WMSIC Electronic Components

SXN SMMS1770-6R8M Inductor SMMS1770

ModelSMMS1770-6R8M
PackageSMD,17.5x17.2mm
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 SMMS1770-6R8M
Type
SXN
Minimum package
300 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SXN
Electronic Component
SMMS1770-6R8M
Electronic Component
1
Package
SMD,17.5x17.2mm
Type
Inductor
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
11.61g
Inductor
6.8uH
Electronic Component
1
Electronic Component
BM0265793624
Current
19A
Resistor(DCR)
9.2mΩ
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.

SMMS1770-6R8M 功率电感产品概述

SMMS1770-6R8M是顺翔诺(SXN)品牌推出的一款表面贴装(SMD)功率电感,专为中大功率电源电路设计,具备大电流承载、低损耗、紧凑封装等核心特性,可广泛应用于各类高电流需求的电子设备中。

一、产品基本信息

  1. 品牌与型号:由顺翔诺(SXN)研发生产,型号为SMMS1770-6R8M,其中“1770”对应封装尺寸(17.5×17.15×7mm),“6R8”表示电感值6.8μH,“M”对应精度等级(±20%)。
  2. 封装类型:采用表面贴装(SMD)封装,无需插件,可通过自动化贴片机完成安装,适配现代化PCB生产流程。
  3. 产品定位:属于功率电感范畴,针对大电流、高效率的电源应用场景优化设计,兼顾性能与成本。

二、核心电气参数解析

SMMS1770-6R8M的电气参数直接决定了其适用场景,关键参数及意义如下:

  1. 电感值与精度:标称电感值6.8μH,精度±20%,在功率电感领域属于常规精度范围,可满足多数开关电源、DC-DC变换器等电路的滤波、储能需求,无需额外高精度匹配。
  2. 电流承载能力:
    • 额定电流(I_rated):19A(通常指25℃环境下,电感温升不超过40K时的连续工作电流),是电路设计中需重点关注的连续电流限制,超过该值会导致电感发热加剧,影响寿命。
    • 饱和电流(I_sat):32A(指电感值下降30%时的电流),是瞬态电流的上限参考——若电路中瞬态电流接近或超过32A,电感会进入饱和状态,电感值骤降,可能导致电源输出不稳定甚至损坏。
  3. 直流电阻(DCR):仅9.2mΩ,属于低阻值范围。DCR越小,电感在工作时的铜损(I²R)越小,电路效率越高,同时发热更低,可减少PCB散热设计压力,提升系统可靠性。

三、物理与封装特性

  1. 尺寸规格:封装尺寸为17.5mm(长)×17.15mm(宽)×7mm(高),属于常规功率电感尺寸,体积紧凑,可适配高密度PCB布局,尤其适合对空间要求严格的设备(如服务器、通信基站模块)。
  2. 结构设计:采用绕线式功率电感结构,搭配高性能磁芯材料(如铁硅铝或铁粉芯),兼顾电感稳定性与电流承载能力,同时降低磁损。
  3. 引脚与焊接:SMD封装配备适配自动化贴装的引脚,焊接兼容性良好,可通过回流焊工艺完成,无需特殊焊接设备。

四、典型应用场景

SMMS1770-6R8M的参数特性使其适用于以下高电流、高效率场景:

  1. 开关电源/DC-DC变换器:如服务器电源、工业控制电源、通信设备电源模块中的降压(BUCK)/升压(BOOST)电路,负责储能与滤波,满足大电流输出需求。
  2. 车载电子设备:车载电源(如电动车辆辅助电源、车载信息娱乐系统电源),需承受瞬态大电流,饱和电流32A可有效避免瞬态饱和。
  3. 大功率LED驱动:大功率LED照明(如工矿灯、路灯)的驱动电路,需稳定的大电流输出,低DCR可提升驱动效率。
  4. 储能电路:如UPS不间断电源、储能电池管理系统中的储能电感,需大电流承载与低损耗特性。

五、产品核心优势

  1. 大电流承载能力:额定19A、饱和32A的电流参数,覆盖中大功率电源的连续与瞬态电流需求,减少电路中多电感并联的设计复杂度。
  2. 低损耗高效率:9.2mΩ的DCR显著降低铜损,提升电源转换效率(可使效率提升0.5%~1%以上),同时减少发热,延长设备寿命。
  3. 紧凑封装易集成:17.5×17.15×7mm的SMD封装,适配高密度PCB布局,节省设备内部空间,适合小型化、轻量化设计趋势。
  4. 稳定可靠:±20%的电感精度与高性能磁芯材料,保证电感值在工作范围内的稳定性,避免因电感漂移导致的电路性能下降。

六、选型与使用注意事项

  1. 电流匹配:电路设计时需确保连续工作电流不超过19A,瞬态电流不超过32A,避免电感过热或饱和。
  2. 精度需求:若电路对电感精度要求较高(如精密医疗设备电源),需确认±20%是否满足,必要时选择更高精度型号。
  3. 散热设计:虽DCR较低,但大电流工作时仍会发热,需在PCB上预留散热空间,避免环境温度过高(如超过85℃)影响性能。
  4. 焊接工艺:采用回流焊工艺时,需遵循电感的焊接温度曲线(通常峰值温度不超过260℃,时间不超过10秒),避免损坏磁芯或引脚。

综上,SMMS1770-6R8M是一款性能均衡的功率电感,凭借大电流、低损耗、紧凑封装等优势,可广泛应用于各类中大功率电源场景,是电源设计工程师的可靠选型之一。

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