WMSIC Electronic Components

TA-I Technology RLP25FEGR050

ModelRLP25FEGR050
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
RLP25FEGR050
Type
TA-I Technology
Minimum package
4000 圆盘

Technical parameters

Power
3W
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RLP25FEGR050
Electronic Component
1
Package
2512
Electronic Component
Current Sense Resistor / Shunt
Electronic Component
±1%
Electronic Component
0.082g
Electronic Component
50mΩ
Electronic Component
1
Electronic Component
BM0264549173
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.

RLP25FEGR050 电流采样电阻产品概述

RLP25FEGR050是大毅科技推出的一款高精度功率型贴片电流采样电阻,属于分流器类核心元件,主要用于电路中精准检测电流信号,通过欧姆定律将电流转化为可测量的电压,是电源管理、电机驱动、电池系统等领域的关键配套器件。

一、产品定位与核心用途

该电阻的核心定位是中小功率大电流场景下的精准电流采样,区别于普通限流电阻,其低阻值设计可在不显著影响电路压降的前提下,实现对电流的有效检测。核心用途包括:

  • 为电源管理系统提供电流反馈信号,支撑过流保护、能效优化;
  • 电池管理系统(BMS)中监测充放电电流,防止电池过充过放;
  • 电机驱动电路中实现电流闭环控制,提升调速精度与负载稳定性;
  • 工业设备、车载电子等场景的电流监测与故障诊断。

二、关键参数与性能特性

RLP25FEGR050的参数设计针对电流采样的核心需求,关键性能如下:

  1. 低阻值精准度:固定阻值50mΩ,精度±1%——常温下阻值偏差极小,可直接通过“V=I×R”计算电流,无需复杂校准;
  2. 功率承载能力:持续功率3W,对应最大持续电流约7.75A(公式:I=√(P/R)=√(3/0.05)),峰值功率可满足短期过流需求;
  3. 温度稳定性:温度系数±50ppm/℃——温度每变化1℃,阻值仅变化百万分之五十,若环境温度从25℃升至100℃(变化75℃),阻值变化仅±0.375%,大幅降低温度对采样精度的影响;
  4. 贴片封装适配:采用2512(英制:0.25″×0.12″,约6.4mm×3.2mm)贴片封装,兼容常规SMT生产线,节省PCB空间,适合高密度布局。

三、封装与安装适配

2512封装是贴片电阻的主流功率型封装之一,RLP25FEGR050在安装时需注意:

  • 焊接方式:优先采用回流焊,兼容波峰焊(需控制焊接温度≤260℃、时间≤10s),无铅工艺符合RoHS环保要求;
  • PCB设计建议:为保证3W功率的散热,焊盘面积需适当加大(通常建议焊盘宽度≥1.2mm,长度≥3.0mm),避免局部过热导致阻值漂移;
  • 布局要求:应靠近电流通路的主回路,减少导线阻抗对采样电压的干扰,提升检测精度。

四、典型应用场景

该电阻因性能适配性强,广泛应用于以下场景:

  1. 开关电源(SMPS):输出端电流采样,配合控制芯片实现过流保护,防止负载短路损坏电源;
  2. 电池管理系统(BMS):新能源汽车、储能电池的充放电电流监测,精准控制电池SOC(荷电状态);
  3. 电机驱动:直流电机、无刷电机的电流反馈,实现矢量控制或PID调速,提升电机效率;
  4. 车载电子:车载充电器、电动助力转向(EPS)系统的电流采样,满足汽车级宽温(-40℃~125℃)可靠性要求;
  5. 工业变频器:电机负载电流监测,优化变频输出,降低能耗与设备故障率。

五、可靠性与品质保障

大毅科技作为专业电子元器件厂商,RLP25FEGR050经过严格可靠性测试:

  • 高低温循环测试(-55℃~125℃,循环500次)、湿度测试(85℃/85%RH,1000小时);
  • 振动与冲击测试(符合GB/T 2423标准),适配工业级、车载级应用;
  • 长期阻值漂移测试:常温下1000小时老化后,阻值变化≤±0.5%,保证长期使用稳定性。

综上,RLP25FEGR050凭借低阻值、高精度、高功率承载与宽温稳定性,成为电流采样场景下的高性价比选择,适配多领域的中小功率大电流检测需求。

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