WMSIC Electronic Components

TA-I Technology RLM25FEER010

ModelRLM25FEER010
Package2512
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
RLM25FEER010
Type
TA-I Technology
Minimum package
4000 圆盘

Technical parameters

Power
2W
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RLM25FEER010
Electronic Component
1
Package
2512
Electronic Component
Current Sense Resistor / Shunt
Electronic Component
±1%
Electronic Component
0.084g
Electronic Component
10mΩ
Electronic Component
1
Electronic Component
BM0264549178
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.

RLM25FEER010 合金采样电阻产品概述

一、产品定位与核心价值

RLM25FEER010是大毅科技推出的一款高精度合金电流采样电阻,属于其RLM25FE系列主力型号。该产品针对大电流精准检测场景设计,以低阻值、高功率密度、稳定温漂为核心优势,可满足工业自动化、电源系统、电机驱动等领域对电流采样的严苛要求,是替代传统低精度电阻的理想选择。

二、关键参数与性能特性

该型号的核心参数及性能优势可归纳为以下四点:

  1. 低阻值与高精度:阻值10mΩ(±1%精度),采用合金箔工艺实现阻值一致性,避免普通电阻因阻值误差导致的采样偏差。例如,10A电流下可输出100mV电压信号,误差仅±1mV,满足多数电路的采样精度需求。
  2. 高功率与低功耗:额定功率2W,持续工作时可承受最大电流约14.14A(公式:(I=\sqrt{P/R}=\sqrt{2/0.01}\approx14.14A)),且低阻值带来的压降损耗极小,不影响主电路效率。
  3. 稳定温漂特性:温度系数(TCR)±50ppm/℃,意味着温度每变化1℃,阻值变化仅0.5μΩ,可在-55℃至155℃的宽温范围内保持性能稳定,适合户外、工业高温环境。
  4. 合金材质可靠性:采用镍铬合金箔作为电阻体,相比碳膜、金属膜电阻,抗老化性更强,长期使用阻值漂移率低于0.1%/1000小时,可提升电路使用寿命。

三、封装与可靠性设计

RLM25FEER010采用2512贴片封装(尺寸5.0mm×6.4mm),具备以下设计优势:

  • 自动化兼容:贴片封装适配SMT自动化贴装线,可大幅提升生产效率,降低人工成本。
  • 焊接可靠性:采用耐高温陶瓷基板与合金端电极,回流焊温度范围(220-260℃)内无损伤,焊接后抗机械振动(符合IEC 60068-2-6标准)与冲击能力强。
  • 散热优化:陶瓷基板导热性良好,配合2512封装的合理尺寸,可快速将工作热量传递至PCB,避免局部过热导致的性能衰减。

四、典型应用场景

该型号因性能匹配度高,广泛应用于以下领域:

  1. 开关电源与电源适配器:用于AC/DC、DC/DC转换器的输出电流采样,实现过流保护(OCP)与恒流控制,确保电源稳定输出。
  2. 电机驱动电路:BLDC无刷电机、伺服电机的绕组电流采样,配合MCU实现矢量控制,提升电机转速精度与效率。
  3. 电池管理系统(BMS):电动车、储能电池的充放电电流监测,精准控制电池充放电倍率,延长电池寿命并避免过充过放。
  4. 工业自动化设备:PLC、变频器、机器人关节驱动器的电流检测,保障设备在重载工况下的稳定运行。

五、选型与使用注意事项

为确保产品性能与寿命,需注意以下要点:

  1. 功率余量:实际工作功率建议不超过额定功率的80%(即1.6W),避免长期过载导致阻值漂移。
  2. 温漂匹配:若工作环境温度变化范围超过±20℃,需结合电路精度要求验证TCR是否满足(如医疗设备可能需更低温漂)。
  3. 焊接工艺:回流焊时需遵循大毅科技的焊接规范(预热温度150-180℃,峰值温度不超过260℃),避免损伤合金电阻体。
  4. 散热设计:PCB布局时需在电阻焊盘附近增加铜箔面积(建议≥10mm²),提升散热效率,降低工作温度。

综上,RLM25FEER010凭借稳定的性能与可靠的设计,成为中高端电流采样场景的优选电阻,可有效提升电路的精准度与稳定性。

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