WMSIC Electronic Components

SXN SM5845-221MT Inductor SM5845

ModelSM5845-221MT
PackageSMD,5.8x5.2mm
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 SM5845-221MT
Type
SXN
Minimum package
1500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SXN
Electronic Component
SM5845-221MT
Electronic Component
1
Package
SMD,5.8x5.2mm
Type
Display Inductor
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.616g
Inductor
220uH
Electronic Component
1
Electronic Component
BM0265793570
Current
350mA
Resistor(DCR)
1.57Ω
Electronic Component
Electronic Component
Electronic Component
1500

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

SM5845-221MT 非屏蔽功率电感产品概述

SM5845-221MT是顺翔诺(SXN)推出的一款小型贴片式(SMD)非屏蔽功率电感,针对低功耗、紧凑布局的电子电路场景设计,兼顾性能与成本,适用于消费电子、IoT设备等量产型应用。

一、产品基本定位与核心参数

作为顺翔诺功率电感系列的入门级产品,SM5845-221MT的核心参数明确覆盖低功耗电路需求:

  • 电感值:220μH(型号中“221”即代表22×10¹μH),精度±20%,满足常规功率电路的电感量公差要求;
  • 额定连续电流:350mA,指电感在直流电流下长期工作时,电感值衰减不超过10%的最大电流,适合电池供电设备的低功率需求;
  • 直流电阻(DCR):1.57Ω,反映电感线圈的直流损耗,在额定电流下功耗约0.19W,属于低功耗范畴;
  • 封装尺寸:5.8mm×5.2mm SMD贴片封装,体积紧凑,支持自动化贴装,节省PCB空间;
  • 类型:非屏蔽电感,无金属屏蔽壳,成本更低、体积更小,适合对电磁干扰(EMI)要求不严格的场景。

二、设计优势与适用场景

1. 小体积高密度集成

5.8×5.2mm的贴片封装可轻松嵌入智能手环、蓝牙耳机、智能手表等便携式设备的PCB布局中,尤其适合空间受限的模块(如电源管理单元、传感器节点)。

2. 成本与性能平衡

非屏蔽设计降低了制造成本,同时保留了功率电感的基本功能;DCR控制在1.57Ω,既避免了过高的直流损耗,又无需采用复杂的低电阻线圈工艺,适合量产型电子设备的成本控制需求。

3. 典型应用场景

  • 小型DC-DC转换器:如5V转3.3V、3.7V转1.8V的低功率电源模块,用于IoT传感器、便携式音频设备;
  • LED驱动电路:小功率LED串(如手机闪光灯辅助灯、智能台灯局部照明)的限流与滤波;
  • IoT设备电源管理:智能门锁、温湿度传感器等电池供电设备的电源稳压电路;
  • 消费电子辅助电路:如充电器的EMI滤波(非屏蔽但配合其他元件可满足基本要求)、耳机的电源模块。

三、品质与可靠性

顺翔诺作为专业电感制造商,SM5845-221MT符合以下品质要求:

  • 环保标准:采用无铅工艺,符合RoHS、REACH等国际环保指令,适配出口市场;
  • 焊接可靠性:贴片封装兼容回流焊、波峰焊工艺,耐温260℃(回流焊峰值温度),焊接后焊点牢固,长期工作无脱落风险;
  • 参数一致性:批量生产中电感值、DCR的一致性控制在±20%精度范围内,避免单批产品性能波动;
  • 工作温度范围:常规工作温度为-40℃~+85℃,可满足大多数室内外电子设备的环境需求。

四、使用注意事项

  1. EMI控制:非屏蔽电感会产生轻微电磁辐射,若应用于射频电路(如蓝牙模块、WiFi模块),需配合屏蔽罩或EMI滤波电容使用;
  2. 电流限制:严格遵循350mA额定电流,避免过载导致电感饱和(电感值骤降)或线圈过热,影响电路稳定性;
  3. 焊接规范:回流焊温度曲线需符合电感的耐温要求(峰值温度≤260℃,时间≤10秒),避免高温损坏线圈;
  4. 储存条件:未焊接的电感需储存在干燥、通风环境(湿度≤60%),避免引脚氧化影响焊接质量。

五、总结

SM5845-221MT是一款针对低功耗紧凑电路设计的高性价比非屏蔽贴片功率电感,凭借小体积、低损耗、平衡的成本与性能,成为消费电子、IoT设备量产的理想选择。其参数覆盖常规低功率需求,可靠性满足工业级基本要求,适合对EMI无严格要求的各类电子电路应用。

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