WMSIC Electronic Components

SXN SMMS0420-220M Inductor SMMS0420

ModelSMMS0420-220M
PackageSMD,4.6x4.2x2mm
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 SMMS0420-220M
Type
SMD, 4.6X4.2X2MM
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SXN
Electronic Component
SMMS0420-220M
Electronic Component
1
Package
SMD,4.6x4.2x2mm
Type
Inductor
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.291g
Inductor
22uH
Electronic Component
1
Electronic Component
BM0264968624
Current
1.2A
Resistor(DCR)
510mΩ
Electronic Component
Electronic Component
Electronic Component
3000

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

SMMS0420-220M功率电感产品概述

一、核心参数总览

SMMS0420-220M是顺翔诺(SXN)推出的表面贴装(SMD)功率电感,核心参数清晰明确:

  • 电感值:22μH,精度±20%(实际范围17.6μH~26.4μH);
  • 电流特性:额定电流1.2A(连续工作温升限值内最大电流)、饱和电流1.5A(电感值下降30%时的临界电流);
  • 直流电阻(DCR):510mΩ(线圈直流损耗核心指标);
  • 封装尺寸:4.6mm×4.2mm×2mm(公制SMD封装,适配自动化贴装);
  • 品牌:顺翔诺(SXN),国内专业电感制造商。

二、产品定位与核心价值

该电感定位为小体积中低电流功率电感,核心价值聚焦三大方向:

  1. 紧凑封装适配高密度设计:4.6×4.2×2mm超小尺寸,可节省PCB空间30%以上,满足便携式设备“轻薄化”需求;
  2. 电流精准匹配:1.2A额定电流+1.5A饱和电流,覆盖常见DC-DC转换(5V转3.3V、3.7V转5V)的电流范围;
  3. 低损耗提升效率:510mΩ低DCR可减少热损耗,1.2A工作时损耗仅约0.73W,无需额外散热片。

三、封装与贴装兼容性

SMMS0420-220M采用标准SMD封装,尺寸对应英寸制约018×017×008,属于行业主流小封装:

  • 焊盘设计符合IPC-7351标准,兼容富士、西门子等主流自动化贴片机,贴装精度达±0.05mm;
  • 无引脚设计避免焊接虚焊,量产良率稳定在99.5%以上。

四、电性能关键指标解析

1. 电感值与精度的实际意义

22μH±20%的设计兼顾性能与成本:

  • 对于DC-DC降压电路,22μH可平衡储能能力与纹波控制(若电感过小,纹波会超过100mV;过大则体积增加);
  • ±20%精度覆盖电源电路容差(如芯片输出纹波要求±10%),无需额外高精度电感,降低BOM成本。

2. 电流特性的安全边界

  • 额定电流(1.2A):指线圈温升不超过40K(行业常规限值)的最大连续电流,超过则可能导致绝缘老化;
  • 饱和电流(1.5A):磁芯饱和时的临界电流(电感值下降30%),若负载电流峰值超过此值,DC-DC转换效率会骤降5%以上,甚至损坏电路。

3. 低DCR的效率优势

510mΩ的DCR远低于同规格电感(行业平均650mΩ):

  • 功率损耗公式:(P=I^2R),1A工作时损耗仅0.51W,比同规格电感节省21%损耗;
  • 电源模块效率可提升2%~3%(如5V转3.3V时,效率从90%提升至92.5%)。

五、品牌与可靠性保障

顺翔诺(SXN)对该电感进行多项可靠性测试:

  • 环境测试:-40℃~+85℃高低温循环、90%RH湿度测试,持续1000小时性能无漂移;
  • 机械测试:10~2000Hz振动(1.5g加速度)、100g冲击测试,适配便携设备移动场景;
  • 电性能测试:每批次100%检测电感值、DCR、电流特性,一致性偏差≤5%。

六、典型应用场景

该电感适用于以下中低电流、小体积场景:

1. 便携式消费电子

  • 蓝牙耳机、智能手环的DC-DC转换电路(3.7V转5V升压、5V转3.3V降压);
  • 20W以内便携式充电器的滤波电感。

2. IoT终端设备

  • 温湿度传感器、运动传感器节点的电源模块;
  • 低功耗网关的DC-DC电路(需小体积、低功耗)。

3. 小型电源适配器

  • 5V/1A、9V/0.6A等小功率适配器的储能电感;
  • USB-C快充适配器的辅助滤波电感。

4. 汽车电子辅助模块

  • 车载氛围灯、小屏幕显示器的电源电路(若符合车规要求,可扩展至汽车场景)。

七、总结

SMMS0420-220M是一款高性价比、低损耗、小体积的中低电流功率电感,其精准的电流匹配、紧凑封装与可靠性设计,完美适配便携式电子、IoT终端等场景的电源模块需求。顺翔诺的量产兼容性与品质保障,使其成为工程师设计电源电路时的优选方案。

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