WMSIC Electronic Components

EEFCX1E330R

ModelEEFCX1E330R
PackageSMD,7.3x4.3mm
BrandPANASONIC
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
PANASONIC EEFCX1E330R
Type
PANASONIC
Minimum package
3500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
PANASONIC
Electronic Component
EEFCX1E330R
Electronic Component
1
Electronic Component
33uF
Package
SMD,7.3x4.3mm
Type
Electronic Component
Electronic Component
Capacitor
Electronic Component
±20%
Electronic Component
0.221g
Electronic Component
1
Electronic Component
BM0264570347
Electronic Component
2000hrs@105℃
Operating Temperature
55℃~+105℃
Current
3.2A@100kHz
Voltage
25V

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

EEFCX1E330R 产品概述

EEFCX1E330R 是松下(PANASONIC)提供的一款固态聚合物铝电解电容器,额定容量 33 µF,额定电压 25 V,采用 SMD 封装(尺寸 4.3 × 7.3 mm)。该器件在高频环境下表现出较低等效串联电阻(ESR)和较高纹波电流能力,适用于开关电源点位去耦、输入/输出滤波及一般电源稳压模块的去耦和能量缓冲。

一、主要规格与电气特性

  • 容值:33 µF,容差 ±20%
  • 额定电压:25 V DC
  • 类型:固态聚合物(固体电解质)
  • 纹波电流:3.2 A @ 100 kHz
  • 等效串联电阻(ESR):40 mΩ @ 100 kHz
  • 工作温度范围:-55 ℃ ~ +105 ℃
  • 工作寿命:2000 小时 @ 105 ℃
  • 封装 / 尺寸:SMD,4.3 × 7.3 mm
  • 品牌:PANASONIC(松下)

这些参数表现出该型号在高频开关环境下对瞬态电流的承受能力和低损耗特性,适用于对 ESR 和纹波电流有较高要求的应用场合。

二、性能优势与特点

  • 低 ESR:40 mΩ 的等效串联电阻在 100 kHz 工作频率下有利于降低电源滤波中的功率损耗与发热,提高开关稳压器的效率与稳定性。
  • 高纹波电流承受能力:标称 3.2 A(100 kHz)表明在高频开关电源输入/输出侧可有效承受较大的交流分量。
  • 固态聚合物材料:相比传统湿电解电容,固态聚合物具有更低的 ESR、更好的温度稳定性、较小的容值随温度的漂移以及更低的电介质损失。
  • 紧凑 SMD 封装:4.3 × 7.3 mm 的表面贴装形式便于自动贴装与高速回流焊,适合集成度较高的电路板布局。

三、典型应用场景

  • DC-DC 降压/升压转换器的输出端或输入端滤波与去耦
  • CPU / FPGA / ASIC 等点位供电的瞬态响应与去耦电容
  • 电源模块、通信设备与工业控制设备的电源滤波
  • 各类电源管理板的稳压与能量缓冲场合

四、选型与设计注意事项

  • 电压裕度:建议在设计时选用高于工作电压一定裕度的额定电压以保证可靠性和寿命(例如直流工作电压接近额定值时需谨慎)。避免长期在额定电压附近满负荷工作。
  • 温度与寿命:标称寿命为 2000 小时 @ 105 ℃。工作温度每降低约 10 ℃,寿命通常会显著延长(具体倍增关系应参照厂方寿命模型或加速试验数据)。在实际设计中尽量降低器件工作温度以延长寿命。
  • 纹波发热:纹波电流所产生的损耗约为 I_rms^2 × ESR,按照规格 3.2 A 与 40 mΩ 估算,等效损耗接近 0.41 W(此为理论估算,实际应以厂方热升数据与 PCB 散热条件为准)。需关注布局与散热,避免器件过热。
  • 并联使用:若单个器件的纹波承受能力或总电容不足,可通过并联多个相同型号器件来降低等效 ESR 并增加总容值,但应确保 PCB 布局使各并联电容电流路径尽可能对称。

五、封装与安装建议

  • 焊接:适用于标准无铅回流焊;请遵循制造商推荐的回流曲线以避免过高的峰值温度或过长的热循环。
  • PCB 布局:将该电容尽量靠近负载电源引脚放置,减少走线电感;为降低寄生电阻和散热阻抗,可在焊盘下使用适量过孔连接至内/底层铜皮。
  • 机械应力:避免在贴装或后续加工中对电容施加弯曲或剪切力,防止引脚断裂或外壳损伤。

六、可靠性与失效模式

固态聚合物电容相比液体电解电容没有电解液干涸的问题,但仍可能出现以下故障模式:

  • 容值下降或 ESR 增大(长期热应力或过压加速老化)
  • 机械失效(焊点疲劳、封装剥离)
  • 极性误接(反向电压会损伤聚合物电解质;应避免反向电压或交流偏置)

在关键应用中建议做加速寿命试验和在系统层面设计冗余或监测电路以提高可靠性。

总结:EEFCX1E330R 以其低 ESR、高纹波能力与紧凑封装,适合高频开关电源与点位去耦等场合。正确的热管理、合理的电压余量与妥善的 PCB 布局能发挥该型号的最佳性能并延长使用寿命。若需更详细的温度-寿命曲线、封装尺寸图或回流焊规格,建议查询松下官方 datasheet 或联系代理商获取原厂资料。

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