WMSIC Electronic Components

Sumida CDRH2D18/HPNP-2R2NC CDRH2D18

ModelCDRH2D18/HPNP-2R2NC
PackageSMD,3x3mm
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 CDRH2D18 / HPNP-2R2NC
Type
SUMIDA
Minimum package
1000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SUMIDA
Electronic Component
CDRH2D18/HPNP-2R2NC
Electronic Component
1
Package
SMD,3x3mm
Electronic Component
Power Inductor
Electronic Component
±30%
Electronic Component
0.1g
Inductor
2.2uH
Electronic Component
1
Electronic Component
BM0263436595
Current
1.9A
Resistor(DCR)
48mΩ
Electronic Component
Electronic Component
Electronic Component
1000
and Current(Isat)
1.6A

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

CDRH2D18/HPNP-2R2NC 产品概述

一、主要参数与型号概述

CDRH2D18/HPNP-2R2NC 为 Sumida(胜美达)系列电源用贴片功率电感。主要电气参数如下:标称电感值 2.2 μH(公差 ±30%,实际范围约 1.54–2.86 μH);额定电流(Ir)1.9 A;饱和电流(Isat)1.6 A;直流电阻(DCR)48 mΩ;封装尺寸标识为 1212。该器件面向开关稳压器、电源滤波与磁性元件密集的紧凑型电源平台。

二、性能特点

  • 大电流处理能力:Ir 1.9 A,可满足多数小功率至中功率降压转换器的连续载流需求。
  • 饱和特性明确:Isat 为 1.6 A,提示在接近此电流时电感量会明显下降,适合对纹波抑制优先或允许一定电感变化的设计。
  • 低 DCR 损耗:48 mΩ 的直流电阻在相同等级中属中等偏低水平,有利于降低 I^2R 损耗与温升(以额定电流 1.9 A 计算,理论 I^2R 损耗约 0.17 W)。
  • 宽公差设计:±30% 公差适于成本/尺寸受限且对精度要求不高的电源滤波场景。

三、典型应用场景

  • 同步降压(Buck)与非同步降压转换器的输出滤波电感。
  • 电源输入滤波与去耦,用于平衡纹波与峰值电流。
  • 行业应用:通信设备电源模块、工控小型电源、消费类电子的次级电源与电压轨滤波。

四、设计注意事项与工程建议

  • 电流选型:若系统对输出纹波和稳定性敏感,应保证工作直流电流与纹波电流之和尽量低于 Isat,以免电感量下降影响环路动态;若主要关注温升,则应以 Ir 为上限并考虑环境温度与散热条件。
  • 损耗与热管理:基于 DCR,建议在 PCB 布局上优化散热路径(加大铜箔面积、通过孔导热),并评估在最大工作电流下的温升。
  • PCB 布局:电感应靠近开关器件或输入/输出电容放置,以缩短高电流回路,减少 EMI。多层板时尽量使用多过孔并联以降低寄生阻抗。
  • 焊接与可靠性:遵循厂家回流焊建议曲线;避免在高热量工艺或多次回流中超过材料温度限值。
  • 公差考虑:±30% 公差较大,关键电路(如谐振/定频滤波)应选择公差更窄的元件或进行板上调试。

五、封装与采购信息

  • 型号:CDRH2D18/HPNP-2R2NC;品牌:Sumida(胜美达);封装:1212(贴片)。
  • 采购时注意批次与规格一致性,尤其是 DCR 与 Isat 标称在不同生产批次可能有细微差异。若对环境合规(如 RoHS)或可靠性测试有明确要求,请向供应商索取对应的合格证明和数据手册。

六、替代与扩展建议

若系统需更小纹波或更高保留电感量,可考虑:提高电感值或选择 Isat 更高的型号;若热量是限制因素,可选用更低 DCR 的功率电感。选型时综合考虑体积、价格、电流能力与电感公差。

总结:CDRH2D18/HPNP-2R2NC 是一款适用于常见开关电源滤波与中低功率电源轨的经济型功率电感,设计时应权衡 Isat 与 Ir 的限制并优化 PCB 布局与散热以确保稳定运行。若需更详细的机械尺寸、温升曲线或频率特性,请索取 Sumida 官方数据手册。

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