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cjiang FNR5040S220MT
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- cjiang FNR5040S220MT
- Type
- CJIANG
- Minimum package
- 1500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- CJIANG
- Electronic Component
- FNR5040S220MT
- Electronic Component
- 1
- Package
- SMD,5x5mm
- Type
- Magnetic Display Inductor
- Electronic Component
- Power Inductor
- Electronic Component
- ±20%
- Electronic Component
- 0.579g
- Inductor
- 22uH
- Electronic Component
- 1
- Electronic Component
- BM0231141117
- Current
- 1.6A
- Resistor(DCR)
- 168mΩ
- Electronic Component
- Electronic Component
- Electronic Component
- 1500
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
FNR5040S220MT 产品概述
一、产品简介
FNR5040S220MT 为长江微电（cjiang）推出的一款磁胶屏蔽功率电感，标称电感量 22 μH ±20%，额定电流 1.6 A，饱和电流（Isat）1.8 A，直流电阻（DCR）168 mΩ。封装为 SMD，外形尺寸 5 × 5 mm，专为中小功率开关电源与电源滤波场景设计，兼顾体积、温升与电流承载能力。
二、主要特性
- 电感值：22 μH ±20%（常温标称值）；
- 额定电流：1.6 A（长期额定，不超过此电流以保证温升和可靠性）；
- 饱和电流：1.8 A（接近或超过此电流时电感量显著下降）；
- 直流电阻：168 mΩ（较低的 DCR 有利于减少铜损）；
- 类型：磁胶屏蔽电感，屏蔽结构降低磁泄漏，便于贴片布局；
- 封装：SMD，5×5 mm，适合自动贴装与回流焊工艺。
三、典型应用
适用于降压型 DC-DC 转换器输出侧电感、功率滤波器、输入电源抑制、便携设备电源管理模块、工控与通信设备的电源模组等场景。尤其适合空间受限但要求中等电流承载能力的板级电源解决方案。
四、选型与使用建议
- 电流裕量：建议工作峰值电流低于 Isat，并将长期平均电流保持在额定电流或以下；若存在较大纹波电流，应按峰值考虑退化；
- 损耗估算：直流损耗约为 P = I^2 × DCR，按额定电流 1.6 A 计算约 0.43 W，需评估散热与温升；
- 直流偏置影响：在直流偏置下电感量会下降，设计时应参考厂商的 L vs IDC 曲线（若有）；
- 布局与焊接：遵循厂商封装和回流温度曲线，PCB 焊盘与沉铜有助于散热，避免过窄走线导致热堆积。
五、可靠性与质量注意
磁胶屏蔽结构在减小磁场外泄方面表现良好，有利于电磁兼容。实际使用中关注长期热循环、震动与回流焊温度对粘结与磁性能的影响，必要时进行样件验证与寿命测试。
六、采购与资料
型号：FNR5040S220MT；品牌：cjiang（长江微电）；封装：SMD 5×5 mm。建议向供应商索取完整数据手册（含 L-IDC 曲线、频率响应、温升数据、封装尺寸图和回流焊工艺建议）以及样品进行板级验证。
七、小结
FNR5040S220MT 是一款面向中小功率应用、尺寸紧凑的磁胶屏蔽功率电感，22 μH、1.6 A 的规格适合多数便携与嵌入式电源模块。选型时注意电流裕度、纹波电流与 DCR 导致的损耗，并根据厂方数据做热与电性能验证，以确保最终设计的稳定与可靠。
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