WMSIC Electronic Components

TA-I Technology RLM25FEER007

ModelRLM25FEER007
Package2512
BrandElectronic Component
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
RLM25FEER007
Type
TA-I Technology
Minimum package
4000 圆盘

Technical parameters

Power
2W
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RLM25FEER007
Electronic Component
1
Package
2512
Electronic Component
Current Sense Resistor / Shunt
Electronic Component
±1%
Electronic Component
0.084g
Electronic Component
7mΩ
Electronic Component
1
Electronic Component
BM0264549203
Electronic Component
SMD
Electronic Component
±50ppm/℃
Resistor Type
Current Sense Resistor
Electronic Component
Electronic Component

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

RLM25FEER007 电流采样电阻产品概述

一、产品核心定位与基础规格

RLM25FEER007是大毅科技(Taiyo Yuden) 推出的贴片式电流采样电阻(分流器),专为中功率电路的电流检测、过载保护及电源管理场景设计。该产品基于低阻合金工艺打造,核心基础规格明确:

  • 阻值:7mΩ(毫欧级低阻,适配大电流采样)
  • 功率等级:2W(持续工作功率)
  • 精度:±1%(直流电阻偏差)
  • 温度系数(TCR):±50ppm/℃(阻值随温度变化的稳定性)
  • 封装形式:2512(英制尺寸,对应公制6.4mm×3.2mm)
  • 安装方式:表面贴装(SMD),兼容自动化贴装工艺

二、关键性能参数详解

2.1 低阻设计与电流承载能力

7mΩ的毫欧级阻值是核心设计点——低阻可降低采样压降((V=I×R)),避免对被测电路造成额外损耗。结合2W功率等级,计算最大持续工作电流:
[ I_{\text{max}} = \sqrt{\frac{P}{R}} = \sqrt{\frac{2W}{0.007Ω}} \approx 16.9A ]
即最大可稳定承载约17A的持续电流,覆盖笔记本BMS充电、低压伺服电机、开关电源输出等典型场景的电流需求。

2.2 精度与温度稳定性

  • ±1%精度:满足工业级/消费电子级电流采样的基本精度要求,无需额外校准即可实现可靠检测(如电池充放电电流的准确计量);
  • ±50ppm/℃ TCR:温度每变化1℃,阻值变化仅0.005%;若环境温度波动100℃(如-40℃~60℃),阻值偏差不足0.5%,大幅降低温度对采样精度的影响,适合宽温工作场景。

2.3 功率与散热特性

2W功率采用2512封装,功率密度较高(单位面积功率≈9.7mW/mm²)。大毅科技通过优化合金膜层厚度及封装散热结构,确保产品在额定功率下长期工作时,表面温度控制在安全范围内(典型≤120℃),避免热失效。

三、封装与工艺特点

3.1 2512封装适配性

2512封装为行业通用贴片尺寸,引脚间距符合IPC-J-STD-001标准,兼容主流PCB设计(如Altium Designer、KiCad)的封装库,无需额外定制;同时支持回流焊、波峰焊等自动化贴装工艺,可显著提升批量生产效率。

3.2 合金工艺与可靠性

该产品采用锰铜合金箔作为电阻体,此类合金具有低TCR、高稳定性、抗老化等特点,相比普通金属膜电阻,更适合低阻采样场景;封装外壳采用耐高温环氧树脂,具备防潮、防腐蚀能力,可承受260℃回流焊温度(符合IPC标准)。

3.3 环保合规

RLM25FEER007符合RoHS 2.0(无铅、无镉、无汞)及REACH指令要求,适合出口至欧盟、北美等对环保要求严格的市场。

四、典型应用场景

  1. 笔记本电脑电池管理系统(BMS):检测充放电电流(典型5-10A),实现过充/过放保护;
  2. 低压伺服驱动器:监控伺服电机的工作电流(≤15A),避免过载;
  3. 开关电源/ UPS:检测输出电流,实现过流保护及效率监测;
  4. 电动车低压辅助系统:采样12V/24V辅助电源的工作电流(如车灯、控制器);
  5. 工业变频器:检测电机定子电流,实现矢量控制与过载保护。

五、市场优势与适配价值

  • 性能平衡:±1%精度+±50ppm/℃ TCR的组合,优于同功率同阻值的多数竞品(如部分产品仅±2%精度+±100ppm/℃);
  • 功率密度:2512封装实现2W功率,比同封装1W级产品更适合大电流场景;
  • 品牌可靠性:大毅科技作为全球被动元件供应商,产品一致性好,供货周期稳定(常规交期2-4周);
  • 成本效益:在中功率电流采样场景中,无需采用更高端的合金分流器(如0.1%精度),可有效控制BOM成本。

该产品通过核心性能与封装工艺的平衡,成为中功率电流检测场景的高性价比选择,适配消费电子、工业控制、新能源等多领域需求。

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