WMSIC Electronic Components

TA-I Technology RLM12FTCMR025

ModelRLM12FTCMR025
Package1206
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
RLM12FTCMR025
Type
TA-I Technology
Minimum package
5000 圆盘

Technical parameters

Power
1W
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RLM12FTCMR025
Electronic Component
1
Package
1206
Electronic Component
Current Sense Resistor / Shunt
Electronic Component
±1%
Electronic Component
0.03g
Electronic Component
25mΩ
Electronic Component
1
Electronic Component
BM0264549217
Electronic Component
SMD
Electronic Component
±75ppm/℃
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.

RLM12FTCMR025电流采样电阻产品概述

一、产品定位与核心属性

RLM12FTCMR025是大毅科技推出的一款高性能贴片式电流采样电阻(分流器),专为电路中低阻值、高精度电流检测场景设计,核心作用是将负载电流转换为可测量的电压信号((U=I×R)),为电源管理、电机控制、电池管理等系统提供准确的电流反馈。该产品整合了低阻值、稳定温漂、高功率密度等特性,适配现代电子设备小型化与高可靠性需求,是工业级与消费电子领域电流采样的高性价比选择。

二、关键技术参数详解

RLM12FTCMR025的核心参数围绕电流采样的“准确、稳定、高效”三大需求优化,具体如下:

2.1 阻值与精度

  • 阻值:25mΩ(毫欧级低阻值)—— 低阻值设计可大幅降低采样电阻自身功耗((P=I²R)),避免对电路整体效率造成影响;同时适配大电流场景下的电压信号输出(如6A电流对应0.15V电压,易被普通ADC检测)。
  • 精度:±1% —— 满足工业级与消费电子的主流精度需求,可有效减少电流采样误差,避免因阻值偏差导致的控制误判(如BMS过流保护误触发、电机调速精度下降)。

2.2 功率与散热

  • 额定功率:1W(持续工作功率)—— 对应最大持续电流约6.3A((I=\sqrt{P/R}=\sqrt{1/0.025})),可支撑多数中功率电子设备的电流检测需求;若为脉冲功率,实际耐受电流可进一步提升(需参考厂商降额曲线)。
  • 散热特性:结合1206封装的散热面积,可有效将工作热量传递至PCB,避免局部过热导致阻值漂移或性能下降。

2.3 温度系数(TCR)

  • TCR:±75ppm/℃ —— 温度变化对阻值的影响极低:以100℃温度变化为例,阻值漂移仅为(25mΩ×75×10^{-6}×100=0.1875mΩ),相对误差约0.75%,保证产品在-40℃~+125℃宽温范围内的采样准确性。

三、封装与安装特性

RLM12FTCMR025采用1206贴片封装(英制尺寸:3.2mm×1.6mm,公制3216),具备以下安装优势:

  1. 小型化适配:紧凑尺寸节省PCB空间,符合智能手机、便携电源、小型工业模块等设备的小型化设计趋势;
  2. 自动化贴装:贴片式结构兼容SMT(表面贴装技术)生产线,可实现高速批量生产,降低制造成本;
  3. 可靠性保障:封装采用耐高温、抗机械应力的合金载体,适配回流焊、波峰焊等工艺,避免虚焊、脱落等问题。

四、典型应用场景

RLM12FTCMR025的参数特性使其广泛应用于以下领域:

  1. 电池管理系统(BMS):用于电动车、储能电池的充放电电流检测,低阻值减少电池能量损耗,稳定温漂保证不同温度下的充放电控制精度;
  2. 电源管理模块:DC-DC转换器、开关电源的输出电流反馈,实现过流保护、负载均衡等功能;
  3. 电机驱动电路:伺服电机、BLDC(无刷直流电机)的电流闭环控制,提升电机调速精度与稳定性;
  4. 工业控制设备:PLC(可编程逻辑控制器)、变频器的电流监测,满足工业环境宽温、高可靠性需求;
  5. 消费电子:快充充电器、移动电源的过流保护采样,确保设备安全与充电效率。

五、品牌与品质保障

大毅科技作为国内被动元器件领域的专业厂商,RLM12FTCMR025具备以下品质优势:

  • 环保合规:符合RoHS 2.0、REACH等国际环保标准,无铅无卤,适配全球市场需求;
  • 可靠性测试:通过高温老化(125℃×1000h)、温度循环(-40℃~+125℃×500次)、湿度测试(85℃/85%RH×1000h)等严苛测试,保证产品在恶劣环境下的长期稳定性;
  • 一致性管控:采用先进的激光调阻工艺,批量产品阻值一致性好,降低系统调试难度。

综上,RLM12FTCMR025凭借低阻值、高精度、稳定温漂与小型化封装,成为电流采样场景的可靠选择,可满足多领域电子设备的电流检测需求。

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