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cjiang FNR4030S680MT
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- cjiang FNR4030S680MT
- Type
- CJIANG
- Minimum package
- 2000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- CJIANG
- Electronic Component
- FNR4030S680MT
- Electronic Component
- 1
- Package
- SMD,4x4mm
- Type
- Magnetic Display Inductor
- Electronic Component
- Power Inductor
- Electronic Component
- ±20%
- Electronic Component
- 0.338g
- Inductor
- 68uH
- Electronic Component
- 1
- Electronic Component
- BM0233267885
- Current
- 570mA
- Resistor(DCR)
- 1.128Ω
- 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.
FNR4030S680MT 产品概述
一、基本参数
FNR4030S680MT 为 cjiang（长江微电）推出的一款磁胶屏蔽功率电感，主要参数如下：
- 电感值：68 μH ±20%
- 额定电流（Irated）：570 mA
- 饱和电流（Isat）：800 mA（L下降至规定值时）
- 直流电阻（DCR）：1.128 Ω
- 类型：磁胶屏蔽，SMD 封装
- 封装尺寸：4 × 4 mm（四面贴片）
二、产品特性
该器件属于中小尺寸功率电感，屏蔽结构有助于降低磁泄漏和相邻元件干扰，适用于体积受限但对磁耦合有要求的电路。68 μH 的电感值在滤波、降噪及能量存储场合较为常用。注意其 DCR 相对偏高，在中等电流下会产生可观的功耗与发热。
三、典型应用
- 开关电源（如降压转换器）中的输入/输出滤波
- EMI 滤波器与共模/差模噪声抑制（结合电容使用）
- LED 驱动、电池管理与便携设备的能量存储环节
- 高频干扰抑制与信号完整性优化场景
四、选型与使用建议
- 工作电流尽量低于额定电流 Irated（570 mA），避免长期接近 Isat（800 mA），以免电感值显著下降。
- 按 DCR 计算功耗：在 Irated 下 P≈I^2·R≈0.57^2×1.128≈0.37 W；在 Isat 下 P≈0.8^2×1.128≈0.72 W，需评估散热与环境温度对电感性能的影响。
- 布局时将电感与热源、敏感信号隔离，保证散热通道和足够的铜箔面积，必要时在下层放置过孔以增强散热。
- 测量电感值时注意 DC 偏置会降低有效电感，建议在目标工作电流下验证实际 L 值。
- 参考制造商推荐的 PCB 封装尺寸与回流焊工艺（无铅回流曲线），避免超温或长时间高温导致性能退化。
五、热管理与可靠性
由于 DCR 较大，器件在较高电流下会产生明显发热，应评估在实际工况下的温升并确保不超过长期允许温度。设计时考虑空气对流、周围铜箔面积及器件间距，必要时采取散热片或改用更低 DCR 的替代型号。
六、替代与采购建议
选型替代时关注尺寸、Irated、Isat、DCR 与屏蔽结构的匹配。采购时选择正规的渠道获取完整数据手册，核实回流焊温度限制、包装（卷带）与批次一致性，必要时索要样品进行实测验证。
总结：FNR4030S680MT 以 4×4 mm 小封装提供较大感值与合理的电流能力，适合空间受限的滤波和降噪应用，但因 DCR 较高需重视功耗与热管理，推荐在实际电流条件下做性能验证后投入量产。
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