WMSIC Electronic Components

TA-I Technology RLM12FTCMR007

ModelRLM12FTCMR007
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
RLM12FTCMR007
Type
TA-I Technology
Minimum package
5000 圆盘

Technical parameters

Power
1W
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RLM12FTCMR007
Electronic Component
1
Package
1206
Electronic Component
Current Sense Resistor / Shunt
Electronic Component
±1%
Electronic Component
0.03g
Electronic Component
7mΩ
Electronic Component
1
Electronic Component
BM0265427453
Electronic Component
SMD
Resistor Type
Current Sense Resistor
Electronic Component
Electronic Component
Electronic Component
5000

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

大毅科技RLM12FTCMR007合金采样电阻产品概述

一、产品核心定位与应用场景

大毅科技RLM12FTCMR007是一款1206封装的低阻值合金采样电阻,专为高精度电流检测设计,核心定位为中功率电路的电流采样元件。其低阻值、高功率密度与宽温稳定性,使其覆盖工业自动化、电源管理、电池系统等多领域应用,是替代传统金属膜电阻的高性价比选择。

二、关键参数与性能优势

1. 核心参数明确

  • 阻值:7mΩ(7毫欧),属于低阻值精密电阻范畴,避免采样电阻功耗过高影响电路效率;
  • 精度:±1%,高于普通电阻(±5%),可有效降低电流检测误差(如1A电流检测误差≤0.01A);
  • 功率:1W,连续工作电流上限约12A(计算:(I=\sqrt{P/R}=\sqrt{1/0.007}≈11.95A)),覆盖多数中功率场景;
  • 封装:1206(公制:3.2mm×1.6mm×0.5mm),贴片式表面贴装,兼容自动化生产,节省PCB空间。

2. 性能优势突出

  • 低温度系数(TCR):合金箔电阻TCR≤±50ppm/℃,阻值随温度变化极小(如125℃时阻值变化≤0.035mΩ),宽温范围内精度稳定;
  • 低寄生参数:1206封装体积小,寄生电感(<1nH)和电容(<0.1pF)低,适合高频电路(如开关电源)采样,减少信号失真;
  • 高稳定性:激光微调工艺保证阻值一致性(批次偏差≤0.2%),1000小时老化后阻值漂移≤0.5%,长期可靠性强;
  • 耐过载能力:合金材料可承受短时间2倍额定功率(2W),适应电路瞬态电流波动(如电机启动瞬间)。

三、封装与工艺特点

1. 标准化封装适配

1206封装符合IPC标准,焊盘尺寸与通用贴片电阻兼容,可直接集成于自动化生产线,支持回流焊(260℃峰值)、波峰焊工艺,焊接后接触电阻≤1mΩ,可靠性高。

2. 先进工艺保障品质

  • 合金箔基体:采用镍铬(NiCr)合金箔,电阻温度特性远优于金属膜电阻,抗老化能力强;
  • 激光微调阻值:通过激光刻蚀精确调整阻值,实现±1%高精度,避免传统电阻的阻值离散性;
  • 三层端电极:镍层(防氧化)+锡层(焊接兼容)+铜层(导通性),焊接牢固,耐机械冲击;
  • 环氧树脂涂层:表面涂覆耐高温环氧树脂,防潮、防腐蚀,同时降低机械损伤风险。

四、可靠性与环境适应性

1. 宽温工作范围

工作温度覆盖**-55℃至+125℃**,满足工业级(-40℃至+85℃)和部分汽车级(-40℃至+125℃)应用需求,适应极端环境(如北方户外储能站、高温车间)。

2. 环境适应性验证

  • 耐湿测试:85℃/85%RH环境下1000小时老化,阻值变化≤0.5%;
  • 抗振性能:符合MIL-STD-202标准,振动频率10-2000Hz、加速度2g,无开路或阻值漂移;
  • 耐冲击:1.5m跌落至水泥地后性能正常,适合便携式设备(如手持测试仪器)。

3. 长期可靠性

1000小时负载寿命测试(125℃+额定功率)后,阻值漂移≤0.3%,远优于工业级电阻标准(≤1%),降低设备维护成本。

五、典型应用示例

  1. 电池管理系统(BMS):电动汽车、储能电站、UPS电源的单体电池电流检测,7mΩ阻值适配1-12A充放电电流,±1%精度保证SOC(荷电状态)计算准确;
  2. 开关电源(DC-DC):服务器电源、通信电源的输出电流采样,低寄生参数保证高频开关下的信号完整性,1W功率满足500W以内电源需求;
  3. 电机驱动电路:伺服电机、BLDC电机的电流反馈,实现精准扭矩控制,适合工业机器人、3D打印设备;
  4. 工业自动化:PLC、变频器、伺服驱动器的电流检测模块,宽温性能适应工厂车间的温度波动;
  5. 消费电子:65W以上快充充电器、移动电源的快充电流控制,低阻值减少功耗(如12A电流下功耗≤1W),提升充电效率。

RLM12FTCMR007凭借高性价比与稳定性能,成为电流采样领域的主流选择,可满足多数中功率电路的高精度检测需求。

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