WMSIC Electronic Components

TA-I Technology RLP25FEER040

ModelRLP25FEER040
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
RLP25FEER040
Type
TA-I Technology
Minimum package
4000 圆盘

Technical parameters

Power
2W
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RLP25FEER040
Electronic Component
1
Package
2512
Electronic Component
Current Sense Resistor / Shunt
Electronic Component
±1%
Electronic Component
0.072g
Electronic Component
40mΩ
Electronic Component
1
Electronic Component
BM0264549183
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RLP25FEER040电流采样电阻产品概述

大毅科技RLP25FEER040是一款专为中功率场景设计的高精度贴片电流采样电阻(分流器),凭借低阻值、高功率密度、宽温稳定性等核心优势,广泛应用于电源系统、电机驱动、电池管理等领域。以下从多维度详细介绍该产品:

一、产品核心定位与应用场景

RLP25FEER040属于大毅科技合金贴片分流器系列,核心定位为中功率高精度电流检测元件,主要解决中小电流(≤7A)场景下的电流采样精度与稳定性需求。典型应用场景包括:

  • 电源领域:DC-DC转换器、AC-DC适配器的输出电流采样,用于过流保护、负载调节与能效监测;
  • 电机驱动:BLDC无刷电机、伺服电机控制器的相电流闭环采样,支撑矢量控制算法的精准执行;
  • 电池管理:电动车BMS的单体电池均衡电流检测、储能系统的充放电电流监测;
  • 工业控制:PLC、变频器、伺服驱动器的电流回路检测,确保设备稳定运行;
  • 消费电子:大功率快充充电器(65W+)的输入/输出电流控制,适配PD、QC等快充协议。

二、关键电气参数详解

RLP25FEER040的电气参数针对采样电阻的核心需求优化,关键指标如下:

  1. 阻值与精度:标称阻值40mΩ,精度±1%(B级精度),阻值一致性好,无需额外校准即可满足多数应用;
  2. 功率特性:额定功率2W(连续工作),短期过载能力可达2倍功率(10秒内),适配突发负载变化场景;
  3. 温度系数(TCR):±50ppm/℃(-55℃~125℃),温度变化对阻值影响极小——例如100℃温差下,阻值变化仅0.2mΩ(40mΩ×50ppm×100),宽温环境下性能稳定;
  4. 电流与电压:最大工作电流≈7.07A(由P=I²R推导),额定电压≈0.283V(由V=IR推导),避免高压下的功率损耗与安全隐患。

三、封装与物理特性

RLP25FEER040采用2512贴片封装(英制尺寸,对应公制6.4mm×3.2mm),具备以下物理优势:

  • 紧凑尺寸:适合高密度PCB布局,节省设备内部空间;
  • 自动化兼容:贴片式设计支持回流焊、波峰焊等自动化生产工艺,提升生产效率;
  • 材质可靠:采用高精度镍铬合金箔/丝作为电阻体,搭配陶瓷基片与环氧树脂封装,确保低阻值稳定性与抗腐蚀性;
  • 环保合规:符合RoHS 2.0、REACH等环保标准,无铅焊接兼容,适配全球市场需求。

四、可靠性与环境适应性

该产品针对工业与汽车电子(若适用)的严苛环境设计,可靠性指标突出:

  • 宽温工作:工作温度范围-55℃~125℃,覆盖绝大多数应用场景的环境温度;
  • 功率降额:125℃时功率降额至0,100℃时降额至1.2W,避免高温下的性能衰减;
  • 抗冲击与振动:符合IPC-9701振动测试标准,可承受机械应力,适配车载、工业等振动环境;
  • 长期稳定性:额定功率下连续工作1000小时,阻值变化率≤0.5%,确保设备长期可靠运行。

五、选型与使用注意事项

为确保RLP25FEER040的性能与寿命,使用时需注意以下要点:

  1. 功率降额设计:建议实际工作功率不超过额定功率的80%(≤1.6W),避免长期过热;
  2. 散热优化:PCB焊盘需适当加宽(建议≥2mm),增加铜箔面积提升散热效率,避免局部过热导致阻值漂移;
  3. 焊接工艺:无铅回流焊温度曲线需符合IPC J-STD-020标准,焊接温度≤260℃(峰值),时间≤30秒;
  4. 精度匹配:若需更高精度(如±0.5%),可选择大毅科技同系列高精度型号;若需更大功率(如5W),需切换至更大封装(如3920);
  5. 过流防护:实际工作电流不超过7A,避免突发过流损坏电阻,可搭配保险丝等防护元件。

综上,大毅科技RLP25FEER040凭借高精度、高功率密度、宽温稳定等特性,成为中小电流采样场景的优选元件,可有效提升设备的电流检测精度与可靠性。

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