WMSIC Electronic Components

TA-I RLM10FTSMR004

ModelRLM10FTSMR004
Package0805
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
RLM10FTSMR004
Type
TA-I Technology
Minimum package
5000 圆盘

Technical parameters

Power
500mW
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RLM10FTSMR004
Electronic Component
1
Package
0805
Electronic Component
Current Sense Resistor / Shunt
Electronic Component
±1%
Electronic Component
0.03g
Electronic Component
4mΩ
Electronic Component
1
Electronic Component
BM0264549212
Electronic Component
SMD
Electronic Component
±50ppm/℃
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.

RLM10FTSMR004 电流采样电阻产品概述

一、产品定位与核心价值

RLM10FTSMR004是大毅科技推出的一款贴片式电流采样电阻(分流器),专为中小功率电路的精准电流检测场景设计。其核心价值在于通过小阻值、高精度、低温度系数的组合,在紧凑的0805封装内实现稳定可靠的电流采样功能,满足电源管理、电池系统、电机驱动等领域对电流监测的严苛要求,同时兼顾成本与生产兼容性。

二、关键技术参数解析

该产品的核心参数围绕“精准采样、稳定可靠”展开,具体如下:

  1. 阻值与精度:标称阻值4mΩ,精度±1%。1%的精度在贴片采样电阻中属于较高水平,可直接降低电流计算误差(电流公式:(I=V/R)),适合对检测准确性要求较高的场景(如电池充放电控制)。
  2. 功率与功率密度:额定功率500mW,封装尺寸为0805(1.0mm×1.6mm)。功率密度约312.5mW/mm²,在小封装下实现了较高的功率承载能力,可应对电路中瞬间电流波动带来的功率冲击(如电机启动瞬间)。
  3. 温度系数:±50ppm/℃。温度系数反映阻值随温度变化的稳定性,50ppm/℃意味着温度每变化100℃,阻值变化仅0.5%,远优于普通电阻的温系表现,确保宽温度范围(-40℃~+125℃)内的采样精度一致性。
  4. 类型与功能:属于电流采样电阻(分流器),通过串联在被测电路中,将电流信号转换为电压信号((V=I×R)),便于后续运放、ADC等电路进行电流检测与闭环控制。

三、封装设计与安装特性

  1. 封装规格:采用行业通用的0805贴片封装,尺寸小巧(1.0mm×1.6mm×0.5mm左右),可有效节省PCB布局空间,适合高密度电路设计(如手机快充模块)。
  2. 安装兼容性:支持表面贴装工艺(回流焊、波峰焊),与自动化生产流程适配性强,降低生产制造成本。安装时需注意:为保证散热效率,PCB焊盘应预留适当铜箔面积(参考大毅官方指南),避免功率集中导致温度过高影响性能。
  3. 机械可靠性:封装结构坚固,可承受常见机械应力(振动、冲击),适合工业环境(如PLC)或移动设备(电动车、手持终端)的使用场景。

四、典型应用场景

RLM10FTSMR004的参数特性使其在多个领域具有广泛应用:

  1. 电池管理系统(BMS):电动车、储能电池的充放电电流采样,±50ppm/℃温系可适应电池工作温度范围(-20℃~+60℃),避免因温度变化导致的电流检测偏差,保障电池安全。
  2. 电源管理模块:DC-DC转换器、开关电源的输出电流监测,4mΩ小阻值可减少功耗损耗,500mW功率满足中等功率电源(如100W以内)的采样需求。
  3. 电机驱动电路:无刷电机、伺服电机的电流闭环控制,精准阻值与功率密度可实现快速电流调节,提升电机运行稳定性(如工业机器人关节电机)。
  4. 消费电子:智能手机、平板电脑的快充电路电流检测,小封装适配设备内部紧凑空间,稳定性能保障快充安全(如18W~65W快充)。
  5. 工业控制:PLC、变频器的电流监测回路,宽温度范围与机械可靠性适合工业现场的复杂环境(如车间高温、振动场景)。

五、品牌与品质保障

大毅科技作为专业被动元器件制造商,在电阻领域拥有成熟的研发与生产体系:

  1. 品质管控:产品经过严格可靠性测试(高温老化、温度循环、湿度测试),符合RoHS、REACH等环保标准,确保长期使用的稳定性与安全性。
  2. 技术支持:提供完整datasheet与应用指南,针对不同场景给出参数选型建议,帮助客户优化电路设计(如BMS采样电路的布局优化)。

综上,RLM10FTSMR004凭借精准的采样性能、稳定的温度特性与紧凑的封装设计,成为中小功率电路电流检测的理想选择,可有效提升电路的可靠性与控制精度。

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