WMSIC Electronic Components

TA-I Technology RLM20FECR010

ModelRLM20FECR010
Package2010
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
RLM20FECR010
Type
TA-I Technology
Minimum package
4000 圆盘

Technical parameters

Power
1W
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RLM20FECR010
Electronic Component
1
Package
2010
Electronic Component
Current Sense Resistor / Shunt
Electronic Component
±1%
Electronic Component
0.059g
Electronic Component
10mΩ
Electronic Component
1
Electronic Component
BM0264549204
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.

RLM20FECR010电流采样电阻产品概述

一、产品基础信息与核心定位

RLM20FECR010是大毅科技推出的一款表面贴装型电流采样电阻(分流器),核心功能是将电路中的电流信号转换为可检测的电压信号,广泛用于电源、电机驱动、电池管理等场景的电流监控与保护。其关键基础参数清晰明确:

  • 阻值:10mΩ(毫欧级低阻值,适配大电流采样);
  • 精度:±1%(满足常规工业/消费电子的采样需求);
  • 功率:1W(持续电流承载能力达10A,降额后可覆盖更多场景);
  • 温度系数(TCR):±50ppm/℃(温度变化对阻值影响小,稳定性强);
  • 封装:2010(英制贴片封装,尺寸约5.0mm×2.5mm,紧凑易集成)。

二、封装与安装特性

作为2010封装的贴片电阻,RLM20FECR010在安装与集成上具备明显优势:

  1. 空间高效:5.0×2.5mm的尺寸适合高密度PCB设计,尤其适合电源模块、小型电机控制器等对空间敏感的设备;
  2. 贴装兼容:表面贴装(SMT)无需插件孔,可通过自动化贴片机高速生产,降低人工成本与焊接难度;
  3. 焊盘适配:标准2010焊盘尺寸(宽度≥1.5mm、长度≥2.5mm)兼容常规PCB设计,避免焊接虚焊、短路等问题。

三、电气性能优势解析

RLM20FECR010的参数设计平衡了“采样精度”与“场景适配性”,核心优势体现在:

1. 低阻值精准采样

10mΩ是电流采样的经典小阻值——压降极小不干扰原电路:比如10A电流通过时,压降仅0.1V,不会额外消耗电路功率;同时电压信号清晰易检测:5A电流时压降0.05V,可被运放、MCU等轻松放大识别,避免信号丢失。

2. 精度与温漂的平衡

  • ±1%精度:满足90%以上常规场景(如电源过流保护、电池充放电监控),无需额外高精度成本;
  • ±50ppm/℃温漂:温度每变化100℃,阻值仅波动0.5%。在-40℃~+85℃的常规环境下,阻值变化可忽略,保证采样数据稳定(比如冬季户外设备、夏季高温车间的应用)。

3. 功率能力适配主流场景

1W功率支持持续10A电流(公式:(I_{max}=\sqrt{P/R}=\sqrt{1/0.01}=10A)),峰值电流可放宽至15A(降额使用更安全),覆盖:

  • 开关电源的输出电流(多数桌面电源输出电流≤10A);
  • BLDC电机的驱动电流(小型伺服电机峰值电流常≤15A);
  • 电动车BMS的单体电池充放电电流(多数三元锂电池单体充电电流≤10A)。

四、典型应用场景

RLM20FECR010凭借参数适配性,广泛用于以下领域:

  1. 电源系统:开关电源/线性电源的输出电流检测、过流保护;充电器的输出限流;
  2. 电机驱动:BLDC电机、伺服电机的电流闭环控制(提升响应速度)、过载保护;
  3. 电池管理(BMS):电动车/储能电池的充放电电流监测(计算SOC/SOH)、电池组电流平衡;
  4. 消费电子:笔记本电脑的电池电流监控、移动电源的输出限流;
  5. 工业控制:PLC的模拟量输入采样、变频器的输出电流监控。

五、选型与使用注意事项

  1. 电流范围确认:若实际最大电流超过10A,需降额使用(建议持续电流≤8A),或选择同阻值、更高功率(如2W)的电阻;
  2. 精度需求匹配:若需高精度场景(如医疗设备、实验室仪器),±1%精度可能不足,需选±0.1%或±0.5%的产品;
  3. 温度环境:大毅此款产品工作温度范围为-55℃~+125℃,若环境温度超过+100℃,需增加散热设计;
  4. PCB设计:焊盘需匹配2010标准尺寸,避免过小导致焊接不良;若需串联多个电阻(增大阻值),需注意功率叠加。

总结

RLM20FECR010是一款高性价比的电流采样电阻,大毅科技的成熟工艺保证了稳定性,10mΩ低阻值、±1%精度、1W功率与2010封装的组合,完美适配中低端电流检测场景。无论是批量生产的电源设备,还是小型电机控制器,它都是可靠的元件选择。

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