WMSIC Electronic Components

ST CS1H2R2M-CRC54 aluminum electrolytic capacitor

ModelCS1H2R2M-CRC54
PackageSMD,D4xL5.4mm
BrandST
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
ST CS1H2R2M-CRC54
Type
ST
Minimum package
2000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ST
Electronic Component
CS1H2R2M-CRC54
Electronic Component
1
Electronic Component
2.2uF
Package
SMD,D4xL5.4mm
Electronic Component
SMD Aluminum Electrolytic Capacitor
Electronic Component
±20%
Electronic Component
0.225g
Electronic Component
1
Electronic Component
BM0230826378
Electronic Component
1000hrs@105℃
Operating Temperature
40℃~+105℃
Voltage
50V
Capacitor
4mm
Capacitor
5.4mm

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

CS1H2R2M-CRC54 产品概述

一、产品简介

CS1H2R2M-CRC54 为贴片型铝电解电容,标称电容值 2.2 µF,允许偏差 ±20%,额定电压 50 V。电容体尺寸为直径 4 mm × 长度 5.4 mm(封装标记 D4×L5.4mm),SMD 形式,品牌为 ST(先科)。该系列器件设计用于高温环境下短期使用,额定寿命为 1000 小时 @ 105℃,工作温度范围为 -40℃ 至 +105℃。典型应用包括开关电源、功率滤波、直流母线旁路与一般直流耦合/解耦场合(注意器件为极性电容,不能用于交流耦合无极性场景)。

二、主要参数概览

  • 电容值:2.2 µF
  • 容差:±20%
  • 额定电压:50 V
  • 封装:SMD(D4×L5.4 mm)
  • 工作温度:-40℃ ~ +105℃
  • 额定寿命:1000 小时 @ 105℃
  • 极性:有(需按极性方向焊接)
  • 品牌:ST(先科)

注:关于等效串联电阻(ESR)、纹波电流等电气特性,请参见厂方完整数据手册以获得精确数值和测试条件。

三、产品特点与优势

  • 小尺寸、高电压:4×5.4 mm 的小体积配合 50 V 的额定电压,适合对空间与电压要求同时存在的设计场合。
  • 高温短期可靠性:1000 小时 @ 105℃ 的寿命指标适合要求在较高温度下仍能维持性能的工业级应用。
  • SMD 贴片化:兼容自动化贴装与回流焊工艺,便于表面贴装生产线集成。
  • 成本与可用性:相比陶瓷或钽电容,在一定容量需求下铝电解通常具有成本优势,适合大量使用场景。

四、应用建议与典型场合

  • 开关电源的输入/输出滤波与能量储存(如 12 V、24 V 等直流母线的滤波)
  • 线性稳压器输出端旁路、功率管理模块的去耦与滤波
  • 一般直流耦合与低频耦合场合(注意极性)
  • 与贴片多层陶瓷电容并用以覆盖宽频带:铝电解负责中低频能量储存,陶瓷电容负担高频去耦与瞬态响应

五、可靠性与寿命推算

  • 标称寿命为 1000 小时 @ 105℃。在实际设计中,可按温度与寿命的经验法则预估:温度每降低 10℃,寿命大致翻倍(此为经验估算,实际值应依据厂方曲线或加速寿命试验校正)。
  • 推荐电压降额使用以延长寿命(建议根据可靠性需求将实际工作电压控制在额定电压的 60%~80% 范围内,具体降额策略请结合系统冗余及厂方建议)。
  • 长期储存或久置后再投入使用时,若电容长期无偏压,可能需要逐步充电“修复”电解膜,具体操作请参照厂方说明书或使用专业试验方法。

六、封装、焊接与装配注意事项

  • 极性识别:贴片铝电解为极性器件,元件外壳或顶端通常有极性标记,设计 PCB 焊盘时应明确正负极标注并在装配过程中严格控制极性。
  • 焊接工艺:适用于表面贴装回流焊,但必须遵循厂方推荐的回流曲线以避免过热损伤。若采用再流或波峰焊工艺,应与供应商确认工艺兼容性。
  • 机械固定:小体积元件仍受振动与冲击影响,长波动或强振动应用需在 PCB 设计中考虑支撑或选用专门的防振粘接工艺。
  • 清洗与化学品接触:回流后如需清洗,应选择对铝电解结构无害的清洗溶剂并避免长时间浸泡。

七、与其他电容类型的比较与选型建议

  • 与陶瓷电容相比:铝电解在中低频能量储存方面更优秀,体积对电容量比更有优势,但 ESR 与寿命、温度特性不及高性能陶瓷;建议两者并用以补全频谱响应。
  • 与钽电容相比:钽电容体积小、稳定性好但成本与不良短路风险不同;铝电解在成本及浪涌放电承受方面有其优势,选型时需权衡稳定性与预算。

八、采购与技术对接

  • 型号:CS1H2R2M-CRC54(请以产品照片、外形尺寸与厂方数据手册为准)
  • 包装形式:常见为卷带(reel)SMD 供料,便于自动贴装。
  • 在批量采购或关键应用前,建议索取并核对厂方完整数据手册(包括 ESR、纹波电流、频率响应、回流焊曲线及寿命加速测试数据),并在必要时要求样品做进线验证与老化测试。

如需我帮您把上述参数整理成 BOM 条目、推荐脚位封装图或给出 PCB 焊盘建议尺寸与回流曲线查找要点,可以告知,我进一步提供具体支持。

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