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muRata GCM155R71E472KA37D
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
18
specifications
Core information
- Product name
- mu Rata GCM155R71E472KA37D
- Type
- MURATA
- Minimum package
- 10000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- MURATA
- Electronic Component
- GCM155R71E472KA37D
- Electronic Component
- 1
- Electronic Component
- 4.7nF
- Package
- 0402
- Electronic Component
- SMD Capacitor(MLCC)
- Electronic Component
- ±10%
- Electronic Component
- 0.015g
- Electronic Component
- 1
- Electronic Component
- BM0263478025
- Electronic Component
- X7R
- Voltage
- 25V
- Electronic Component
- Electronic Component
- Electronic Component
- 10000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
GCM155R71E472KA37D 产品概述
一、基本信息
GCM155R71E472KA37D 为村田（muRata）生产的多层陶瓷电容器，封装为 0402（1005 公制），标称电容量 4.7nF（4700pF），容差 ±10%，额定电压 25V，介质为 X7R（温度系数类 2 种）。适用于高密度贴片设计的去耦、滤波与旁路场合。
二、主要特性
- 小型封装（0402）：占板面积小，适合空间受限的消费电子与移动设备。
- X7R 介质：工作温度范围广（-55°C ～ +125°C），温度引起的电容变化控制在±15%范围内，兼顾体积与电容稳定性。
- 额定 25V：适配多数中低压电源轨与模拟电路需求。
- 容差 ±10%：适用于一般滤波与旁路场景，对精密时序回路不建议使用。
三、应用场景
- 电源去耦与旁路：抑制电源噪声、稳定供电。
- 高频滤波：与电感/电阻配合用于 EMI 滤波、RC 滤波网络。
- 信号耦合与去耦：在对容量精度要求不高的信号链中使用。
- 消费类与工业类产品：手机模组、穿戴设备、物联网终端、通信设备等。
四、选型与设计注意事项
- DC 偏置效应：X7R 为介电常数较高的类 2 陶瓷，受直流偏压时电容会下降，设计时应考虑工作电压下的实际有效电容，关键电路建议测试实测值或留裕量。
- 温度与老化：X7R 在温度与长期使用下会有容值波动与缓慢衰减（对数衰减规律），对精密计时或高精度滤波需谨慎。
- 并联使用：在要求更低 ESL/ESR 或更稳定电容时，可并联多个电容器以获得更佳性能。
- 电压裕量：若需较高稳定性，考虑使用更高额定电压或选用 C0G/NP0 类精密陶瓷，但体积与成本会增加。
五、安装与可靠性建议
- 焊接：建议采用标准回流焊工艺，遵循器件厂商的回流曲线与预热要求，避免过热或快速冷却导致应力。
- 机械应力：0402 尺寸虽小但对 PCB 弯曲与局部应力敏感，设计时避免将电容置于易受挤压或弯曲区域，布线、焊盘设计应有适当圆角与焊量以减少应力集中。
- 修复与返修：回流后尽量减少手工热风多次加热，避免频繁热循环导致可靠性下降。
六、包装与替代
- 包装形式通常为卷带（Tape & Reel），适配自动贴片生产线。
- 替代建议：可根据相同容量、容差、额定电压与温度特性在同尺寸的其他品牌 MLCC 中寻找替代件，但需验证在工作电压与温度下的实际电容与电气特性以保证功能一致性。
总结：GCM155R71E472KA37D 以其超小封装与适中的电容量，适合高密度 PCB 的去耦和滤波需求。设计时需注意 X7R 的 DC 偏置与温度/老化特性，合理留裕量并根据实际应用验证电容在工作条件下的性能。若有具体电路应用与工作电压环境，可提供更多针对性的选型与布局建议。
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