WMSIC Electronic Components

cjiang FTC303018DR22MBCA

ModelFTC303018DR22MBCA
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 FTC303018DR22MBCA
Type
CJIANG
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJIANG
Electronic Component
FTC303018DR22MBCA
Electronic Component
1
Package
SMD,3x3mm
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.203g
Inductor
220nH
Electronic Component
1
Electronic Component
BM0265139741
Current
10A
Resistor(DCR)
5.5mΩ
Electronic Component
Electronic Component
Electronic Component
3000
and Current(Isat)
17A

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

FTC303018DR22MBCA 产品概述

一、产品简介

FTC303018DR22MBCA 是长江微电(cjiang)推出的一款表面贴装功率电感,尺寸紧凑(SMD, 3×3 mm),额定用于中大电流DC-DC变换及电源滤波场合。标称电感值为 220 nH,公差 ±20%,额定电流 10 A,饱和电流(Isat)17 A,直流电阻(DCR)仅 5.5 mΩ。该器件针对高密度电源设计优化,兼顾低损耗、较高饱和电流和可靠的机械强度,适合开关电源的输入/输出滤波及瞬态大电流应用。

二、关键电气参数与意义

  • 电感值:220 nH ±20%
    适用于开关频率较高(几百 kHz 到 MHz 级)的小电感量输出滤波或阻抗匹配场合。
  • 额定电流(Irated):10 A
    指在规定温升和性能要求下的连续工作电流,应作为长期连续设计的参考上限。
  • 饱和电流(Isat):17 A
    指电感在接近饱和时电流的上限;短时浪涌或瞬态峰值可接近该值,但长期接近可能导致电感值明显下降。
  • 直流电阻(DCR):5.5 mΩ
    低DCR有利于降低导通损耗。以额定电流10 A计算,I^2·R 损耗约为 0.55 W;设计时应考虑散热与温升。

三、典型应用场景

  • 同步降压(Buck)/ 升压(Boost)DC-DC 变换器的输出滤波与电能传输环节。
  • 高电流点对点电源分配(VRM、POL modules)。
  • 输入滤波器、浪涌抑制及电源噪声滤波(与电容配合形成LC滤波)。
  • 汽车电子、工业电源、通信设备和消费类高密度电源模块中要求小体积和大电流的场合。

四、设计与选型建议

  1. 电流余量:长期连续工作建议以额定电流(10 A)为上限;为保证可靠性和降低温升,常见做法是设计工作电流在额定值的 70%–90% 区间内。遇到短时冲击可以允许接近或短暂超过饱和电流(不超过Isat)。
  2. 饱和与直流偏置:高直流偏置电流会导致电感值下降,应在电路仿真或样机测试中验证工作点下的实际电感。若电感值对环路稳定性影响大,应留有裕量或采用更大电感值/更高Isat产品。
  3. 损耗评估:根据 DCR 计算铜耗(I^2·R),并考虑开关频率下的磁心损耗与涡流损耗。示例:10 A 时铜耗约 0.55 W,需做好散热设计。

五、布局与焊接注意事项

  • 布局:尽量缩短电感两端的回流路径,靠近开关器件(MOSFET)和输入/输出电容放置,以减少寄生电感和环路面积,降低 EMI。
  • 铜箔与散热:为降低温升,建议在芯片底部或附近使用更大面积的铜箔与过孔进行散热导出;在双面/多层板上为电感两端焊盘提供足够的铜厚和通孔,以利热量扩散。
  • 焊接:FTC303018DR22MBCA 为常规 SMD 结构,兼容主流回流焊工艺。为保证焊接可靠性,请按供应商推荐的回流曲线与焊膏工艺实施,并在首批样机阶段验证焊点质量及元件完整性。

六、可靠性与环境适配

该系列针对功率应用设计,具有良好的机械强度与电气稳定性。实际使用时应关注工作温度范围、长时间高温下的电感参数漂移以及频繁大电流冲击对寿命的影响。关键场合建议进行高加速寿命试验(HALT/HASS)与热循环测试以确认可靠性。

七、封装与采购信息

  • 封装形式:SMD,3×3 mm(紧凑型,适合高密度布板)
  • 型号示例:FTC303018DR22MBCA(长江微电 / cjiang)
    采购时请确认批次、阻值公差与样片参数;若对高度或其它机械尺寸有严格要求,请向厂商索取详细封装图纸与尺寸公差表。

总结:FTC303018DR22MBCA 以其 220 nH 的电感量、10 A 的额定电流与 17 A 的饱和能力,结合 3×3 mm 紧凑封装与低 DCR,适合用于空间受限但需承载较大电流的电源滤波与变换应用。设计时关注电流余量、散热与布局优化,可以充分发挥其在高密度电源系统中的性能优势。

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