WMSIC Electronic Components

SXN SMDRI74-221MT Inductor SMDRI74

ModelSMDRI74-221MT
PackageSMD,7.5x7.5mm
BrandSXN
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
SXN SMDRI74-221MT
Type
SXN
Minimum package
1000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SXN
Electronic Component
SMDRI74-221MT
Electronic Component
1
Package
SMD,7.5x7.5mm
Type
Magnetic Display Inductor
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.903g
Inductor
220uH
Electronic Component
1
Electronic Component
BM0265793581
Current
360mA
Resistor(DCR)
1.17Ω
Electronic Component
Electronic Component
Electronic Component
1000

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

SMDRI74-221MT 功率电感产品概述

SMDRI74-221MT是顺翔诺(SXN)推出的磁胶屏蔽型表面贴装(SMD)功率电感,针对中低功率DC-DC转换场景优化设计,兼顾电感性能、电流承载能力与小型化体积,可广泛适配便携式电子、小型消费电子等设备的电源模块。

一、核心电气参数详解

该电感的关键参数经过针对性调校,满足常规电源电路的性能需求:

  • 电感量与精度:标称220μH(标识“221”,即22×10¹μH),精度±20%,符合工业级常规电感的误差要求,适配多数DC-DC转换电路的电感量匹配;
  • 饱和电流(Isat):700mA(直流),指磁芯未饱和的最大直流电流——若超过此值,电感量会急剧下降,导致输出电压波动。该参数覆盖多数便携式设备的电源输出电流范围;
  • 直流电阻(DCR):1.17Ω,反映线圈直流损耗。低DCR可减少电源转换热损耗,提升效率,同时降低设备长期发热风险;
  • 屏蔽类型:磁胶屏蔽结构,通过磁胶包裹磁芯抑制电磁干扰(EMI),相比非屏蔽电感降低约30%辐射干扰,适配EMC要求较高的设备。

二、物理特性与封装规格

SMDRI74-221MT采用小型化SMD封装,适配紧凑布局:

  • 封装尺寸:7.5×7.5×4.5mm(长×宽×高),属于行业“7045”系列,可节省PCB空间,适配智能手机、智能手表等高密度布局;
  • 结构设计:磁胶屏蔽+绕线式结构,线圈采用高导电率铜线,磁芯为铁氧体材料,兼顾电感量与电流承载;
  • 贴装兼容性:适配自动化贴片生产线,支持常规回流焊工艺,适合大规模量产。

三、典型应用场景

结合参数与封装特性,该电感主要适用于:

  1. 便携式电子:智能手机、智能手表、蓝牙耳机的DC-DC降压模块(如5V转3.3V/1.8V),满足低功耗、小体积需求;
  2. 小型消费电子:智能音箱、智能家居控制器、小型路由器的电源转换单元,低EMI适配家庭电磁环境;
  3. 低功率工业设备:小型传感器节点、微型PLC模块的辅助电源,700mA电流覆盖多数低功耗工业场景;
  4. 车载低功耗模块:车载USB充电口、胎压监测传感器的电源电路(高温下建议降额使用)。

四、品牌与可靠性保障

顺翔诺(SXN)作为电感领域专业厂商,该产品具备:

  • 工艺成熟度:磁胶屏蔽工艺经批量验证,产品一致性好,参数波动小;
  • 寿命保障:线圈与磁芯结合稳定,常规环境下可满足5年以上使用寿命;
  • 应用验证:已适配TI TPS54302、矽力杰SY8088等主流DC-DC芯片,在多家消费电子厂商量产产品中应用。

五、选型优势总结

相比同类同尺寸电感,SMDRI74-221MT优势明显:

  • EMI控制:磁胶屏蔽无需额外屏蔽件,降低设计成本与PCB占用;
  • 性能平衡:7.5×7.5mm尺寸下实现220μH电感量与700mA饱和电流,兼顾性能与体积;
  • 效率优化:1.17Ω低DCR减少热损耗,提升电源转换效率约2%-3%。

注意事项

高温环境(≥85℃)下需对饱和电流降额(每升高10℃降额10%),确保电路稳定性。

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