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cjiang FNR3015S180MT
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- cjiang FNR3015S180MT
- Type
- CJIANG
- Minimum package
- 2000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- CJIANG
- Electronic Component
- FNR3015S180MT
- Electronic Component
- 1
- Package
- SMD
- Type
- Magnetic Display Inductor
- Electronic Component
- Power Inductor
- Electronic Component
- ±20%
- Electronic Component
- 0.075g
- Inductor
- 18uH
- Electronic Component
- 1
- Electronic Component
- BM0264799439
- Current
- 720mA
- Resistor(DCR)
- 559mΩ
- Electronic Component
- Electronic Component
- Electronic Component
- 2000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
FNR3015S180MT 产品概述
一、概述
FNR3015S180MT 是长江微电（cjiang）推出的一款磁胶屏蔽功率电感，封装为 SMD，外形尺寸 3.0 × 3.0 mm，标称电感量 18 μH，公差 ±20%。该器件面向低功耗开关电源与电源滤波场合，额定电流和饱和电流均为 720 mA，直流电阻（DCR）为 559 mΩ，适用于对体积和封装高度有较高要求的便携式与嵌入式产品。
二、主要性能与特点
- 电感量：18 μH ±20%；
- 额定电流/饱和电流：720 mA（Isat = 720 mA）；
- 直流电阻：559 mΩ（影响功耗与温升）；
- 封装：SMD，尺寸 3×3 mm，适配高密度 PCB 布局；
- 结构：磁胶屏蔽，降低磁通泄露和相邻器件干扰；
- 典型应用：DC-DC 降压拓扑输入/输出滤波、电源去耦与 EMI 抑制。
三、使用与布局建议
由于 DCR 较大（0.559 Ω），在接近额定电流工作时损耗显著：在 720 mA 时约产生 0.29 W 的铜损（P = I^2·DCR），会导致器件温升，建议连续工况下对电流进行适当降额（典型建议 60%~80% 的额定电流，视散热条件而定）。布局上应将电感尽量靠近开关器件或负载，缩短回流路径，增设宽铜线和过孔以降低寄生阻抗，并避免与敏感模拟电路近距离并排放置。
四、应用建议与选型要点
- 若系统为电池供电、便携式设备或 IoT 节点，FNR3015S180MT 在体积受限且电流需求在数百毫安级别时适合使用；
- 对于需较低纹波电流或更高效率的降压方案，考虑使用 DCR 更低或饱和电流更高的替代型号；
- 选型时关注电感在 DC 偏置下的电感下降特性（L vs I 曲线）与温度特性，必要时向厂商索取 L(I) 曲线和温升试验数据。
五、可靠性与测试建议
建议在设计验证阶段做温升测试（额定与典型工作电流）、直流偏置下电感值测量、并在目标回路中测量纹波电流与效率。贴片回流焊工艺请参照厂方推荐曲线，避免过高峰值温度与长时间回流。
六、典型应用场景
- 便携式电源模块的输出电感；
- MCU 电源的去耦与滤波；
- 低功耗 DC-DC 降压转换器（数百 kHz 以下）；
- EMI 滤波和电源线抑制。
总结：FNR3015S180MT 以紧凑的 3×3 mm SMD 封装和较高的磁屏蔽特性，适合在空间受限且电流需求不超过数百毫安的电源滤波与小功率开关电源应用中使用。选型时重点评估 DCR 导致的功耗与电感在直流偏置下的衰减，以确保系统稳定与热裕度。
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