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CL31A475KB9LNNC MLCC CL31A475KB9LNNC
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
18
specifications
Core information
- Product name
- SAMSUNG CL31A475KB9LNNC
- Type
- SAMSUNG
- Minimum package
- 4000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- SAMSUNG
- Electronic Component
- CL31A475KB9LNNC
- Electronic Component
- 1
- Electronic Component
- 4.7uF
- Package
- 1206
- Electronic Component
- SMD Capacitor(MLCC)
- Electronic Component
- ±10%
- Electronic Component
- 0.074g
- Electronic Component
- 1
- Electronic Component
- BM0265062328
- Electronic Component
- X5R
- Voltage
- 50V
- Electronic Component
- Electronic Component
- Electronic Component
- 4000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
CL31A475KB9LNNC 产品概述
一、基本参数
CL31A475KB9LNNC 为 Samsung（三星）生产的贴片多层陶瓷电容（MLCC），主要参数如下：
- 电容量：4.7 μF
- 额定电压：50 V DC
- 公差：±10%
- 温度特性：X5R（介质特性，-55°C 至 +85°C）
- 封装尺寸：1206（英寸制，3.2 mm × 1.6 mm）
- 封装形式：贴片（SMD），常见为卷带（tape & reel）
二、主要特性
- 大电容量与中高压等级的结合，适合在空间受限但需要较大储能的场合使用。
- X5R 属于 Class II 陶瓷介质，具备较高的介电常数，体积与电容量比高于 NP0/COG，但温度与电压稳定性较差。
- MLCC 本身具有极低的等效串联电阻（ESR）和等效串联电感（ESL），在高频去耦和瞬态响应上表现优异。
- 封装 1206 提供良好的焊接可靠性与机械强度，但仍需注意PCB应力控制以防裂片。
三、典型应用
- 开关电源输入/输出滤波与去耦
- 稳压器（LDO/SMPS）输出旁路与电荷储能
- 汽车电子辅助电源（需符合对应汽车等级时验证环境适应性）
- 工业控制、通讯设备的中等能量滤波场合
四、设计与选型要点
- DC bias（直流偏压）效应：X5R 在较高直流电压下电容量会明显下降，设计时应参考厂商的电容随偏压变化曲线，预留足够裕量。
- 温度特性：X5R 在低温或高温极端下电容量会变化，精确电容需求应考虑采用温度系数更稳定的介质。
- 并联使用：若需降低等效ESR或补偿DC bias效应，可采用并联多个电容组合使用。
- 可靠性裕量：在关键电源回路建议采用额定电压高于工作电压的器件（如 50V 器件用于 12–24V 系统时余量充足）。
五、封装与贴装工艺建议
- 采用推荐的PCB焊盘尺寸与焊膏量，避免过量焊膏导致应力集中。
- 贴片位置应尽量远离板边和有较大弯曲应力的区域，防止热应力或机械应力引起裂纹。
- 推荐遵循元器件厂商的回流焊曲线，避免超温或重复加热。长期贮存后如出现可焊性疑虑，可参考厂商建议进行预烘烤。
六、可靠性与存储
- MLCC 抗热循环与振动能力良好，但对机械冲击和板弯曲敏感，装配时注意夹具与夹紧力。
- 存储环境建议干燥、常温，避免剧烈振动与潮湿；长时间存放后上机前可做外观检查与必要的烘干处理。
- 典型失效模式为机械破裂、电容量随时间（老化）和偏压下降，设计时考虑冗余与容差。
七、采购与技术支持
- 该料号为 Samsung 标准产品，常见包装为带卷供货，订购时注意最小包装数量与批次一致性。
- 在关键应用（汽车、医疗、航天等）使用前，建议向供应商索取详细的电容-电压曲线、温度曲线、可靠性测试报告与样品验证。
如需更详细的特性曲线（DC bias、频率响应、温度特性）或推荐的 PCB land pattern，可提供用途与工作条件，我可根据具体需求给出更精确的选型与布局建议。
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