WMSIC Electronic Components

TA-I Technology RLP25FEER020

ModelRLP25FEER020
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
RLP25FEER020
Type
TA-I Technology
Minimum package
4000 圆盘

Technical parameters

Power
2W
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RLP25FEER020
Electronic Component
1
Package
2512
Electronic Component
Current Sense Resistor / Shunt
Electronic Component
±1%
Electronic Component
0.084g
Electronic Component
20mΩ
Electronic Component
1
Electronic Component
BM0264549180
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.

大毅科技RLP25FEER020电流采样电阻产品概述

大毅科技RLP25FEER020是一款专为中功率电流检测设计的高精度贴片分流器,属于电流采样电阻范畴。凭借低阻值、高精度、稳定的温度特性及紧凑的2512封装,该电阻广泛适配工业控制、电源管理、电池系统等场景的电流监测与控制需求,是电路中电流信号转换与反馈的核心元件。

一、产品定位与核心用途

RLP25FEER020的核心作用是将电路中的电流信号线性转换为电压信号(遵循欧姆定律V=I×R),为后续放大电路、控制单元或保护电路提供精准的电流反馈。具体应用方向集中在:

  • 电池管理系统(BMS):电动车、储能电站等场景中,精准检测充放电电流,实现过流、过充过放保护,保障电池寿命;
  • 开关电源与适配器:监测输出电流,优化稳压性能并触发过流保护机制,避免设备过载损坏;
  • 电机驱动系统:伺服电机、无刷直流电机(BLDC)的电流闭环控制,提升转速与扭矩精度,降低能耗;
  • 光伏/风电逆变器:检测逆变电流,保障功率输出效率,避免设备因电流波动损坏;
  • 工业自动化设备:PLC、变频器、机器人关节等模块的电流监测与安全控制,提升设备可靠性。

二、关键技术参数解析

该电阻的核心参数围绕低阻采样、高精度、稳定可靠设计,具体如下:

  1. 阻值与精度:标称阻值20mΩ(0.02Ω),精度±1%,满足大多数工业级与消费电子场景的电流采样误差要求(如BMS需±1%以内精度);
  2. 功率容量:额定功率2W,对应最大采样电流约10A(由公式I=√(P/R)=√(2/0.02)=10A计算得出),可覆盖中功率电流检测场景;
  3. 温度系数(TCR):±50ppm/℃,表示温度每变化1℃,阻值变化±0.005%;若工作温度变化100℃,阻值总变化仅±0.5%,稳定性优于普通采样电阻(通常±100ppm/℃以上);
  4. 封装与安装:采用2512贴片封装(尺寸5.0mm×3.2mm),适配表面贴装工艺(回流焊、波峰焊),支持自动化生产,且便于高密度PCB布局(如便携式电源、小型逆变器)。

三、封装与结构设计特点

RLP25FEER020的封装与结构设计兼顾性能与生产适配性:

  • 2512紧凑封装:尺寸仅5.0mm×3.2mm,可有效节省PCB空间,适合小型化设备(如车载充电器、无人机电源);
  • 低电感结构:采用合金箔工艺,降低寄生电感与电容(远低于传统绕线电阻),减少高频电流下的信号失真,适配开关电源的脉冲电流、电机驱动的快速变化电流;
  • 环保与焊接兼容性:符合RoHS无铅标准,焊接温度曲线适配常规SMT工艺(峰值温度230℃~245℃,时间≤10s),避免焊接损伤电阻性能。

四、性能优势与可靠性验证

相较于同类低阻采样电阻,RLP25FEER020具备以下优势:

  1. 宽温稳定性:工作温度范围覆盖-55℃~125℃,±50ppm/℃的TCR确保在极端温度下仍保持高精度,适合户外或工业 harsh 环境;
  2. 功率密度高:2W功率适配2512封装,功率密度约12.5W/cm²,满足中功率电流检测需求(如10A以内的电机驱动、电源输出);
  3. 工业级可靠性:大毅科技的生产工艺保障了电阻的耐振动(10g~2000Hz)、耐温冲击性能,可通过常规工业级可靠性测试,适合长期稳定运行。

五、选型与使用注意事项

为确保RLP25FEER020的性能稳定,使用时需注意以下要点:

  1. 电流匹配:实际最大采样电流需控制在10A以内(I_max≤√(2W/0.02Ω)=10A),避免功率过载导致电阻烧毁;
  2. 精度补偿:若需更高精度(如±0.5%以内),可结合温度系数计算误差,或在电路中增加NTC温度补偿电路;
  3. PCB布局:采样电阻应串联在电流路径的关键位置,避免长导线引入寄生电感;同时可适当增加焊盘面积或散热铜箔(如1oz铜箔),提升散热效率;
  4. 焊接规范:遵循回流焊温度曲线,避免局部过热(如焊盘温度超过250℃),防止电阻阻值漂移。

综上,大毅科技RLP25FEER020是一款性能均衡的中功率电流采样电阻,凭借高精度、稳定温度特性与紧凑封装,可广泛适配多种电流检测场景,是工业控制、电源管理等领域的可靠选择。

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