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cjiang FNR4018S1R0MT
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- cjiang FNR4018S1R0MT
- Type
- CJIANG
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- CJIANG
- Electronic Component
- FNR4018S1R0MT
- Electronic Component
- 1
- Package
- SMD
- Type
- Magnetic Display Inductor
- Electronic Component
- Power Inductor
- Electronic Component
- ±20%
- Electronic Component
- 0.216g
- Inductor
- 1uH
- Electronic Component
- 1
- Electronic Component
- BM0257699610
- Current
- 3.3A
- Resistor(DCR)
- 33mΩ
- Electronic Component
- Electronic Component
- Electronic Component
- 3000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
FNR4018S1R0MT 产品概述
一、概述
FNR4018S1R0MT 是长江微电（cjiang）推出的一款面向中大电流开关电源的SMD功率电感。标称电感量为 1.0 μH，公差 ±20%，额定电流 3.3A，饱和电流（Isat）达 5.2A，直流电阻（DCR）仅 33 mΩ。器件采用四方 4×4 mm 封装，磁屏蔽结构，适合紧凑型高效率电源模块中作为储能与滤波元件使用。
二、主要特性
- 电感值：1.0 μH（±20%）
- 额定电流：3.3 A（在规定温升和电感下降限度下长期工作）
- 饱和电流：5.2 A（低电感衰减，适应大电流瞬变）
- 直流电阻：33 mΩ（低损耗，降低 I^2R 发热）
- 封装与安装：SMD，尺寸 4×4 mm，适配自动贴装与回流焊工艺
- 结构：磁屏蔽电感，减小磁场泄漏与对周边器件的干扰
三、应用场景
- 开关稳压器（降压/升压）电源输入或输出储能电感
- 电源管理模块（PMIC）、电源模块（POL）和点对点供电
- 移动设备、通信设备、工业控制及车载电子（非安全关键路径）
- 需要高峰值输出电流、对体积与效率有要求的系统
四、设计与布局建议
- 建议将电感靠近开关器件或负载放置，以缩短开关节点走线，降低寄生电感和 EMI。
- 为降低温升，电感两端应与较大铜箔相连，必要时在下层增加散热地铜与过孔。
- 虽为磁屏蔽结构，但在多线圈邻近排列时仍需留出一定间距避免耦合。
- 推荐使用与器件节拍相匹配的回流焊工艺，按照通用 SMD 元件温度曲线回流，避免过温。
五、可靠性与注意事项
- 在接近或超过额定电流时，器件会因温升和磁饱和导致电感下降，应按实际工作点留有裕量。
- 长期高温环境下电阻及电感可能随温升变化，系统设计应考虑温度系数与散热。
- 建议在样机阶段对目标电路进行电流应力测试与热成像验证，确保实际温升与预期一致。
六、与同类产品的选型要点
- 若空间允许且需更低 DCR 可选更大截面绕线或带磁芯的功率电感；若对 EMI 极敏感，可考虑更高屏蔽等级的器件。
- 对于需要更严格电感容差或更高频率性能的应用，亦可比较不同工艺（如多层或薄膜电感）的规格。
七、订购与技术支持
器件型号：FNR4018S1R0MT，品牌：长江微电（cjiang），封装：SMD 4×4 mm。如需样品、尺寸图或电气测试曲线（L vs I、温升曲线、频率响应），建议联系供应商或厂商技术支持获取完整数据手册与回流焊建议。
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