WMSIC Electronic Components

Sumida CDRH3D28NP-100NC CDRH3D28NP

ModelCDRH3D28NP-100NC
Package1515
BrandSUMIDA
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
Sumida CDRH3D28NP-100NC
Type
SUMIDA
Minimum package
500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SUMIDA
Electronic Component
CDRH3D28NP-100NC
Electronic Component
1
Package
1515
Electronic Component
Power Inductor
Electronic Component
±30%
Electronic Component
0.231g
Inductor
10uH
Electronic Component
1
Electronic Component
BM0265592440
Current
1.18A
Resistor(DCR)
145mΩ
Electronic Component
Electronic Component
Electronic Component
500
and Current(Isat)
1.05A

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

Sumida CDRH3D28NP-100NC 功率电感产品概述

一、产品核心定位与典型应用场景

Sumida(胜美达)CDRH3D28NP-100NC是一款中小功率贴片功率电感,专为低至中功率的开关电源、驱动电路设计,核心定位是“高性价比、小体积、稳定可靠”,适配消费电子、小型家电、车载辅助电路等场景。

典型应用包括:

  1. 消费电子电源:笔记本电脑、平板电脑的CPU低功耗供电模块(如待机电路)、手机充电器次级滤波电感;
  2. LED驱动电路:LED台灯、小功率LED显示屏的恒流/恒压驱动滤波;
  3. 小型家电控制:智能插座、加湿器的电源管理单元(PMU)外围;
  4. 车载辅助电路:汽车中控屏的背光驱动、胎压监测模块的电源滤波。

这些场景对电感的电流需求多在1A左右,与该产品的额定电流、饱和电流参数高度匹配。

二、关键电气参数深度解析

该产品的核心参数围绕“功率承载能力、电感精度、功耗控制”三个维度设计,具体解析如下:

1. 电感值与精度

电感值为10μH ±30%——功率电感的精度要求远低于信号电感(如射频电感通常±5%),±30%的偏差在电源设计中可通过环路补偿(如调整反馈电阻、电容)快速适配,不影响电源稳定性。

2. 电流参数:额定电流与饱和电流

  • 额定电流(Irms):1.18A:指电感连续工作时,允许的最大交流/直流电流,此时电感自身的温升不超过胜美达标准的40℃(避免磁芯老化或性能下降);
  • 饱和电流(Isat):1.05A:指磁芯饱和时的电流(此时电感值下降至初始值的30%左右)。需注意:Isat略低于Irms,设计时需预留裕量——若负载电流接近1A,需确认电路不会出现瞬间过流导致磁芯饱和,否则会增加纹波噪声。

3. 直流电阻(DCR):145mΩ

DCR是电感绕组的直流电阻,直接影响功耗(功耗=I²×DCR)。以额定电流1.18A计算,功耗约为1.18²×0.145≈0.2W,属于低功耗范畴,无需额外散热设计,适配小体积PCB。

三、物理特性与封装适配

该产品采用贴片式封装,根据Sumida CDRH系列命名规则(3D28),实际尺寸约为3.2mm×2.8mm×2.0mm(长×宽×高),属于小尺寸封装,适配高密度PCB布局(如手机主板、智能穿戴设备)。

其他物理特性:

  • 无铅环保:符合RoHS 2.0标准,不含铅、镉等有害物质;
  • 耐热性:支持回流焊工艺(峰值温度260℃,符合IPC/JEDEC J-STD-020标准);
  • 焊接可靠性:端子采用镀锡工艺,焊接附着力强,抗振动性能佳(符合MIL-STD-202振动测试标准)。

四、胜美达品牌优势与可靠性保障

Sumida作为日本老牌电感制造商,在功率电感领域拥有超过50年的技术积累,该产品的可靠性源于三大优势:

  1. 磁芯材料优化:采用高性能铁氧体磁芯,磁导率稳定,抗干扰能力强(可降低电源纹波噪声);
  2. 批量一致性:生产过程采用全自动绕线、磁芯组装工艺,参数偏差控制在规格书范围内,批量良率≥99%;
  3. 可靠性测试:通过高低温循环(-40℃+85℃,1000次)、湿度测试(85℃/85%RH,500小时)、振动测试(102000Hz,加速度2g),符合工业级应用要求。

五、选型与应用注意事项

  1. 电流裕量设计:负载电流需低于Isat(1.05A),建议预留20%裕量(即最大负载≤0.84A),避免磁芯饱和;
  2. PCB布局建议:电感需靠近DC-DC转换器的开关管与输出电容,减少走线长度以降低寄生电感;
  3. 替换参考:若需替换,需确认三个核心参数匹配:电感值10μH、额定电流≥1.18A、封装尺寸一致(如Sumida CDRH3D28NP-100NC同系列其他型号需确认参数);
  4. 功耗评估:若负载电流接近额定电流,需确认PCB散热(如增加铜箔面积),避免电感温升过高。

该产品凭借小体积、低功耗、高可靠性的特点,成为中小功率电源设计的优选电感之一,适配多场景的紧凑化、轻量化需求。

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