WMSIC Electronic Components

TA-I Technology RLP25FEER200

ModelRLP25FEER200
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
RLP25FEER200
Type
TA-I Technology
Minimum package
4000 圆盘

Technical parameters

Power
2W
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RLP25FEER200
Electronic Component
1
Package
2512
Electronic Component
Current Sense Resistor / Shunt
Electronic Component
±1%
Electronic Component
0.072g
Electronic Component
200mΩ
Electronic Component
1
Electronic Component
BM0264549151
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RLP25FEER200 2512封装电流采样电阻产品概述

一、产品核心定位与身份

大毅科技RLP25FEER200是一款精密贴片电流采样电阻(分流器),专为中小功率场景下的高精度电流检测设计,属于合金/厚膜类低阻值功率电阻范畴。其核心功能是通过电压降((V=I×R))实现电流的间接测量,广泛适配电源管理、电机控制、电池管理等对电流精度要求较高的电子系统,是替代传统绕线分流器的高集成度方案。

二、关键参数与规格深度解析

该电阻的核心参数完全匹配工业级电流采样需求,具体规格可支撑多场景应用:

  1. 阻值与精度:固定阻值200mΩ(毫欧级低阻),精度±1%——此精度等级远高于普通功率电阻(通常±5%),可有效降低电流采样误差,满足系统对电流检测的精准性要求;
  2. 功率承载能力:额定功率2W——在25℃环境下可持续稳定工作,实际使用中建议预留20%功率余量(即≤1.6W),避免长期过热影响性能;
  3. 温度稳定性:温度系数(TCR)±50ppm/℃——指温度每变化1℃,阻值变化±50×10⁻⁶,若环境温度变化100℃,阻值偏差仅±0.5%,大幅降低温度波动对采样精度的干扰;
  4. 封装与安装:2512贴片封装(尺寸6.4mm×3.2mm)——兼容主流SMT(表面贴装技术)产线,支持自动化批量生产,同时适应高密度PCB布局需求;
  5. 品牌与可靠性:大毅科技(台湾知名电阻制造商)出品——依托其成熟的厚膜/合金电阻工艺,产品一致性、长期稳定性均符合工业级标准。

三、性能优势与技术特点

相较于同类普通采样电阻,RLP25FEER200具备以下差异化优势:

  1. 高采样精度:低阻值(200mΩ)+ 高精度(±1%)+ 低TCR(±50ppm/℃)的组合,可实现mA级至3A左右电流的精准检测(最大电流计算:(I=\sqrt{P/R}=\sqrt{2/0.2}≈3.16A));
  2. 功率与封装的平衡:2W功率在2512封装中属于高功率密度设计,既满足中小功率系统的电流采样需求,又避免了大封装带来的PCB空间浪费;
  3. 环境适应性:适配-55℃至125℃的工业级温度范围(常规采样电阻标准),可稳定工作于户外、车载等温差较大的场景;
  4. 抗干扰设计:采用低寄生电感/电容的结构设计,减少高频信号下的采样误差,适合开关电源、高频电机驱动等应用。

四、典型应用场景

RLP25FEER200的参数特性使其覆盖多领域电流采样需求:

  1. 电源管理系统:开关电源、DC-DC转换器的输出电流监测、过流保护;LED驱动电源的电流恒定控制;
  2. 电池管理系统(BMS):电动车、储能电池的充放电电流检测,配合MCU实现过充/过放保护、SOC(荷电状态)估算;
  3. 电机驱动控制:伺服电机、BLDC(无刷直流电机)的电流闭环控制,提高电机转速与扭矩精度;
  4. 工业自动化设备:PLC(可编程逻辑控制器)、变频器的电流监测与过载保护;机器人关节驱动的电流反馈;
  5. 消费电子:笔记本电脑、充电器的电池充放电电流检测,提升电池寿命与安全性能。

五、选型与使用注意事项

为保证采样精度与产品寿命,需注意以下要点:

  1. 功率余量:实际工作功率需≤额定功率的80%(≤1.6W),避免长期过热导致阻值漂移;
  2. Kelvin连接设计:采样电路需采用开尔文连接(4线制),将电流端与电压采样端分离,消除引线电阻对采样电压的影响(低阻值电阻对引线电阻极敏感);
  3. 焊接工艺:回流焊温度需符合大毅科技的推荐参数(通常峰值温度230-250℃,时间≤10s),避免焊接损伤电阻;
  4. 环境防护:若应用于潮湿、腐蚀环境,需配合PCB三防漆处理,提升产品可靠性。

这款电阻凭借其精准的电流采样能力、稳定的功率承载及适配性强的贴片封装,成为中小功率电子系统中电流检测的高性价比选择,可有效降低系统设计复杂度并提升整体性能。

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