WMSIC Electronic Components

TA-I Technology RLP25FEGR002

ModelRLP25FEGR002
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
RLP25FEGR002
Type
TA-I Technology
Minimum package
4000 圆盘

Technical parameters

Power
3W
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RLP25FEGR002
Electronic Component
1
Package
2512
Electronic Component
Current Sense Resistor / Shunt
Electronic Component
±1%
Electronic Component
0.072g
Electronic Component
2mΩ
Electronic Component
1
Electronic Component
BM0264549152
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.

RLP25FEGR002 电流采样电阻产品概述

一、产品基本身份识别

RLP25FEGR002是大毅科技推出的一款贴片式电流采样电阻(分流器),型号命名直接对应核心参数:

  • 前缀“RLP”为大毅功率电阻系列标识;
  • “25”代表2512封装(英制250mil×120mil,公制≈6.35mm×3.05mm);
  • “F”为功率等级定位;
  • “EGR002”中“002”明确阻值为2mΩ(2000μΩ)。

该产品定位于中功率电路的电流检测场景,兼顾精度与功率容量,适合自动化生产及高密度PCB集成。

二、核心性能参数及设计意义

作为电流采样电阻,其核心参数直接决定系统检测精度与可靠性,RLP25FEGR002的关键参数设计针对性强:

1. 低阻值高精度(2mΩ ±1%)

  • 低阻值:2mΩ属于低欧姆范围,电流采样电阻需尽可能低的阻值,避免自身功耗对电路效率的影响(功耗公式P=I²R),同时减少对信号回路的干扰;
  • ±1%精度:满足多数工业、汽车及电源系统的电流检测精度需求(如电源输出电流误差控制在1%以内),避免因采样误差导致过流保护误触发或控制精度下降。

2. 中功率容量(3W)

持续功率3W,结合2mΩ阻值,可支撑25℃环境下约38.7A的峰值电流(I=√(P/R)=√(3/2×10⁻³)≈38.7A),兼顾持续工作与短时过流场景(如电机启动瞬间、电源负载突变)。

3. 稳定温度系数(±50ppm/℃)

温度系数(TCR)是衡量阻值随温度变化的关键指标,±50ppm/℃意味着:

  • 当环境温度从-40℃(低温极限)升至125℃(高温极限)时,阻值漂移量仅为2mΩ×50×10⁻⁶×165℃≈0.0165mΩ,漂移率约0.825%;
  • 宽温下阻值稳定,避免因温度变化导致电流采样误差,适合汽车电子、工业控制等宽温应用场景。

三、封装与安装特性

RLP25FEGR002采用2512贴片封装,具备以下安装优势:

1. 尺寸紧凑

公制尺寸≈6.35mm×3.05mm,相比插件式分流器节省50%以上PCB空间,适合高密度电路设计(如电源模块、BMS主控板)。

2. 自动化兼容

贴片封装完全适配SMT(表面贴装技术)生产线,支持回流焊、波峰焊工艺,生产效率高,焊接可靠性强(焊点一致性优于手工插件)。

3. 散热设计

2512封装的焊盘面积较大,可有效将电阻工作时产生的热量传导至PCB,配合合理的铜箔设计(如增加焊盘铜箔厚度),能进一步提升功率承载能力。

四、典型应用场景

RLP25FEGR002的参数特性使其广泛应用于以下领域:

1. 开关电源系统

  • 应用:AC-DC电源、DC-DC转换器的输出电流采样,实现过流保护(OCP)、过功率保护(OPP);
  • 价值:低阻值减少电源损耗,±1%精度确保保护阈值准确,避免电源损坏。

2. 电池管理系统(BMS)

  • 应用:电动车、储能电池的充放电电流检测,辅助SOC(荷电状态)计算;
  • 价值:宽温稳定性适配车载环境(-40~85℃),3W功率支撑高倍率充放电(如快充时的大电流)。

3. 电机驱动电路

  • 应用:BLDC电机、伺服电机的相电流采样,实现矢量控制、过流保护;
  • 价值:低阻值避免电机效率损失,峰值电流能力满足电机启动/调速时的电流需求。

4. 汽车电子

  • 应用:车载充电器、车灯驱动、电动座椅控制的电流监测;
  • 价值:符合汽车级可靠性要求,温度系数稳定,避免因环境温度变化导致控制异常。

5. 工业控制设备

  • 应用:PLC、变频器、伺服驱动器的电流反馈回路;
  • 价值:精度与功率容量满足工业级控制需求,贴片封装适合设备小型化。

五、产品优势总结

  1. 精度与效率平衡:2mΩ低阻值兼顾采样精度与电路效率,±1%精度满足多数场景需求;
  2. 宽温可靠性:±50ppm/℃ TCR确保-40~125℃范围内阻值稳定,适配恶劣环境;
  3. 集成性强:2512贴片封装节省空间,适配自动化生产;
  4. 品牌保障:大毅科技的功率电阻产品经多年市场验证,符合RoHS、REACH等环保标准,质量可靠。

该产品通过精准的参数设计与可靠的封装工艺,成为中功率电流采样场景的高性价比选择,可有效提升系统的电流检测精度与稳定性。

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