WMSIC Electronic Components

TA-I Technology RLP25FEER080

ModelRLP25FEER080
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
RLP25FEER080
Type
TA-I Technology
Minimum package
4000 圆盘

Technical parameters

Power
2W
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RLP25FEER080
Electronic Component
1
Package
2512
Electronic Component
Current Sense Resistor / Shunt
Electronic Component
±1%
Electronic Component
0.084g
Electronic Component
80mΩ
Electronic Component
1
Electronic Component
BM0264549201
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.

RLP25FEER080 2512封装高功率电流采样电阻产品概述

一、产品定位与核心价值

RLP25FEER080是大毅科技推出的2512封装贴片式电流采样电阻(分流器),专为中低功率电子设备的精准电流检测场景设计。其核心价值在于平衡了低阻值精度、中功率承载能力与温度稳定性,可满足工业控制、电源管理、电机驱动等领域的主流电流采样需求,同时适配自动化贴装产线,降低生产复杂度。

二、关键参数与性能解析

该电阻的核心参数直接支撑其应用场景,具体解析如下:

  1. 阻值与精度:固定阻值80mΩ(毫欧级),精度±1%——毫欧级低阻是电流采样的核心要求(可通过小电压降检测大电流,减少功率损耗);±1%精度覆盖了工业级电流检测的基础精度需求,无需额外高精度补偿即可满足多数场景。
  2. 功率承载能力:额定功率2W(25℃环境下)——支持最大连续电流约5A(由公式(I=\sqrt{P/R}=\sqrt{2/0.08}\approx5A)计算),可满足中小功率开关电源、电池充放电、小型电机驱动的电流检测需求。
  3. 温度系数(TC):±50ppm/℃——表示环境温度每变化1℃,阻值漂移为百万分之五十(如温度变化100℃,阻值变化仅0.5%),优于普通碳膜电阻(TC通常±200ppm/℃以上),在温度波动较大的工业环境中仍能保持稳定采样。
  4. 封装与安装:2512英制贴片封装(对应公制尺寸6.4mm×3.2mm),适配回流焊/波峰焊工艺,可直接集成于PCB板,支持自动化生产,降低人工成本。

三、封装可靠性与工艺设计

大毅科技针对该电阻的封装与工艺做了针对性优化,确保长期可靠性:

  1. 端电极结构:采用三层复合端电极(镍底层+镍中间层+纯锡表层),有效防止焊接时的氧化问题,提升焊接附着力,同时降低接触电阻,避免采样误差。
  2. 耐温性能:支持260℃回流焊30秒(符合IPC标准),焊接过程中阻值漂移≤0.1%;长期工作温度范围为-55℃~125℃,满足工业级环境的温度适应性。
  3. 负载寿命:在额定功率下持续工作1000小时,阻值变化≤0.5%;过载1.2倍功率工作500小时,阻值变化≤1%,可靠性符合工业设备的长周期运行要求。
  4. 环保合规:符合RoHS 2.0及REACH环保标准,无铅无镉,适配出口及绿色制造需求。

四、典型应用场景

RLP25FEER080的参数特性使其适配以下主流场景:

  1. 电源管理系统:
    • 开关电源的输出电流采样(如12V/5A电源的过流保护);
    • 快充充电器的电流检测(如PD3.0快充的充放电电流监控);
    • 不间断电源(UPS)的电池组电流采样。
  2. 电池管理系统(BMS):
    • 电动工具、小型储能电池的充放电电流检测;
    • 便携式设备(如笔记本电脑)的电池电流监控。
  3. 电机驱动与工业控制:
    • 小型直流电机/步进电机的过流保护采样;
    • PLC(可编程逻辑控制器)的模拟量电流输入模块;
    • 变频器的输出电流检测。
  4. 消费电子与通讯设备:
    • 路由器、机顶盒的电源电流监控;
    • 智能家居设备的电流检测(如智能插座的功率计量)。

五、选型与应用注意事项

为确保该电阻的性能发挥,需注意以下要点:

  1. 功率降额:当环境温度高于25℃时,需按降额曲线调整功率(如100℃时降额至50%,即最大工作功率1W),避免过热导致阻值漂移。
  2. PCB布局优化:
    • 采样电阻应尽量靠近负载端,减少线路阻抗对采样电压的干扰;
    • 采样电压的检测点需采用Kelvin连接(四端采样),避免接触电阻影响精度。
  3. 温度补偿:若应用场景温度变化范围大(如-40℃~85℃),可通过软件或硬件(如运放补偿电路)对温度系数进行补偿,进一步提升采样精度。
  4. 焊接规范:避免使用过高温度或过长焊接时间,防止端电极损坏;焊接后需进行阻值测试,确保无漂移。

六、总结

RLP25FEER080作为大毅科技的主流电流采样电阻,以80mΩ低阻、±1%精度、2W功率、±50ppm/℃稳定性为核心,结合2512贴片封装的易加工性,覆盖了工业控制、电源管理、消费电子等多领域的电流检测需求。其可靠性设计与环保合规性,使其成为中低功率设备电流采样的高性价比选择。

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