WMSIC Electronic Components

SXN SMMS1385-220MT Inductor SMMS1385

ModelSMMS1385-220MT
PackageSMD,13.8x12.8x8.80mm
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 SMMS1385-220MT
Type
SXN
Minimum package
300 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SXN
Electronic Component
SMMS1385-220MT
Electronic Component
1
Package
SMD,13.8x12.8x8.80mm
Type
Inductor
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
9.119g
Inductor
22uH
Electronic Component
1
Electronic Component
BM0265818038
Current
7A
Resistor(DCR)
22.8mΩ
Electronic Component
Electronic Component
Electronic Component
300

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

SMMS1385-220MT 功率电感产品概述

一、产品基本概况

SMMS1385-220MT是顺翔诺(SXN)品牌推出的贴片式功率电感,专为中功率电源电路设计。型号中“SMMS”为系列标识,“1385”对应封装尺寸参数,“220”明确电感标称值为22μH(“MT”为精度及封装后缀)。产品采用SMD贴片封装,尺寸为13.8mm(长)×12.8mm(宽)×8.80mm(高),适配自动化贴装工艺,可直接集成于高密度PCB布局场景。

二、核心电性能参数详解

该电感的关键参数直接决定其在电源电路中的适用性,具体如下

1. 电感值与精度

电感标称值为22μH,精度范围±20%,即实际电感值在17.6μH~26.4μH之间波动。这一精度可满足绝大多数电源电路需求(如DC-DC转换、滤波),无需过度追求高精度,同时降低生产与选型成本。

2. 电流承载能力

  • 额定电流(I_rms):7A:指环境温度25℃下,电感绕组温升不超过40℃的最大连续工作电流。实际应用需确保电路工作电流低于此值,避免过热衰减性能。
  • 饱和电流(I_sat):10A:磁芯开始饱和时的电流(电感值下降至初始值30%左右),是安全工作上限。若峰值电流超10A,会导致电感值骤降,影响电源输出稳定性(如纹波增大、效率下降)。

3. 直流电阻(DCR)

产品DCR为22.8mΩ,属于低阻设计。DCR是绕组直流损耗核心参数,低阻意味着大电流下铜损(I²×R)显著降低,可提升电源转换效率3%~5%,减少散热需求(无需额外散热片)。

三、机械封装与工艺特点

SMMS1385-220MT采用小型化贴片封装,具备以下工艺优势:

  • 尺寸紧凑(13.8×12.8×8.8mm),适配空间受限设备(如笔记本电源、车载电子);
  • 兼容常规贴片机自动化贴装,支持回流焊、波峰焊工艺,生产效率高;
  • 磁芯为铁氧体材料,绕组为漆包铜线,耐温(-40℃~+125℃)、耐电流能力强;
  • 引脚符合SMD标准,焊接可靠性高,长期使用不易虚焊。

四、产品优势与典型应用场景

1. 核心优势

  • 低阻高效:22.8mΩ低DCR,大电流下铜损小,提升电源转换效率;
  • 高电流承载:7A额定电流+10A饱和电流,满足中功率电源需求;
  • 宽温稳定:适配-40℃~+125℃环境,适应 harsh场景(如车载、工业);
  • 小型化适配:紧凑封装兼容高密度PCB布局。

2. 典型应用

  • DC-DC转换电路:笔记本、车载充电器、LED驱动的降压/升压模块;
  • 服务器电源:服务器、工作站的12V转5V/3.3V电源回路;
  • 通信设备:5G基站、路由器的电源滤波与储能;
  • 工业控制:PLC、伺服驱动器的电源模块。

五、选型与使用注意事项

  1. 电流匹配:连续工作电流≤7A,峰值电流≤10A,避免饱和或过热;
  2. PCB布局:靠近开关管、输出电容布局,减少电流环路面积,降低EMI;
  3. 焊接工艺:遵循回流焊曲线(峰值240℃~260℃,时间≤30s),避免磁芯过热;
  4. 精度考量:若需精密滤波,需实测电感值后选型。

SMMS1385-220MT凭借高电流承载、低阻高效与小型化设计,成为中功率电源电路的高性价比选择,广泛适配消费电子、通信、工业等领域。

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