WMSIC Electronic Components

cjiang FNR6045S330MT

ModelFNR6045S330MT
PackageSMD
Brandcjiang
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
cjiang FNR6045S330MT
Type
CJIANG
Minimum package
1500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJIANG
Electronic Component
FNR6045S330MT
Electronic Component
1
Package
SMD
Type
Magnetic Display Inductor
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.834g
Inductor
33uH
Electronic Component
1
Electronic Component
BM0258614536
Current
1.6A
Resistor(DCR)
178mΩ
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.

FNR6045S330MT 产品概述

FNR6045S330MT 是长江微电(cjiang)推出的一款面向电源应用的磁胶屏蔽功率电感,封装为 SMD,外形紧凑(6×6mm)。该器件以 33µH 的感值、较高的额定电流和屏蔽结构为特点,适用于多种开关电源和电源滤波场合,在尺寸、散热与抗干扰之间做了平衡,便于在中小功率点式负载与模块电源中集成使用。

一、主要参数

  • 感量(L):33 µH ±20%
  • 额定电流(Ip 或 Irated):1.6 A(连续工作建议参考值)
  • 饱和电流(Isat):1.8 A(达到此电流时感值会明显下降)
  • 直流电阻(DCR):178 mΩ(典型)
  • 类型:磁胶屏蔽电感(屏蔽化设计,降低磁通外泄与相互干扰)
  • 封装:SMD,尺寸约 6 × 6 mm(适合高密度 PCB 布局)
  • 品牌:cjiang(长江微电)
  • 产品型号:FNR6045S330MT

二、性能与设计亮点

  1. 屏蔽结构:磁胶屏蔽设计有效抑制磁场外泄,减少对相邻电路的干扰,同时有利于器件并排布置,提升系统 EMI 性能。
  2. 高饱和电流:Isat 为 1.8 A,较额定电流有一定裕量,适合短时峰值电流或瞬态负载场景。
  3. 低 DCR:178 mΩ 的直流电阻在此尺寸与感值等级下属于可接受范围,有利于降低直流损耗并提高转换效率。
  4. 封装与兼容性:6×6mm SMD 封装,支持自动贴片与回流焊,便于批量生产和模块化设计。

三、功耗与热管理(示例计算)

电感的直流损耗主要来自 DCR,对于连续额定电流 1.6 A,直流损耗可按 P = I^2 × DCR 估算:

  • P ≈ (1.6 A)^2 × 0.178 Ω ≈ 0.456 W

该损耗在小尺寸器件上会带来较显著的温升,实际温升受 PCB 散热、铜箔面积和环境温度影响。建议在设计时:

  • 保证器件周围有足够的散热铜箔(加大焊盘与热沉铜);
  • 对于连续高电流工作场合,应评估实际温升并适当降额使用。

四、典型应用场景

  • 开关电源(DC-DC 降压/升压)中的能量储存电感(功率电感)
  • 模块化电源与点到点电源(POL)滤波器
  • 电池供电设备的输入/输出滤波与去耦
  • 电源管理 IC 的输出滤波与稳压模块
  • 工业控制、小型逆变器与便携式设备的电源前端

五、PCB 布局与使用建议

  1. 焊盘设计:采用推荐的 SMD 焊盘尺寸,并保证足够焊盘面积,以降低接触电阻并改善散热。
  2. 走线与接地:电感两端的走线应短且宽,中间避免细长走线;若用于滤波结构,靠近电感端的电容应尽量靠近布线以减少环路面积。
  3. 热管理:在电感底部与周围增加散热铜箔或过孔,必要时与散热层连接,以利热量扩散。
  4. 避免磁干扰:虽然器件为屏蔽结构,但关键磁敏感元件(如磁传感器、音频设备)仍应远离或采用额外隔离措施。
  5. 回流焊工艺:遵循常规无铅回流温度曲线,避免超出器件的热循环限制。器件在贴装和回流过程中应注意机械应力与高温影响。

六、选型与注意事项

  • 容差 ±20%:感值稳定性在 ±20% 范围内,适合对初级精度要求不高但对电流等级有要求的功率应用;若需 tighter tolerance(如 ±10% 或 ±5%),请选用相应规格产品。
  • 电流裕度:尽量保持工作电流低于额定 1.6 A,以控制温升并避免进入饱和区;对于具有较大峰值电流的电路,应评估峰值与平均值对磁芯的影响。
  • DCR 与效率权衡:若系统对效率要求更高、损耗更低,应考虑更低 DCR 或更大封装尺寸的电感;若对空间敏感,则 FNR6045S330MT 提供了尺寸与性能的折中方案。
  • 订购与封装:常见为卷带盘装(Tape & Reel)以适配贴片机,采购时请确认包装形式与批次。

总结:FNR6045S330MT 是一款面向中小功率点载荷与开关电源滤波的磁胶屏蔽功率电感,兼顾了体积、抗干扰与电流承载能力。在设计时需关注直流损耗与散热,合理进行电流降额与 PCB 布局,即可在多种电源应用中稳定工作并发挥良好性能。若需更高电流能力、更低 DCR 或更严格感值公差,可咨询供应商以获得替代型号建议。

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