WMSIC Electronic Components

SXN SMNR8040-102MT Inductor SMNR8040

ModelSMNR8040-102MT
PackageSMD,8x8mm
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+

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Technical data

Product details

19 specifications

Core information

Product name
SXN SMNR8040-102MT
Type
SXN
Minimum package
1000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SXN
Electronic Component
SMNR8040-102MT
Electronic Component
1
Package
SMD,8x8mm
Type
Magnetic Display Inductor
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
1.28g
Inductor
1mH
Electronic Component
1
Electronic Component
BM0227644153
Current
400mA
Resistor(DCR)
3.64Ω
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.

SMNR8040-102MT 磁胶屏蔽功率电感产品概述

SMNR8040-102MT是顺翔诺(SXN)针对小型化、低EMI需求推出的贴片功率电感,采用磁胶屏蔽设计,兼具小体积与高可靠性,适用于各类便携及低功耗电子设备的电源管理与滤波场景。

一、产品核心定位与应用场景

该电感定位于中小功率密度电源系统的储能与EMI抑制,聚焦便携电子、IoT终端、小型通信模块等细分领域。其小体积(8×8mm贴片封装)、低功耗(低DCR)与磁胶屏蔽特性,可有效适配设备的紧凑布局与电磁兼容要求,是替代传统非屏蔽电感的优选方案。

二、关键参数解析

1. 电感值与精度

电感标称值为1mH(102标识),精度±20%,满足大多数电源滤波、DC-DC转换的储能需求。电感值在额定电流范围内保持稳定,无明显饱和衰减(饱和电流与额定电流一致),可确保电路工作性能一致性。

2. 电流特性

  • 额定电流(Irated):400mA:持续工作电流上限,超过此值会导致DCR发热增加、电感值缓慢下降;
  • 饱和电流(Isat):400mA:磁芯未饱和时的最大电流,本产品Isat与Irated一致,说明磁芯设计充分匹配电流需求,避免常规电感“额定电流低于饱和电流”的冗余设计,提升了电流利用率。

3. 直流电阻(DCR)

DCR标称值为3.64Ω,在400mA工作电流下,功耗约为0.58mW(P=I²R),属于低功耗水平,可有效降低电源系统的热损耗,延长设备续航。

4. 封装与尺寸

采用SMD 8×8mm贴片封装(行业标准8040封装,长8mm×宽8mm),引脚间距符合IPC-A-610规范,适配自动化SMT贴装,兼容各类小型化PCB布局。

三、磁胶屏蔽技术优势

磁胶屏蔽是SMNR8040-102MT的核心设计亮点,相比传统非屏蔽电感,具备三大优势:

  1. 低EMI干扰:磁胶封装可大幅减少磁芯漏磁,降低对周边电路的电磁干扰,适合医疗设备、通信终端等对EMI敏感的场景;
  2. 机械强度高:磁胶固化后增强磁芯抗冲击、抗振动能力,可承受10G(20-2000Hz)振动与100G(1ms)冲击,适配移动设备;
  3. 宽温稳定性:磁胶耐温范围覆盖-40℃~125℃,在极端温度下电感值变化率小于5%,满足户外、工业环境需求。

四、可靠性与工艺兼容性

1. 焊接可靠性

符合SMT回流焊规范,峰值温度260℃±5℃(时间≤10s),引脚采用镀锡工艺,焊接牢固,无虚焊风险;

2. 寿命与稳定性

在额定工作条件下,平均无故障时间(MTBF)超过10万小时,长期工作后电感值、DCR变化率均控制在5%以内;

3. 抗静电能力

引脚采用ESD防护设计,可承受8kV接触放电与15kV空气放电,避免生产、使用过程中的静电损坏。

五、典型应用场景

  1. 便携电子设备:智能手机、智能手表的DC-DC电源模块(储能滤波);
  2. IoT终端:传感器节点、智能门锁的低功耗电源滤波与EMI抑制;
  3. 小型通信模块:蓝牙5.0、WiFi 6模块的射频滤波;
  4. 消费电子:充电宝、无线充电器的升压/降压电路;
  5. 工业控制:小型PLC、传感器控制器的辅助电源。

六、选型与使用注意事项

  1. 电流匹配:避免工作电流超过400mA,若需更大电流需选择更高规格电感;
  2. 温度控制:工作环境温度不超过125℃,远离热源(如功率器件);
  3. 贴装工艺:严格按照SMT规范操作,避免回流焊温度过高导致磁胶老化;
  4. 电感值验证:使用LCR测试仪在1kHz频率下测试,确认电感值在0.8mH~1.2mH范围内;
  5. 静电防护:生产、测试过程中需接地,避免静电击穿。

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