WMSIC Electronic Components

cjiang FTC322512S2R2MBCD

ModelFTC322512S2R2MBCD
Package1210
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
cjiang FTC322512S2R2MBCD
Type
CJIANG
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJIANG
Electronic Component
FTC322512S2R2MBCD
Electronic Component
1
Package
1210
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.08g
Inductor
2.2uH
Electronic Component
1
Electronic Component
BM0258760356
Current
3.8A
Resistor(DCR)
42mΩ
Electronic Component
Electronic Component
Electronic Component
3000
and Current(Isat)
5A

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

FTC322512S2R2MBCD 产品概述

一、主要技术参数

  • 品牌:cjiang(长江微电)
  • 型号:FTC322512S2R2MBCD
  • 电感值:2.2 μH(公差 ±20%,实际范围约 1.76 μH ~ 2.64 μH)
  • 额定电流(Irated):3.8 A(连续工作时的建议参考值)
  • 饱和电流(Isat):5.0 A(规定的磁通密度下降点)
  • 直流电阻(DCR):约 42 mΩ
  • 封装:1210(公制约 3.2 mm × 2.5 mm,表面贴装)

二、产品简介与核心优势

FTC322512S2R2MBCD 为一款面向中大电流开关电源的功率电感,采用 1210 小型化封装,适合空间受限但要求较高电流能力的电源应用。核心优势包括:

  • 较高的额定和饱和电流(3.8 A / 5 A),适合中高电流点载和降压转换器;
  • 低 DCR(42 mΩ),在同级别电感中有利于降低铜损、提高效率;
  • 紧凑封装便于在多通道或紧凑电源板上布局。

三、典型应用场景

  • 同步/非同步降压型 DC-DC 转换器(点载、主电源)
  • 电源管理模块(PMIC)输出滤波与能量储存
  • 汽车电子(需验证温度/车规版本)与工控电源(对可靠性有更高要求时需确认额外规格)
  • LED 驱动、电池管理系统、通信设备的电源滤波与去耦

四、性能与设计注意要点

  1. 电感容差影响:±20% 的公差在实际电路中会影响截止频率与电流纹波,设计时应以最差情况(最低电感)进行验证,确保纹波电流和峰值电流不致超过器件极限。
  2. 饱和裕量:Isat = 5 A,较 Irated 有约 31% 的裕量,但为保证长期稳定应避免长期接近饱和区间。建议连续工作电流留有 20–30% 的余量,具体取值依据系统温升与效率要求调整。
  3. 损耗计算:以 DCR 42 mΩ 为例,按额定连续电流 3.8 A 计算直流铜损 P = I^2·R ≈ 3.8^2 × 0.042 ≈ 0.61 W;若短时或异常工作到 5 A,损耗约 1.05 W,可能导致显著温升。设计时需评估热耗散路径与周边散热条件。
  4. 频率特性:电感的阻抗随频率上升而增加,开关频率、纹波电流以及磁芯材料将共同决定交流损耗与效率,实际设计建议在目标开关频率下测量交流电感与 Q 值以确认性能。

五、PCB 布局与焊接建议

  • 尽量将电感与开关器件(MOSFET)及输出电容靠近布局,缩短关键回路的环路面积以减少 EMI。
  • 1210 封装适合回流焊工艺,推荐按厂家给出的焊盘扩展与焊膏量进行设计,避免偏位和焊盘浮锡不足。
  • 对于高电流路径,应增大铜厚或使用多层过孔(vias)以降低等效电阻与改善散热。

六、测试与质量控制

  • 电感值测试:用 LCR 表在规定频率(常见 100 kHz 或 1 kHz)测量,注意公差范围。
  • DCR 测试:四线法测量以提高精度。
  • 饱和测试:以电流扫描法测量 L vs I 曲线,确认 Isat 点。
  • 温升与寿命测试:在目标工作电流下进行温升测试及温度循环试验,确认长期可靠性。

七、选型与替代建议

在选型时关注以下因素:实际峰值电流与纹波、允许温升、工作频率、封装尺寸限制及成本。若需要更低 DCR 或更高 Isat,可寻找同尺寸或更大尺寸、不同磁芯材料的替代器件;若空间允许,选择更大封装(例如 1812/2010)可获得更好的热管理与更低损耗。

八、包装与订购提示

  • 常见包装形式:盘带(tape & reel),便于 SMT 自动贴装;订购前确认每盘数量及最小起订量(MOQ)。
  • 采购时请核实完整物料编码、生产批次和检验报告(如需),并根据应用场景确认是否需要额外的高温或车规等级认证。

结语:FTC322512S2R2MBCD 是一款面向中等功率开关电源设计的紧凑型功率电感,凭借 2.2 μH 的电感值与较高的电流能力,适合多种点载与降压应用。设计时应重点关注电流裕量、DCR 引起的功耗与 PCB 散热布局,以保证系统效率与长期可靠性。

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