WMSIC Electronic Components

SXN SMNR5040-2R2MT Inductor SMNR5040

ModelSMNR5040-2R2MT
PackageSMD
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 SMNR5040-2R2MT
Type
SXN
Minimum package
1500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SXN
Electronic Component
SMNR5040-2R2MT
Electronic Component
1
Package
SMD
Type
Magnetic Display Inductor
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.553g
Inductor
2.2uH
Electronic Component
1
Electronic Component
BM0265793575
Current
3.7A
Resistor(DCR)
25mΩ
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.

SMNR5040-2R2MT 功率电感产品概述

一、产品核心定位与典型应用

SMNR5040-2R2MT是顺翔诺(SXN)推出的磁胶屏蔽SMD功率电感,针对中等功率电源电路的「小型化+低EMI+高可靠性」需求设计,属于5×5mm紧凑型封装系列。其核心定位是为需要平衡电流能力、尺寸与电磁兼容的场景提供稳定的储能/滤波方案,典型应用覆盖三大领域:

  1. 消费电子电源:手机快充模块、笔记本电源适配器、便携式设备(平板、移动电源)的DC-DC降压电路;
  2. 车载电子:中控系统电源、车载充电器、LED氛围灯驱动的低干扰电源模块;
  3. 工业与通信:小型工业控制器电源、路由器/交换机POE模块、IoT设备电源单元。

二、关键电气参数深度解析

这款电感的核心参数围绕「功率适配+低损耗+抗干扰」设计,关键指标及意义如下:

  • 电感值与精度:2.2μH ±20%,满足多数DC-DC转换器的储能需求(电感值需匹配开关频率与输出电流),±20%精度符合功率电感常规工业标准,无需过高成本;
  • 额定电流(Irms):3.7A(持续工作电流),指25℃环境下,电感长期工作温升不超40℃的最大电流,是电路设计需重点参考的持续负载上限;
  • 饱和电流(Isat):4.9A,指电感磁芯饱和(电感值下降约30%)时的瞬态电流,设计需确保电路最大瞬态电流不超此值,避免储能能力骤降导致输出波动;
  • 直流电阻(DCR):25mΩ,同尺寸电感中属低阻值水平,额定电流下铜损仅约0.34W,可有效提升电源转换效率、减少发热;
  • 屏蔽类型:磁胶屏蔽,通过磁胶包裹磁芯降低辐射干扰,EMI性能优于非屏蔽电感,适合EMC要求严格的场合。

三、物理特性与封装优势

SMNR5040-2R2MT采用SMD 5×5×4mm(长×宽×高)紧凑型封装,具备三大优势:

  1. 尺寸紧凑:5mm见方的平面尺寸适配高密度PCB设计,可缩小电源模块体积,满足消费电子「轻薄化」趋势;
  2. 焊接兼容性:SMD贴片封装支持回流焊、波峰焊(需适配工艺),与自动化生产流程兼容,提升贴片效率;
  3. 磁胶屏蔽结构:磁胶不仅降低电磁辐射,还增强磁芯机械稳定性,减少振动时的磁芯损耗与噪声,适合车载等振动环境。

四、性能优势与可靠性

除核心参数外,这款电感的综合性能与可靠性体现在:

  • 低损耗高转换效率:25mΩ DCR配合磁胶磁芯低铁损,典型DC-DC应用中转换效率可达90%以上,减少散热需求;
  • 强抗干扰能力:磁胶屏蔽使辐射干扰比非屏蔽电感降低10-15dB,减少对周边敏感电路(射频模块、传感器)的干扰,简化EMC设计;
  • 宽温工作范围:支持-40℃~+125℃工业级温度范围,适应极端环境(车载低温启动、工业高温场景);
  • 耐振动冲击:磁胶包裹与贴片结构稳定,可承受10G(10-2000Hz)振动测试与100G冲击测试,满足车载、工业设备可靠性要求。

五、选型与使用注意事项

为确保性能稳定,设计与生产中需注意:

  1. 选型匹配:
    • 持续负载电流≤3.7A,建议留20%余量(实际电流≤3A);
    • 电感值匹配电路开关频率(100kHz-1MHz DC-DC常用2.2μH);
  2. 焊接工艺:
    • 回流焊温度曲线符合IPC标准(峰值≤260℃,回流时间≤10s),避免热冲击损坏磁芯;
    • 焊盘尺寸推荐6×6mm,避免虚焊;
  3. 布局与安装:
    • 远离敏感电路(射频天线、模拟传感器),减少残留干扰;
    • 避免靠近PCB边缘,防止机械损伤;
  4. 温度监控:
    • 工作时监控电感温升,若超40℃(额定电流下温升),检查负载是否超标或散热不足。

总结

SMNR5040-2R2MT是一款兼顾「小尺寸、中功率、低EMI」的高性价比功率电感,适合多数消费电子、车载与工业电源的小型化设计,是替代同类进口产品的可靠选择。

Request for quote

Send RFQ

Use the form for single models, category sourcing, and multi-line BOM requirements.

Send your target model and quantity.

Product sourcing intelligence

Model, package, availability, and BOM fit reviewed before quotation.

WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.

Electronic component model and package intelligence review on an ESD-safe inspection bench

Model & package intelligence

Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.

BOM matching and alternative component comparison workstation with protected IC samples

BOM matching & alternatives

BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.

Electronic component sourcing availability dashboard with ESD-protected samples

Sourcing availability signal

Stock routes, quotation confidence, lead-time notes, and shipment feasibility are checked before sales follow-up.

Buyer sourcing scenarios

Examples of how common component sourcing requests are organized.

Typical RFQ scenarios based on the WMSIC form fields, catalog data, manual review steps, and shipment preparation workflow.

The buyer shares the full part number, package requirement, quantity, destination, and available product photos so the quotation can record the exact version under review.

Package confirmation Typical RFQ workflow

A multi-line BOM is organized into direct sourcing lines, lines that need package clarification, and lines where alternative-part review is permitted.

Mixed BOM triage Typical RFQ workflow

The original manufacturer part number, datasheet revision, application, critical limits, and acceptable changes are collected before possible candidates are discussed.

Obsolete-part review Typical RFQ workflow

Sample quantity, minimum packing, package format, target date, and courier destination are kept together in one RFQ conversation.

Small-batch request Typical RFQ workflow

Package photos, model markings, board context, and the quantity needed for repair help focus the sourcing review on the relevant version.

Repair batch evidence Typical RFQ workflow

When a suffix or package note is incomplete, the response records the open difference and requests buyer confirmation before procurement proceeds.

Model suffix clarification Typical RFQ workflow

Packing format, carton notes, invoice details, courier option, destination, and tracking handoff are coordinated around the confirmed order.

Export handoff Typical RFQ workflow

The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.

Replenishment inquiry Typical RFQ workflow

Related products

Packaged components ready for RFQ.