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cjiang FHD4012S-2R2MT FHD4012S
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- cjiang FHD4012S-2R2MT
- Type
- CJIANG
- Minimum package
- 4500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- CJIANG
- Electronic Component
- FHD4012S-2R2MT
- Electronic Component
- 1
- Package
- SMD
- Electronic Component
- Power Inductor
- Electronic Component
- ±20%
- Electronic Component
- 0.159g
- Inductor
- 2.2uH
- Electronic Component
- 1
- Electronic Component
- BM0264754164
- Current
- 3A
- Resistor(DCR)
- 75mΩ
- Electronic Component
- Electronic Component
- Electronic Component
- 4500
- and Current(Isat)
- 3.3A
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
FHD4012S-2R2MT — 2.2µH 功率电感器产品概述
一、产品简介
FHD4012S-2R2MT 为长江微电（cjiang）系列 SMD 功率电感，标称电感值 2.2µH，公差 ±20%，封装尺寸 4×4mm（4012 尺寸）。该器件针对中小功率开关电源及电源滤波场合设计，额定电流 3A，饱和电流（Isat）3.3A，直流电阻（DCR）约 75mΩ，适合要求体积小、承载电流较高且对损耗有控制需求的应用。
二、主要性能参数
- 电感值：2.2µH（±20%）
- 额定电流（Irated）：3A
- 饱和电流（Isat）：3.3A（定义为电感下降到初始值一定比例时的电流）
- 直流电阻（DCR）：75mΩ（典型）
- 封装形式：SMD，外形约 4×4mm
这些参数决定了器件在开关电源中的输出滤波和储能能力，以及在高直流偏置下的稳定性和损耗水平。
三、特性与优点
- 小型化封装：4×4mm 占板面积小，便于高密度布局。
- 高电流能力：3A 的额定电流配合 3.3A 的饱和电流边界，适合 1A~3A 级别的降压/升压转换器。
- 低 DCR：75mΩ 有利于降低铜损，提高效率；在满载时仍需关注发热。
- 可靠性：SMD 结构适配回流焊工艺，适合自动化贴装。
四、应用场景
- DC-DC 降压/升压转换器（电源模块）
- 电动工具与电机驱动的局部滤波
- LED 驱动电源
- 通信设备和消费电子的电源管理
- 汽车电子子系统（须确认工作温度与可靠性要求）
五、设计与使用注意事项
- 电流裕量：建议工作电流不超过额定电流 3A，并在设计时预留裕量以避免接近 Isat（3.3A）导致电感骤降和效率下降。
- 损耗估算：在额定电流下，铜损约 P = I^2·DCR = 3^2×0.075 ≈ 0.675W，设计散热和旁路时应考虑此热源。
- 直流偏置效应：随直流电流增加，电感值会下降，靠近饱和电流时下降更明显。对电感值稳定性要求较高的场合应做电流-电感曲线验证。
- PCB 布局：靠近电源开关元件放置，减小环路面积；焊盘与散热铜箔配合以利散热；遵循厂家推荐的焊盘尺寸和回流曲线。
- 环境与可靠性：在高温或脉冲大电流情况下应进行热循环和寿命测试，确认满足目标应用的可靠性要求。
六、封装与订购信息
型号：FHD4012S-2R2MT 品牌：cjiang（长江微电） 封装：SMD，4012（约 4×4mm） 订购时请确认批次与规格表，必要时向供应商索取完整数据手册（包括电感随频率/电流的曲线、温度系数和回流焊工艺参数）。
总结：FHD4012S-2R2MT 是一款体积紧凑、适合中等电流等级的功率电感，兼顾电流承载与低 DCR 特性，适用于各类中小功率开关电源与滤波场合。实际设计中应关注直流偏置导致的电感下降和由 DCR 带来的功耗与热管理。
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