WMSIC Electronic Components

cjiang SPM2512-2R2MA SPM2512

ModelSPM2512-2R2MA
PackageSMD,2x2.5mm
Brandcjiang
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
cjiang SPM2512-2R2MA
Type
CJIANG
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJIANG
Electronic Component
SPM2512-2R2MA
Electronic Component
1
Package
SMD,2x2.5mm
Electronic Component
Power Inductor
Electronic Component
±20%
Electronic Component
0.065g
Inductor
2.2uH
Electronic Component
1
Electronic Component
BM0265294556
Current
3A
Resistor(DCR)
55mΩ
Electronic Component
Electronic Component
Electronic Component
3000
and Current(Isat)
3.8A

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

SPM2512-2R2MA功率电感产品概述

一、产品基本信息

SPM2512-2R2MA是长江微电(cjiang)推出的贴片式功率电感,专为中低功率电子设备的电源管理电路设计。该产品采用SMD封装,尺寸为2×2.5mm(长×宽),体积紧凑,适配高密度PCB布局,可满足便携式电子、消费类电子等小型化设备的核心需求。

二、核心电气参数详解

(一)电感值与精度

电感标称值为2.2μH,精度±20%,符合功率电感的常规精度要求——既保证批量生产的一致性,又降低成本,适配大多数DC-DC变换器、滤波电路的电感值需求(无需过高精度的场景)。

(二)电流特性参数

  1. 额定电流(I₍rated₎):3A(25℃环境下)
    指电感连续工作时,自身温升不超过允许范围(通常≤40℃)的最大电流,是实际应用中推荐的长期工作电流上限。

  2. 饱和电流(I₍sat₎):3.8A
    行业通用定义为“电感值下降30%时的临界电流”——此时电感储能能力和滤波效果明显衰减。3.8A的饱和电流比额定电流高26.7%,能有效应对电路中的瞬态电流波动(如负载突变、启动瞬间),提升电路稳定性。

(三)直流电阻(DCR)

直流电阻为55mΩ,是电感绕组铜损的主要来源。低DCR可显著减少功率损耗(公式:P=I²×R),例如在3A工作电流下,损耗仅为0.495W,有助于提升电源转换效率、降低设备发热。

三、封装与应用场景

(一)封装规格

采用SMD贴片封装,尺寸2×2.5mm,厚度符合行业小型化标准(约1.2mm),适配自动化贴装生产线,兼容常规回流焊工艺,焊接可靠性高,可直接集成到紧凑PCB中。

(二)典型应用场景

  1. 便携式电子设备:智能手机、平板电脑、智能手表的DC-DC降压模块(如5V转3.3V/3A电路),利用小尺寸特性满足设备轻薄化需求。
  2. 消费类电子:路由器、机顶盒、智能音箱的稳压电路,应对日常1-3A工作电流,饱和电流余量可覆盖启动瞬间的大电流冲击。
  3. 小型电源模块:工业级小功率DC-DC模块(如12V转5V/3A),低DCR提升转换效率,降低模块发热。

四、品牌与可靠性保障

长江微电(cjiang)是国内专注功率电感研发的厂商,产品覆盖消费电子、汽车电子(部分系列)等领域。SPM2512-2R2MA符合RoHS无铅环保标准,经过以下可靠性测试:

  • 高温存储:-40℃~125℃环境下连续存储1000小时;
  • 温湿度循环:85℃/85%RH条件下循环500次;
  • 焊接可靠性:回流焊后无开裂、短路等问题。
    可保证在不同环境下长期稳定工作。

五、选型优势总结

  1. 高密度小尺寸:2×2.5mm封装下实现2.2μH/3A性能,适配空间受限的PCB设计;
  2. 电流余量充足:饱和电流比额定电流高27%,抗瞬态能力强,降低故障风险;
  3. 低损耗高效率:55mΩ低DCR减少铜损,提升电源效率(尤其适合电池供电设备);
  4. 可靠稳定:长江微电工艺保障,环保合规,适合批量生产应用。

该产品是中低功率电源电路的高性价比选择,可满足大多数小型化电子设备的电感需求。

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