WMSIC Electronic Components

cjiang FTC303015D220MBCA

ModelFTC303015D220MBCA
PackageSMD,3x3mm
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 FTC303015D220MBCA
Type
CJIANG
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJIANG
Electronic Component
FTC303015D220MBCA
Electronic Component
1
Package
SMD,3x3mm
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.187g
Inductor
22uH
Electronic Component
1
Electronic Component
BM0233319113
Current
1.2A
Resistor(DCR)
700mΩ
Electronic Component
Electronic Component
Electronic Component
3000
and Current(Isat)
1.6A

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

FTC303015D220MBCA 产品概述 — cjiang(长江微电)功率电感

一、产品简介

FTC303015D220MBCA 是长江微电(cjiang)推出的一款面向开关电源与功率滤波场合的 SMD 功率电感。额定电感值 22 μH(公差 ±20%),额定电流 1.2 A,饱和电流(Isat)1.6 A,直流电阻(DCR)约 700 mΩ。封装为 3×3 mm 表面贴装体,适合对体积有严格限制且需要中等电流处理能力的嵌入式与便携式电源设计。

二、主要电气参数(摘要)

  • 电感值:22 μH ±20%(在规定测试条件下)
  • 额定电流:1.2 A(建议连续工作电流上限)
  • 饱和电流(Isat):1.6 A(接近该电流时电感值显著下降)
  • 直流电阻(DCR):700 mΩ(典型值)
  • 封装:SMD,3×3 mm(型号编码 303015 常反映 3.0×3.0×1.5 mm 级别尺寸)
  • 品牌:cjiang(长江微电)

三、性能要点与优势

  • 体积小、适配 SMD 贴片工艺:3×3 mm 封装便于高密度 PCB 布局与自动化生产。
  • 适用于中低频功率滤波:22 μH 的量级适合做输入/输出滤波、能量储存与去耦,尤其是较低开关频率的 DC-DC 变换器。
  • 饱和裕量适中:Isat 为 1.6 A,相较额定 1.2 A 有一定裕量,但仍需注意在高直流偏置条件下电感衰减。
  • 成本与可替换性:作为通用功率电感,适合对成本敏感且对性能要求非极限的批量应用。

四、限制与注意事项(关键提示)

  • 较高的 DCR 导致较大的 I^2R 损耗:700 mΩ 在 1.2 A 时损耗约 1.0 W(P = I^2·R),这会引起明显温升并影响效率。建议在热预算受限或要求高效率的应用中慎重评估,必要时选用 DCR 更低的型号或并联/更大尺寸器件。
  • 电感公差 ±20%:在需要精确滤波或谐振频率控制的场合,应考虑公差影响,必要时进行后期调试或使用更精密的电感。
  • 饱和特性:当电路中直流偏置电流接近 Isat 时,电感值会下降,可能导致输出纹波增大或控制环路稳定性变化。建议保持实际工作电流低于额定值并留有 margin。
  • 温度与频率影响:高温和高频条件下核心损耗与磁性能会变化,设计时应在实际工作条件下验证电感值与损耗。

五、典型应用场景

  • 低至中频 DC-DC 降压(buck)/升压(boost)转换器的能量储存与输出滤波(当工作电流 ≤ 1.2 A 且频率不太高时更合适)。
  • 输入/输出电源滤波、纹波抑制与 EMI 减缓(配合电容与布局优化)。
  • LED 驱动、便携设备电源、传感器模块的局部去耦(需评估功耗与热管理)。
  • 一般功率路径中的滤波扼流圈与噪声抑制元件。

六、选型与应用建议

  • 热预算与效率优先:若系统效率或温升为关键指标,优先选择 DCR 更低或体积更大的电感;或者考虑将多只并联以降低等效 DCR(并联需注意磁耦合与分流问题)。
  • 电流裕度:工作电流应建议取额定电流的 70–80% 以下,避免长期运行在极限条件并预留饱和裕度。
  • 考虑电感公差:在滤波器设计中,将 ±20% 纳入容差分析,必要时通过仿真或样机调整电容/开关频率以满足性能。
  • 实测验证:在目标工作频率、温度与载流条件下测量实际电感、电阻和温升,确保满足长期可靠性。

七、PCB 布局与可靠性建议

  • 紧凑布线并提供热散路径:将电感与相邻电感、电容合理布局,最短电流回路路径以降低 EMI 与寄生电感。
  • 焊盘与回流工艺:遵循元器件厂家的焊盘尺寸与回流温度曲线,避免反复热循环导致焊接缺陷。
  • 机械固定:SMD 小封装在振动环境下需注意焊点强度,必要时增加胶粘固定。
  • 测试与老化:进行温升测试、过流/短路保护验证以及长期老化试验,以评估在实际负载下的行为与寿命。

八、包装与订购提示

FTC303015D220MBCA 作为标准 SMD 功率电感,通常以盘带或卷带形式供应,便于表面贴装生产线直接使用。下单时请确认规格(Inductance、DCR、Isat、封装)与批次一致,并向供应商获取完整的数据手册与回流焊建议曲线以便可靠装配与测试。

总结:FTC303015D220MBCA 提供了小尺寸封装下的 22 μH 存储能力,适合对体积有要求且电流不超过 1.2 A 的电源滤波与去耦场合。设计时重点关注 DCR 带来的功耗与热管理,并在实际工况下进行电气与热性能验证。

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