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cjiang FNR6028S2R2MT
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- cjiang FNR6028S2R2MT
- Type
- CJIANG
- Minimum package
- 2000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- CJIANG
- Electronic Component
- FNR6028S2R2MT
- Electronic Component
- 1
- Package
- SMD
- Type
- Magnetic Display Inductor
- Electronic Component
- Power Inductor
- Electronic Component
- ±20%
- Electronic Component
- 0.525g
- Inductor
- 2.2uH
- Electronic Component
- 1
- Electronic Component
- BM0264590528
- Current
- 4.1A
- Resistor(DCR)
- 20mΩ
- 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.
FNR6028S2R2MT 产品概述
FNR6028S2R2MT 是长江微电（cjiang）推出的一款 SMD 功率电感，采用磁胶屏蔽结构，封装尺寸为 6×6 mm，适合高密度开关电源和电源管理模块的滤波与能量储存。其典型电气参数为：电感值 2.2 μH（容差 ±20%），额定电流 4.1 A，饱和电流（Isat）5.6 A，直流电阻（DCR）约 20 mΩ，表面贴装（SMD）。
一、主要特性
- 电感值：2.2 μH，公差 ±20%；
- 额定电流：4.1 A（连续工作参考值）；
- 饱和电流：5.6 A（大电流时仍可保证不致磁芯饱和）；
- DCR：约 20 mΩ，低阻抗有利于减少铜损和提高效率；
- 封装：SMD，外形 6×6 mm，便于自动贴装和回流焊工艺；
- 结构：磁胶屏蔽，漏磁小，有利于减小对周围元器件的电磁干扰。
二、典型应用
- 同步降压（buck）转换器的储能电感；
- 电源管理模块（PMIC）、模块化电源、DC-DC 电源板；
- 通信基站、服务器、工业控制电源以及高端消费类电子产品的输入/输出滤波；
- 需要高电流、小体积电感的场合。
三、电性能与设计要点
- 在实际电源设计中，应以额定电流 4.1 A 为连续电流参考；当通过电感的直流分量接近或超过 Isat（5.6 A）时，电感值会明显下降，可能影响输出纹波和稳定性，因此设计时需留有裕量。
- 直流电阻约 20 mΩ，可用 P_loss ≈ I^2 × DCR 计算铜损，估算温升并校核散热。
- ±20% 的电感公差要求在 LC 滤波或反馈环路设计里考虑较大的参数变化，必要时在电路中加入补偿或选配更高精度元件。
四、PCB 布局与焊接建议
- 建议尽量缩短电感与开关器件之间的电流回路，降低寄生阻抗和 EMI。
- 在电感下方和周围保留完整的铜平面（GND/热铜），并根据散热需求布设过孔，有助于热量扩散。
- 采用标准无铅回流焊工艺（参照 J-STD-020），建议峰值温度 ≤ 260°C，实际焊接曲线依具体工艺调整。
- 储存与贴装注意防潮包装，遵循厂家出厂包装与回流焊前的防潮规定。
五、选型注意与可靠性
- 若电路中存在较大的直流偏置或纹波电流，应在目标工作点测量电感在 DC bias 下的 L 值，验证满足设计要求。
- 对于对效率和温升敏感的应用，应结合实际工作电流计算铜损并验证器件在该功耗下的温升及长期可靠性。
- 在有严格 EMI 要求的应用中，磁胶屏蔽结构有助于降低外泄磁场，但仍需配合滤波与屏蔽设计达到系统级要求。
结论：FNR6028S2R2MT（长江微电）凭借 6×6 mm 小尺寸、较高额定电流与低 DCR，在中高电流密度的 DC-DC 电源及电源滤波场景中具有良好性价比。设计时关注饱和裕度、温升评估与 PCB 布局，可获得稳定可靠的电源性能。
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