WMSIC Electronic Components

cjiang FTC252010S3R3MBCA

ModelFTC252010S3R3MBCA
PackageSMD,2x2.5mm
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 FTC252010S3R3MBCA
Type
CJIANG
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJIANG
Electronic Component
FTC252010S3R3MBCA
Electronic Component
1
Package
SMD,2x2.5mm
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.058g
Inductor
3.3uH
Electronic Component
1
Electronic Component
BM0257252674
Current
2.5A
Resistor(DCR)
86mΩ
Electronic Component
Electronic Component
Electronic Component
3000
and Current(Isat)
2.8A

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

FTC252010S3R3MBCA 产品概述

一、产品简介

FTC252010S3R3MBCA 是长江微电(cjiang)推出的一款小型表贴功率电感,额定饱和电流 2.8A,常用电感值 3.3µH,公差 ±20%。封装尺寸为 SMD 2.0×2.5mm(适合高密度贴片布局),定位于低功耗 DC-DC 降压转换、点式电源滤波和电流隔离场合。该器件在体积与电流承载能力之间取得平衡,适用于移动设备、通信模块、LED 驱动与电源管理模块等空间受限的电路。

二、主要电气参数

  • 电感值:3.3 µH(±20%)
  • 额定电流:2.5 A(连续工作条件下的参考值)
  • 饱和电流(Isat):2.8 A(通常定义为电感下降到初始值的某一比例时的 DC 偏置电流)
  • 直流电阻(DCR):86 mΩ
  • 封装:SMD,外形尺寸约 2.0 × 2.5 mm
  • 品牌:cjiang(长江微电)

注:DCR 值对功耗影响显著,按 I^2·R 计算,在 2.5A 连续电流下器件铜损约为 0.54 W,应在系统散热预算中考虑。

三、产品特性与优势

  • 小尺寸:2.0×2.5mm 的封装便于在高密度 PCB 上布局,节省空间。
  • 中等电流能力:2.5A 额定电流适合常见的点对点电源及小功率降压模块。
  • 可接受的饱和裕度:Isat 2.8A,在短时峰值电流或浪涌情况下具有一定余量。
  • 成本/性能平衡:适用于对成本敏感且对体积有较高要求的消费电子及工业类产品。

四、典型应用场景

  • 手机、平板等便携式终端的电源管理(点式负载、去耦)
  • 小功率 DC-DC 降压模块(电流 ≤2.5A)
  • 蓝牙/Wi-Fi 模块及射频前端电源滤波
  • LED 驱动电路(中小功率)
  • 工业控制与传感器供电模块

五、设计与使用建议

  • 电流与温升:由于 DCR 较大,设计时需注意 I^2·R 导致的功耗与温升。若系统允许,应将连续工作电流控制在额定电流以下,并预留裕量(建议连续工作电流 ≤ 80% 的额定值以减少温升与损耗)。
  • 峰值与纹波电流:在开关电源中关注电感承受的峰值电流和纹波电流。若纹波较大或峰值接近 Isat,需考虑更大电流余量的器件。
  • 测试条件:测量电感时应在目标工作频率和加偏流情况下测试交流电感值,以评估在工作点的实际表现(直流偏置会降低电感值)。
  • PCB 布局:尽量将电感与开关管、整流器及输入/输出电容按电流流向紧凑放置,缩短回流环路,减小 EMI;保持良好焊盘连接,必要时在电感周围设计散热铜箔以利热量导出。

六、选型与替代建议

  • 若系统对损耗更敏感或需更高持续电流,建议选择 DCR 更低或 Isat 更高的功率电感进行替代。
  • 若空间允许并需降低热量,选择体积稍大但 DCR 更低的器件可有效降低功耗。
  • 在选择替代型号时应同时考虑封装尺寸、DCR、Isat、频率特性以及磁心材料的温升特性,优先在实际工作温度与偏置电流下比对电感保有量与损耗。

七、测试与可靠性注意

  • 建议在样机阶段进行温升、效率及 EMI 测试,验证在最大纹波与最大工作温度下的性能。
  • 注意返修与回流焊工艺,遵循厂商推荐的回流曲线(若获取不到具体曲线,按常规 SMD 回流温度控制,避免超温导致磁性材料性能退化)。

总结:FTC252010S3R3MBCA 以小尺寸和中等电流能力为特点,适合空间受限的点式电源与滤波应用。在选用时需权衡 DCR 带来的功耗与热管理要求,合理留有电流裕量并进行实际工作点的测试验证。

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