WMSIC Electronic Components

ST CS1A331M-CRE77 aluminum electrolytic capacitor

ModelCS1A331M-CRE77
PackageSMD,D6.3xL7.7mm
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
ST CS1A331M-CRE77
Type
SMD, D6.3XL7.7MM
Minimum package
1000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ST
Electronic Component
CS1A331M-CRE77
Electronic Component
1
Electronic Component
330uF
Package
SMD,D6.3xL7.7mm
Electronic Component
SMD Aluminum Electrolytic Capacitor
Electronic Component
±20%
Electronic Component
0.617g
Electronic Component
1
Electronic Component
BM0257383625
Electronic Component
2000hrs@105℃
Operating Temperature
40℃~+105℃
Voltage
10V
Capacitor
6.3mm
Capacitor
7.7mm

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

CS1A331M-CRE77 产品概述

CS1A331M-CRE77 为 ST(先科) 贴片型铝电解电容器,标称容量 330μF,允许偏差 ±20%,额定电压 10V,封装尺寸 D6.3×L7.7mm(SMD)。器件适用于对体积与容量有较高要求的电源滤波与能量储存场合,标称使用寿命 2000 小时(105℃),工作温度范围 -40℃ 至 +105℃。

一、主要参数

  • 容值:330μF ±20%
  • 额定电压:10V
  • 封装:SMD,尺寸 D6.3×L7.7mm
  • 工作温度:-40℃ ~ +105℃
  • 寿命:2000 hrs @ 105℃
  • 品牌:ST(先科)

二、产品特点

  • 小体积大容量:在直径仅 6.3mm、长度 7.7mm 的紧凑封装中实现 330μF 容量,适合集成度高的移动与消费电子设备。
  • SMD 贴片化:支持自动贴片与回流焊,提高装配效率并利于高密度 PCB 设计。
  • 宽温与高温寿命:额定工作温度可达 105℃,并给出 2000 小时的耐热寿命指标,适合较苛刻的工业/车规级环境(需按实际应用做可靠性评估)。
  • 成本与容量优势:相较于陶瓷等无极性电容,在相同体积下可提供更高的电容量,适用于大电流滤波与能量缓冲。

三、典型应用

  • 开关电源输出滤波与能量储存(DC-DC、LDO 后端)
  • 电源输入去耦、整机上电瞬态支持
  • 通信设备、消费类主板与便携式设备的电源滤波

    注意:铝电解电容一般不建议作为高精度信号耦合路径的首选元件,如音频高保真级联路应根据设计需求慎重选型。

四、选型与使用建议

  • 电压与温度裕度:为延长寿命,建议在实际应用中对额定电压与最高工作温度进行适度降额使用(常见做法为额定电压的 60%~80% 以及尽量避免长期靠近最高温度工作点)。
  • ESR 与纹波电流:铝电解电容相对 ESR 较高,应在对纹波电流与热耗敏感的电路中确认是否需并联低 ESR 电容(如钽或陶瓷)以改善瞬态响应。
  • 寿命计算:器件给出 2000 hrs@105℃ 作为高温寿命参考,实际寿命会随温度下降而显著延长(按 Arrhenius 规律)。设计时应按工作环境估算加速老化影响。

五、贴装与可靠性注意

  • 回流焊兼容性:本系列为 SMD 设计,须按照厂商推荐的回流曲线进行焊接,避免超过规定的温度/时间极限。
  • 极性与防反接:为铝电解电容,具有极性标识,安装时必须确保极性正确,避免反接导致电容失效或爆裂。
  • 清洗与维护:回流后清洗应选择对电解液无损害的清洗剂,避免强溶剂或超声清洗对密封造成影响。
  • 储存:避免高温、高湿与直接日晒,长时间储存前建议按供应商说明进行老化或测试。

总结:CS1A331M-CRE77 提供在极小封装下较大的电容值与贴片装配便利,适用于各类需要高密度装配的电源滤波与能量缓冲场景。选型时应综合考虑工作电压、温度、纹波电流与寿命要求,并依据 PCB 布局与散热条件做匹配设计。若需详细电气参数(如 ESR、纹波电流、回流曲线等)或样品评估,建议联系供应商获取完整规格书与可靠性数据。

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