12mm)有助于在受限空间内实现高压滤波需求。外表通常标注容值、耐压、极性与批次信息,顶端带排气结构以提高失效安全性。

四、性能特点与优势

  • 高耐压:500V 额定电压满足许多高压电源与开关电源初级滤波的要求。
  • 紧凑体积:D8×L12mm 的小体积在高电压等级中具优势,适合空间受限的设计。
  • 直插封装:便于手工或自动插件与波峰焊接,可靠的机械固定性。
  • 工业级温度寿命:105℃ 下 2000 小时的寿命指标适用于工业级环境与高温工况(需结合实际电压、纹波和温升评估寿命衰减)。
  • 成本与供货:铝电解电容在相同容值/电压下通常具备成本优势,适合批量应用。

注意:铝电解电容具有极性,且在施加直流偏压、温度与频率下电容值与等效串联电阻(ESR)会发生变化,设计时应关注直流偏压效果、纹波电流与散热条件。

五、典型应用场景

  • 开关电源(SMPS)高压母线滤波与能量缓冲
  • 工业电源与逆变器的高压滤波器
  • LED 驱动电源、荧光灯/高压镇流器电源
  • 测试与测量设备高压供电模块
  • 医疗、电力电子等需承受高直流电压的场合(需符合相关安全与可靠性规范)

六、选型建议与使用注意事项

  • 电压与纹波:尽量在额定电压以下适度降额使用,若纹波电流较大,应选型时关注厂商提供的最大纹波电流与 ESR 参数,必要时并联多个电容或选择更高规格元件。
  • 温度与寿命评估:标称寿命 2000 hrs@105℃,实际寿命受工作温度、电压应力和纹波电流影响显著。高温和高纹波会缩短寿命,应尽量降低工作温度并保证良好散热。
  • 极性保护:该电容为有极性器件,禁止接反电压;在可能产生反向脉冲或交流分量的应用中应采取防护措施(如串联二极管或选择无极性元件)。
  • PCB 布局:合理安排散热路径与焊盘,保障电容两端的电流环路短且阻抗低,避免过高局部温升。安装时注意引脚固定,避免机械应力传递至封装。
  • 焊接工艺:遵循厂家推荐的波峰焊或手工焊流程,避免超过允许的加热温度和时间,以免损伤电解液或密封结构。
  • 储存与预处理:长时间储存后使用前可按厂家建议进行检查或形成处理(形成电压),确保电容性能稳定。

七、可靠性与安全提示

铝电解电容在超出额定电压、反向电压或长期超温工作时可能发生泄漏、鼓胀甚至破裂并释放电解液。设计时应保证良好的安全裕量、可靠的极性识别和适当的挡位防护。对于关键应用,建议参考厂商完整的规格书与可靠性试验报告,并在必要时做寿命加速测试以验证系统级可靠性。

总结:ERK2HM4R7F12OT 是一款针对高压、小体积直插场合设计的铝电解电容器,适合用于需要 500V 等级滤波与能量存储的电源与工业设备。选型时应综合考虑工作电压、纹波电流、散热条件及寿命要求,按照厂商规范进行装配与使用。

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