WMSIC Electronic Components

PSA FS55X335K251EHG

ModelFS55X335K251EHG
Package2220
BrandPSA
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

18 specifications

Core information

Product name
PSA FS55X335K251EHG
Type
PSA
Minimum package
500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
PSA
Electronic Component
FS55X335K251EHG
Electronic Component
1
Electronic Component
3.3uF
Package
2220
Electronic Component
SMD Capacitor(MLCC)
Electronic Component
±10%
Electronic Component
0.627g
Electronic Component
1
Electronic Component
BM0264906439
Electronic Component
X7R
Voltage
250V
Electronic Component
Electronic Component
Electronic Component
500

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

FS55X335K251EHG 产品概述

一、产品简介

FS55X335K251EHG 是 PSA(信昌电陶)出品的一款贴片多层陶瓷电容(MLCC),额定电压 250V,标称电容 3.3µF,初始容差 ±10%,介质类型为 X7R,封装为 2220。该器件兼顾了中高电压承受能力与较大容量,适用于对体积、电压与电容密度有一定要求的电源滤波与能量储存场合。

二、主要规格

  • 容值:3.3 µF(标称)
  • 初始容差:±10%
  • 额定电压:250 V DC
  • 介质:X7R(工作温度范围 −55°C 至 +125°C,X7R 在温度范围内电容变化允许值)
  • 封装:2220(约 5.7 mm × 5.0 mm,具体外形以厂方数据为准)
  • 封装形式:贴片(SMD)

三、产品特点

  • 高电压等级:250V 额定电压,适合中高压电源与直流链路应用。
  • 较大容量:3.3µF 在 2220 尺寸下提供较高的电容密度,有利于减小 PCB 占用面积。
  • 温度稳定性较好:X7R 在宽温度范围内维持中等稳定性与较低损耗,平衡成本与性能。
  • 可靠的表面贴装形式,适合自动化贴装与回流焊工艺。

四、典型应用

  • 开关电源输入/输出旁路与滤波(中高压直流侧)
  • PFC(功率因数校正)辅助电路滤波
  • 电机驱动、逆变器及工业电源的旁路与去耦
  • 储能/吸能回路中作为中间电容或缓冲电容

五、封装与机械信息

2220 封装使器件在保持较大电容量的同时仍兼顾可贴装性。实际选型时请参考厂方机械图纸确认尺寸、公差及引脚形貌。建议在 PCB 设计时采用合适的过孔与焊盘设计,考虑贴片应力释放和焊点形状,降低裂纹风险。

六、使用与设计注意事项

  • DC 偏置效应:高介电常数陶瓷在加直流电压时会发生显著容值下降,实际工作电压下的有效电容需由样件测试或参考器件特性曲线评估。
  • 温度依赖:X7R 的温度特性不是恒定不变,极端温度下容值会有变化,请在系统温度范围内验证性能。
  • 机械应力敏感:贴片陶瓷电容对焊接与 PCB 弯曲较敏感,焊接与装配工艺应避免过大机械应力。
  • 微压电效应:在敏感模拟或音频路径上,陶瓷电容可能表现出微音效(microphonic),必要时选用低压电容或其他介质。

七、可靠性与工艺建议

  • 回流焊工艺请遵循 IPC/JEDEC 推荐的温度曲线(最大峰值温度与时长以厂方资料为准),常见最大回流温度为 250–260°C。
  • 焊前清洁、焊膏选择以及回流后检验(X 光、剥离、外观)有助于提升可靠性。
  • 设计冗余:关键电源路径建议并联多只电容或选用适当的电压/容量裕度以降低失效风险。
  • 存储与取放应避免过度振动与挤压,防止包装内器件碰撞导致裂纹。

八、订购与等效替代

如需样品或批量采购,请向 PSA(信昌电陶)经销渠道索取 FS55X335K251EHG 的完整数据手册与可靠性报告。选型时若需替代件,应重点比较在额定电压、容值、介质类型、封装尺寸和 DC 偏置特性下的实际曲线,确保在目标工作条件下满足电路要求。

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