WMSIC Electronic Components

RALEC LR2512-22R030F4 LR2512

ModelLR2512-22R030F4
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 LR2512-22R030F4
Type
RALEC
Minimum package
4000 圆盘

Technical parameters

Power
2W
Electronic Component
Electronic Component
Electronic Component
RALEC
Electronic Component
LR2512-22R030F4
Electronic Component
1
Package
2512
Electronic Component
Current Sense Resistor / Shunt
Electronic Component
±1%
Electronic Component
0.061g
Electronic Component
30mΩ
Electronic Component
1
Electronic Component
BM0264368414
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 LR2512-22R030F4 电流采样电阻产品概述

一、产品定位与核心价值

RALEC(旺诠)LR2512-22R030F4是一款专为电力电子领域打造的高精度贴片电流采样电阻(分流器),核心作用是通过低阻值分流实现电路中电流的精准检测,为控制系统提供可靠的电流反馈信号。作为旺诠成熟产品线中的一员,该产品平衡了精度、功率、封装尺寸与成本,适用于对电流检测精度要求较高的工业、汽车及消费电子场景,是替代传统插件分流器的理想选择。

二、关键参数与性能优势

该产品的核心参数围绕“精准、稳定、高效”设计,具体表现为:

1. 低阻高精度设计

阻值为30mΩ(型号中“22R030”编码对应30毫欧),精度等级为±1%——低阻值确保在大电流场景下(如10A电流时仅产生30mV电压降),不会对负载电路造成额外功耗或电压干扰;±1%精度则直接降低电流计算误差,使控制系统能更准确地监控电流状态(如过流保护阈值的精准触发),避免误判或漏判。

2. 稳定的功率承载能力

额定功率达2W,匹配2512封装的散热面积,可在持续负载下保持稳定工作,无需并联多颗电阻即可满足多数中功率场景需求(如200W开关电源的输出电流采样),简化电路布局的同时降低BOM成本。

3. 低温度系数

温度系数为**±25ppm/℃**,属于低漂移等级——在-55℃至125℃的宽工作温度范围内(工业级常见温区),阻值变化率仅0.25%(温度变化100℃时),有效避免因环境温度波动导致的采样误差,适合高温、低温交替的恶劣场景(如汽车发动机舱、户外光伏逆变器)。

三、封装与安装特性

该产品采用2512贴片封装(英制尺寸:250mil×120mil,约6.35mm×3.05mm),具备以下安装优势:

  • 自动化贴装兼容:适合SMT(表面贴装技术)生产线,可通过贴片机快速焊接,提高批量生产效率,降低人工成本;
  • 紧凑布局适配:2512封装尺寸适中,既保证2W功率的散热能力,又不会占用过多PCB空间,适合高密度电路设计(如BMS电池管理系统的多串采样);
  • 焊接可靠性:贴片封装的焊接点接触面积大,抗振动、抗冲击性能优于插件电阻,适合汽车、工业自动化等对可靠性要求高的场景,减少因振动导致的接触不良问题。

四、可靠性与环境适应性

旺诠作为专业电子元器件厂商,LR2512-22R030F4在可靠性上具备以下特点:

  • 材质稳定:采用低温度系数的锰铜合金电阻材料,阻值一致性好,长期工作无漂移,确保采样精度的长期稳定性;
  • 环境耐受性:通过工业级温湿度测试(-55℃~125℃、湿度95%RH),可适应潮湿、高温、低温等复杂环境,满足户外设备、工业现场的使用需求;
  • 抗电涌能力:符合IEC 61000-4-2等安规标准,能承受瞬间电涌冲击(如雷击、开关瞬态),避免因电路异常导致的电阻损坏,提升系统抗干扰能力。

五、典型应用场景

该产品的性能匹配多类电力电子场景,核心应用包括:

  1. 开关电源:输出电流采样、过流保护、电压环反馈控制(如100W~500W AC/DC电源、LED驱动电源);
  2. 电池管理系统(BMS):新能源汽车、储能电池的充放电电流检测,实现SOC(荷电状态)估算与过充过放保护;
  3. 电机驱动:直流无刷电机、伺服电机的电流闭环控制,提高电机扭矩精度与过载保护可靠性(如工业机器人、电动工具);
  4. 新能源设备:光伏逆变器、充电桩的输入/输出电流检测,监控发电效率与充电安全;
  5. 工业自动化:PLC(可编程逻辑控制器)、变频器的电流反馈,实现设备状态监控与故障诊断(如传送带、泵类设备)。

六、总结

RALEC LR2512-22R030F4电流采样电阻通过低阻高精度、稳定功率承载、宽温适应性与紧凑封装,成为电力电子领域电流检测的可靠选择。其性能优势覆盖工业、汽车、新能源等多场景,能有效提升控制系统的精准度与可靠性,降低电路设计复杂度,是工程师优化电流采样方案的实用器件。

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