WMSIC Electronic Components

RALEC LR2512-23R010F4 LR2512

ModelLR2512-23R010F4
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 LR2512-23R010F4
Type
2512
Minimum package
4000 圆盘

Technical parameters

Power
3W
Electronic Component
Electronic Component
Electronic Component
RALEC
Electronic Component
LR2512-23R010F4
Electronic Component
1
Package
2512
Electronic Component
Current Sense Resistor / Shunt
Electronic Component
±1%
Electronic Component
0.061g
Electronic Component
10mΩ
Electronic Component
1
Electronic Component
BM0264717681
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旺诠LR2512-23R010F4电流采样电阻产品概述

RALEC旺诠LR2512-23R010F4是一款针对中功率电流检测场景设计的高精度贴片电流采样分流器,依托旺诠在电阻制造领域的技术积累,兼顾低阻值、高精度、宽温稳定性与小型化封装,适用于电源管理、电机控制、电池管理等多类电子设备的电流监测与保护回路。

一、产品核心定位与应用方向

该电阻属于旺诠2512封装系列的电流采样专用型号,核心作用是将电路中的大电流转换为可检测的低电压信号(遵循欧姆定律U=IR),为过流保护、电流调节、功率监测等功能提供精准输入。其设计目标是平衡“低功耗(低阻值)”与“高精度”,适配对电流检测精度要求较高、功率密度适中的中功率电子系统。

二、关键参数及性能解析

1. 阻值与精度:精准采样的基础

  • 标称阻值:10mΩ(毫欧级低阻),低阻值可显著降低自身功耗(P=I²R),避免采样电阻成为电路发热源;
  • 精度等级:±1%(典型工业级精度),在25℃参考温度下,阻值偏差不超过0.1mΩ,可保证电流采样的相对误差控制在合理范围(例如10A电流下,电压降为100mV,误差仅±1mV)。

2. 功率容量:中功率场景适配

持续功率额定值为3W,结合阻值计算,其最大持续工作电流约为17.3A(I=√(P/R)=√(3/0.01)≈17.3A),可覆盖多数中功率设备的电流范围(如65W-200W开关电源、20A以内的电机驱动回路)。

3. 温度系数(TCR):宽温环境稳定

温度系数为**±25ppm/℃**,表示温度每变化1℃,阻值变化±25×10⁻⁶×10mΩ=±0.25μΩ。例如,当环境温度从25℃升至85℃(变化60℃),阻值仅漂移±15μΩ,相对变化率仅0.15%,远低于精度等级,确保宽温(-55℃~125℃,需结合旺诠官方 datasheet 确认)下的采样精度稳定。

三、封装与安装特性

采用2512贴片封装(英制尺寸:6.4mm×3.2mm),符合现代电子设备“小型化、高密度组装”的设计趋势,适配自动化贴装工艺(回流焊、波峰焊兼容),可有效提升批量生产效率。封装的机械强度满足工业级应用的振动、冲击要求,适合车载、工业自动化等严苛环境。

四、典型应用场景

  1. 开关电源(SMPS):AC-DC电源、DC-DC转换器的输出电流检测,作为过流保护(OCP)、过功率保护(OPP)的触发依据;
  2. 电机驱动与控制:BLDC电机、伺服电机的相电流采样,支撑矢量控制、转矩调节等高精度控制算法;
  3. 电池管理系统(BMS):电动车、储能电池的充放电电流监测,配合BMS实现电池状态(SOC/SOH)估算;
  4. 工业自动化设备:PLC、变频器、伺服驱动器的电流检测回路,适应工业现场的宽温、振动环境;
  5. 大功率消费电子:65W以上快充充电器、户外电源的电流检测,兼顾精度与小型化需求。

五、核心优势总结

  • 低阻高精度平衡:10mΩ低阻降低功耗,±1%精度满足精准检测,避免“采样电阻发热影响系统稳定性”与“精度不足导致误保护”;
  • 宽温性能可靠:±25ppm/℃ TCR 保证温度变化下阻值漂移极小,适配-40℃~85℃的常规工业/车载环境;
  • 中功率覆盖广:3W功率与17A最大电流,覆盖多数中功率设备的电流检测需求;
  • 小型化易集成:2512贴片封装适合高密度PCB设计,自动化贴装提升生产效率;
  • 品牌可靠性:RALEC旺诠作为专业电阻制造商,产品一致性好,通过RoHS、REACH等环保认证,符合国际市场要求。

该产品凭借上述特性,成为中功率电子系统电流采样场景的高性价比选择,可有效提升电路的电流检测精度与系统可靠性。

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