WMSIC Electronic Components

TA-I Technology RLP25FEGMR008

ModelRLP25FEGMR008
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
RLP25FEGMR008
Type
TA-I Technology
Minimum package
4000 圆盘

Technical parameters

Power
3W
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RLP25FEGMR008
Electronic Component
1
Package
2512
Electronic Component
Current Sense Resistor / Shunt
Electronic Component
±1%
Electronic Component
0.082g
Electronic Component
8mΩ
Electronic Component
1
Electronic Component
BM0265427445
Operating Temperature
55℃~+170℃
Electronic Component
±50ppm/℃
Electronic Component
Electronic Component
Electronic Component
4000

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

大毅科技RLP25FEGMR008合金电阻产品概述

一、产品基本定位与属性

RLP25FEGMR008是大毅科技推出的低阻值高精度合金功率电阻,属于该品牌2512封装系列的核心型号。该电阻采用合金箔制造技术,兼具低阻值、高精度、大功率密度及宽温稳定性等特点,主要面向需要精准电流检测、功率限流的工业及汽车电子场景,是替代传统金属膜电阻的高性价比选择。

二、核心性能参数详解

该型号的参数设计围绕“精准、稳定、耐环境”展开,关键指标如下:

  • 阻值与精度:标称阻值8mΩ(0.008Ω),精度等级±1%——相比普通电阻±5%的精度,可满足电池管理、电机驱动等场景的精准电流反馈需求;
  • 功率规格:额定功率3W(25℃环境下),在2512封装尺寸下实现了较高功率密度,适配中等功率负载场景;
  • 温度系数:±50ppm/℃——即温度每变化1℃,阻值变化±50×10⁻⁶,例如从25℃升至170℃,阻值变化仅约0.058mΩ,稳定性远优于普通碳膜电阻;
  • 工作温度范围:-55℃~+170℃——覆盖工业级宽温要求,可适应车载高温、工业现场低温等极端环境。

三、封装与结构特点

RLP25FEGMR008采用标准2512表面贴装封装(英制尺寸:250mil×120mil,约6.35mm×3.05mm),结构上具备三大优势:

  1. 合金箔基底:采用镍铬合金箔作为电阻体,相比金属膜电阻,耐浪涌能力提升30%以上,长期稳定性更优;
  2. 激光修调工艺:通过激光 trimming 实现±1%高精度,避免传统调阻的一致性偏差,批量产品阻值分布更集中;
  3. 高导热陶瓷基板:电阻体附着于氧化铝陶瓷基板上,热导率达20W/(m·K),可快速散发热量,保障3W功率下的长期可靠性。

四、典型应用场景

基于其低阻、宽温、高精度的特性,该型号主要应用于以下领域:

  1. 电池管理系统(BMS):新能源汽车、储能电池的单体电流采样、过流保护,精准判断电池充放电状态;
  2. 电源模块:DC-DC转换器、AC-DC电源的输出电流检测,实现恒流/恒压控制;
  3. 电机驱动:伺服电机、BLDC电机的电流闭环控制,提升调速精度与响应速度;
  4. 汽车电子:车载充电机(OBC)、车载信息娱乐系统的功率管理,适应车载-40℃~125℃的环境;
  5. 工业控制:PLC、变频器、伺服驱动器的电流监测,满足工业现场宽温与高EMI环境需求。

五、可靠性与环境适应性

该型号的可靠性设计通过多项测试验证:

  • 宽温稳定性:经-55℃~+170℃温度循环测试(1000次),阻值漂移≤0.1%;
  • 耐浪涌能力:可承受2倍额定功率的10ms脉冲浪涌,适配电机启动、电源切换等瞬态场景;
  • 抗湿热性:通过85℃/85%RH湿热测试(1000小时),阻值变化≤0.2%;
  • 机械强度:符合IPC-610标准的焊接强度要求,可适应SMT产线的振动环境。

六、应用注意事项

为保障性能与可靠性,应用时需注意:

  1. 功率降额:环境温度超过25℃时需按降额曲线使用(如100℃时降额至1.5W),避免过功率老化;
  2. Kelvin连接:电流检测场景建议采用四端Kelvin连接(电压端与电流端分离),消除焊盘电阻对检测精度的影响;
  3. 散热设计:PCB焊盘周围建议扩展铜箔面积(如2倍焊盘尺寸),提升散热效率;
  4. 焊接工艺:回流焊峰值温度≤260℃(时间≤10秒),避免高温损坏合金箔电阻体。

总结:RLP25FEGMR008是一款专为低阻高精度电流检测设计的合金功率电阻,兼具宽温、大功率、高稳定性等优势,是工业与汽车电子领域电流管理场景的可靠选择。

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