WMSIC Electronic Components

TA-I Technology RLP25FEER025

ModelRLP25FEER025
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
RLP25FEER025
Type
TA-I Technology
Minimum package
4000 圆盘

Technical parameters

Power
2W
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RLP25FEER025
Electronic Component
1
Package
2512
Electronic Component
Current Sense Resistor / Shunt
Electronic Component
±1%
Electronic Component
0.084g
Electronic Component
25mΩ
Electronic Component
1
Electronic Component
BM0264549186
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.

大毅科技RLP25FEER025电流采样电阻产品概述

一、产品定位与核心价值

RLP25FEER025是大毅科技针对中小功率电流检测场景推出的高精度贴片分流器,属于采样电阻中的“精准型”器件。其核心价值在于平衡了“低阻值高精度”与“小封装高功率密度”,可替代传统插件分流器,适配自动化贴装产线,是电源、电机控制、电池管理等领域的高性价比优选元件。

二、关键性能参数详解

RLP25FEER025的参数设计围绕“电流采样精准度”与“长期可靠性”展开,核心指标如下:

  • 阻值与精度:25mΩ(毫欧级),精度±1%——远高于普通电阻(通常±5%),可将电流采样误差控制在0.25mΩ以内,避免因电阻偏差导致系统误判(如过流保护失效)。
  • 功率能力:额定功率2W——结合欧姆定律计算,持续工作最大电流约8.9A((I=\sqrt{P/R}=\sqrt{2/0.025}\approx8.94A)),满足中小功率电源、电机的电流检测需求;短时间过载能力可覆盖瞬时峰值电流(参考大毅官方 datasheet)。
  • 温度系数(TC):±50ppm/℃——温度每变化1℃,阻值变化±50×10⁻⁶,即25℃→100℃(温差75℃)时,阻值仅变化约0.00375%(0.025mΩ),宽温环境下仍能保持采样精度。
  • 封装尺寸:2512(公制6.4mm×3.2mm)——贴片封装节省PCB空间,兼容回流焊、波峰焊等自动化焊接工艺,适配高密度电路板设计。

三、封装与工艺优势

大毅科技针对采样电阻的“低阻值一致性”与“可靠性”需求,采用以下定制化工艺:

  1. 高精度合金电阻膜:采用镍铬合金薄膜,通过精密光刻工艺控制阻值,批量一致性优于±0.5%(实际生产管控),避免厚膜电阻的阻值分散性问题。
  2. 强化端电极结构:端电极采用“镍层+锡层”双层结构,焊接时形成可靠的金属间结合,抗热应力能力强,可避免焊接后阻值漂移。
  3. 散热优化设计:2512封装的陶瓷基板采用高导热率材料,配合电阻膜薄型化设计,有效降低工作热阻,保证2W功率下长期稳定工作。

四、可靠性与环境适应性

RLP25FEER025符合工业级可靠性要求,核心表现为:

  • 宽工作温度范围:-55℃~125℃,可覆盖户外设备、工业现场的极端温度场景。
  • 功率稳定性:额定功率下连续工作1000小时,阻值漂移≤±0.1%,满足长期监测需求。
  • 抗冲击与振动:符合IPC-J-STD-001标准,可承受10G/20-2000Hz的振动测试,适配车载、航空航天等振动环境(需结合具体应用认证)。

五、典型应用场景

RLP25FEER025的参数特性使其适配多领域电流采样需求:

  1. 开关电源系统:AC-DC/DC-DC电源的输出电流采样,实现过流保护(OCP)、过功率保护(OPP);快充充电器的多档电流检测,精准控制充电功率。
  2. 电机驱动电路:BLDC无刷电机、伺服电机的相电流采样,配合MCU实现矢量控制(FOC),提升电机效率与控制精度。
  3. 电池管理系统(BMS):锂电池组、储能电池的充放电电流监测,防止过充过放,延长电池寿命;新能源汽车辅助电源的电流检测。
  4. 工业自动化设备:PLC、伺服驱动器、变频器的电流反馈回路,实现负载电流监测与故障诊断。
  5. 消费电子:笔记本电脑、服务器的电源模块电流检测,智能家电的功率监测功能。

六、选型与使用注意事项

为保证性能稳定,需注意以下要点:

  1. 功率降额: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或损坏。
  2. 焊接工艺:回流焊峰值温度≤260℃,焊接时间≤10秒;波峰焊温度≤250℃,时间≤3秒,防止电阻膜热损伤。
  3. PCB Layout优化:
    • 采样电阻两端走线尽量短、粗,减少寄生电感/电容干扰;
    • 靠近电流路径(如MOS管、电感),避免长距离走线引入噪声;
    • 电阻下方铺铜(连接地/电源平面),增强散热。
  4. 精度匹配:若需更高精度(如±0.5%),可选大毅同系列更高精度型号;若电流>10A,需考虑2725或更大封装分流器。

RLP25FEER025凭借“高精度、高功率密度、小封装”的核心优势,成为中小功率电流采样场景的高性价比选择,大毅科技的成熟工艺与可靠性保障,使其可广泛应用于工业、消费电子、新能源等领域,满足多样化的电流监测需求。

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