WMSIC Electronic Components

TA-I Technology RLP25FEGMR025

ModelRLP25FEGMR025
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
RLP25FEGMR025
Type
TA-I Technology
Minimum package
4000 圆盘

Technical parameters

Power
3W
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RLP25FEGMR025
Electronic Component
1
Package
2512
Electronic Component
Current Sense Resistor / Shunt
Electronic Component
±1%
Electronic Component
0.085g
Electronic Component
25mΩ
Electronic Component
1
Electronic Component
BM0265676255
Operating Temperature
55℃~+170℃
Electronic Component
±50ppm/℃
Electronic Component
Electronic Component
Electronic Component
4000

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

RLP25FEGMR025功率电阻产品概述

一、产品核心身份与定位

RLP25FEGMR025是大毅科技推出的2512封装合金功率电阻,属于低阻值高精度功率型器件——针对中高功率场景下的电流检测、分压、过流保护等需求设计,区别于普通贴片电阻的“小功率+高阻值”定位,是工业自动化、电源管理、电机驱动等领域的核心配套元件。

二、关键电气性能参数解析

该产品的参数设计精准匹配实用场景,核心性能如下:

1. 阻值与精度

阻值为25mΩ±1%:

  • 毫欧级低阻是电流检测的关键——当电路电流为5A时,电阻两端压降仅125mV,既不影响负载供电效率,又能通过普通ADC实现精准采样;
  • ±1%的精度在功率电阻中属于“工业级偏高”,避免了不同批次或长期使用中的阻值偏差(比如温度变化10℃,阻值偏差仅±0.025mΩ),确保电流检测误差可控。

2. 功率额定值

额定功率3W:
2512封装(6.4mm×3.2mm)下实现3W功率,是同封装普通电阻的2~3倍——无需额外散热片即可稳定工作,能有效减少PCB布局空间,适合高密度电路设计。

3. 温度系数(TCR)

TCR为**±50ppm/℃**:
解释:每升高1℃,阻值变化百万分之50;若环境温度从-55℃升至+170℃(温差225℃),阻值总变化仅±0.01125mΩ——稳定性远超普通碳膜电阻(TCR通常±200ppm/℃以上),适配宽温环境。

4. 工作温度范围

覆盖**-55℃+170℃**:
完全满足工业级(-40℃+85℃)、部分车载(-40℃~+125℃)及户外设备的温度需求,比如低温地区的光伏逆变器、高温环境下的电机控制器。

三、物理封装与环境适应性

1. 封装类型

采用2512贴片封装(英制尺寸):

  • 支持自动化贴装(回流焊、波峰焊),焊接效率高;
  • 尺寸紧凑(6.4mm×3.2mm),适合PCB密集布局(比如BMS电池管理系统的多串检测)。

2. 材料与工艺

大毅采用合金箔蚀刻技术(区别于传统线绕电阻):

  • 合金箔(镍铬/锰铜合金)阻值一致性好,无电感效应(适合高频电路);
  • 封装采用耐高温环氧树脂,耐焊接热(260℃回流焊10秒稳定),符合RoHS无铅环保要求。

3. 可靠性验证

通过UL、CE认证,经高温老化(150℃×1000小时)、湿热测试(85℃/85%RH×500小时) 验证,MTBF(平均无故障时间)超10万小时,适合长期稳定运行的工业场景。

四、典型应用场景匹配

RLP25FEGMR025的性能精准匹配以下场景:

1. 电源管理电路

  • DC-DC转换器的输出电流检测(反馈环路中实现过流保护);
  • AC-DC电源的输入电流采样(避免过载损坏)。

2. 电机驱动系统

  • BLDC无刷电机的相电流检测(伺服控制中精准调节转速);
  • 工业机器人关节电机的电流反馈(提升运动精度)。

3. 电池管理系统(BMS)

  • 锂电池组的充放电电流检测(25mΩ阻值适配1~10A中等电流);
  • 电池均衡电路的分压采样(精准监测单串电压)。

4. 工业自动化设备

  • PLC输入输出模块的电流检测(过流保护);
  • 传感器信号调理电路的分压网络(低阻不影响信号完整性)。

五、品牌与工艺优势

大毅科技作为台湾老牌功率电阻厂商,在该产品上体现两大核心优势:

  1. 工艺沉淀:深耕合金电阻20余年,合金箔蚀刻技术成熟,阻值一致性达±0.5%(实际生产可控制);
  2. 客户适配:针对工业客户需求优化参数(比如宽温范围),在光伏、新能源汽车(低阶)、工业自动化领域有广泛应用案例。

综上,RLP25FEGMR025以“低阻+高精度+宽温”为核心,是中高功率场景下电流检测与功率控制的高性价比选择,适配多行业的实用需求。

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