WMSIC Electronic Components

RALEC LR2512-23R0075F4 LR2512

ModelLR2512-23R0075F4
Package2512
BrandRALEC
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
RALEC LR2512-23R0075F4
Type
RALEC
Minimum package
4000 圆盘

Technical parameters

Power
3W
Electronic Component
Electronic Component
Electronic Component
RALEC
Electronic Component
LR2512-23R0075F4
Electronic Component
1
Package
2512
Electronic Component
Current Sense Resistor / Shunt
Electronic Component
±1%
Electronic Component
0.102g
Electronic Component
7.5mΩ
Electronic Component
1
Electronic Component
BM0265114414
Electronic Component
SMD
Electronic Component
±25ppm/℃
Resistor Type
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.

RALEC LR2512-23R0075F4 贴片低阻值电阻产品概述

RALEC(旺诠)LR2512-23R0075F4是一款专为精密电流检测、中等功率负载设计的贴片低阻值电阻,采用2512标准贴片封装,核心参数覆盖低阻(7.5mΩ)、高精度(±1%)、高功率密度(3W)及稳定温度系数(±25ppm/℃),广泛适用于电源管理、电池系统、工业控制等对空间、精度有要求的场景。

一、产品定位与核心参数解析

该产品核心参数聚焦“低阻+高精度+高功率”,适配电流检测、功率分流等典型需求,具体参数及实际意义如下:

1. 阻值与精度

  • 阻值:7.5mΩ(毫欧级),属于低阻范畴,是电流检测的核心元件(通过V=I×R将大电流转换为可测量的小电压);
  • 精度:±1%,远高于普通低阻电阻(多为±5%),可将电流采样误差控制在极小范围——例如10A电流下,电压误差仅≤0.075mV,满足精密系统的误差要求。

2. 功率承载能力

  • 额定功率:3W(25℃环境下),比同封装(2512)普通电阻(多为2W)提升25%功率密度,可应对短时间大电流冲击(如电池充放电峰值、电机启动瞬间),避免过功率损坏。

3. 温度稳定性

  • 温度系数(TCR):±25ppm/℃,表示每变化1℃,阻值变化百万分之25;若工作温度范围为-40℃~125℃(工业级),最大阻值波动仅0.4125%,远低于精度要求,无需额外温度补偿电路。

二、封装与安装特性

该产品采用2512标准贴片封装,兼顾空间效率与安装兼容性:

1. 封装尺寸

公制尺寸为6.4mm(长)×3.2mm(宽)×0.55mm(厚),符合国际电子封装标准,可直接兼容Altium、Cadence等主流PCB设计软件的封装库,无需额外定制。

2. 安装方式

  • 支持表面贴装技术(SMT),兼容回流焊、波峰焊及手工焊接(手工焊接需控制烙铁温度≤350℃,焊接时间≤3秒);
  • 焊接可靠性符合IPC-A-610电子组装标准,焊点强度满足工业级应用要求,适合自动化生产线批量生产。

3. 封装材料

采用氧化铝(Al₂O₃)陶瓷基片,热导率约25W/m·K,可快速 dissipate 功率产生的热量,降低自身温度,延长使用寿命(相比普通树脂基片,导热效率提升3倍以上)。

三、核心性能优势

  1. 低阻高精度,减少功率损耗
    7.5mΩ低阻配合±1%精度,可在大电流下降低功率损耗(P=I²R)——例如10A电流下,损耗仅0.75W,远低于100mΩ电阻的10W损耗,提升系统能效。

  2. 高功率密度,适配紧凑设计
    2512封装实现3W功率,在有限体积内提供更高功率承载能力,适合空间紧张的PCB设计(如笔记本电源、无人机BMS模块)。

  3. 宽温稳定,简化系统设计
    ±25ppm/℃的TCR保证-40℃~125℃范围内阻值波动极小,无需额外温度补偿电路,降低系统复杂度与成本。

  4. 环保可靠,符合行业标准
    符合RoHS 2.0、REACH标准(无铅无镉),通过UL、CE认证;旺诠30年电阻制造经验确保产品长期稳定性,平均无故障时间(MTBF)可达10⁶小时以上。

四、典型应用场景

该产品针对电流检测、功率分流等需求,典型应用包括:

1. 电池管理系统(BMS)

  • 新能源汽车、储能电池、电动工具的BMS中,用于检测充放电电流;
  • 7.5mΩ低阻可在100A大电流下产生0.75V电压信号,便于ADC采样;3W功率可应对200A瞬间峰值电流(损耗3W),避免过流损坏。

2. 电源模块

  • 开关电源、DC-DC转换器的电流限制与过流保护电路;
  • 低阻采样可快速响应电流变化,3W功率满足中等功率电源(如100W以下)的负载要求。

3. 电机驱动系统

  • 伺服电机、BLDC电机的电流闭环控制;
  • 高精度采样提升电机控制精度,宽温特性适合工业环境(如机床、机器人)下的电机应用。

4. 工业控制

  • PLC、传感器信号调理电路的电流检测;
  • 稳定的温度系数保证不同环境温度下的检测精度,减少系统误差。

五、质量与认证保障

  • 品牌背书:RALEC(旺诠)是台湾知名电阻制造商,产品覆盖全球电子行业,通过ISO 9001、ISO 14001认证;
  • 可靠性测试:经过高低温循环(-55℃125℃,1000次)、湿热测试(85℃/85%RH,1000小时)、振动测试(102000Hz,2g加速度),满足工业级可靠性要求;
  • 定制化支持:可根据客户需求提供阻值微调、封装定制等服务(需提前沟通)。

综上,RALEC LR2512-23R0075F4凭借“低阻高精度+高功率密度+宽温稳定”的核心优势,成为电源管理、电池系统、工业控制等领域的高性价比选择,适合对空间、精度、可靠性有要求的电子设计。

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