WMSIC Electronic Components

TA-I Technology RLP25FEER005

ModelRLP25FEER005
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
RLP25FEER005
Type
TA-I Technology
Minimum package
4000 圆盘

Technical parameters

Power
2W
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RLP25FEER005
Electronic Component
1
Package
2512
Electronic Component
Current Sense Resistor / Shunt
Electronic Component
±1%
Electronic Component
0.084g
Electronic Component
5mΩ
Electronic Component
1
Electronic Component
BM0264549194
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.

RLP25FEER005 产品概述

一、产品简介

RLP25FEER005 是大毅科技(Dayi Technology)推出的一款高精度贴片电流采样电阻(分流器),阻值 5 mΩ,额定功率 2 W,精度等级 ±1%,温度系数 ±50 ppm/℃,封装为常见的 2512 封装。该器件专为高电流、低压降检测场合设计,适配电源管理、电池监测、马达驱动及工业控制等应用。

二、主要电气参数

  • 阻值:5 mΩ(0.005 Ω)
  • 精度:±1%(初始容差)
  • 额定功率:2 W(环境和 PCB 散热条件下)
  • 温度系数:±50 ppm/℃(优良的温漂性能)
  • 封装:2512 贴片
  • 典型灵敏度:5 mV/A(1 A → 5 mV;10 A → 50 mV;20 A → 100 mV)
  • 最大连续电流(理论):I = √(P/R) ≈ √(2 / 0.005) = 20 A(实际取决于散热条件,需按厂商给出曲线进行热降额)

三、主要特点

  • 低阻值、低压降:5 mΩ 设计在高电流下仍保持较小的功率损耗,减小系统发热与效率损失。
  • 高精度:±1% 初始精度,可满足大多数精确电流测量需求。
  • 优良温度稳定性:±50 ppm/℃ 的 TCR 保证在宽温度范围内的测量线性与可重复性。举例:温度变化 60℃ 时电阻变化约 0.3%。
  • SMD 2512 封装:适合自动贴装与回流焊工艺,便于量产化组装。
  • 良好的功率承载与热稳定性:适合中高电流采样场景,结合合理 PCB 散热可长期稳定工作。

四、典型应用场景

  • 电池管理系统(BMS)电流检测与SOC 估算
  • 开关电源与 DC-DC 变换器的过流保护与电流反馈
  • 电机驱动与伺服控制中的电流采样
  • 服务器与通信设备电源监控
  • 工业控制与逆变器电流测量

五、使用建议与注意事项

  • 热管理:额定功率基于理想散热条件,实际应用中应通过增大 PCB 铜箔面积、使用散热层或开孔、在底层打散热铜等方式提高散热。高温环境需参考厂方热降额曲线降额使用。
  • 测量布局:建议采用 Kelvin 四端测量或在测量放大器端采用差分输入,减小焊盘与走线引入的附加阻抗对精度的影响。测量放大器应靠近分流器放置,走线短且粗。
  • 焊接工艺:遵循回流温度曲线,避免过热或过度机械应力。回流后避免在分流器区域做过度弯折或热冲击。
  • 位置选择:高端(high-side)采样时需注意常模电压范围与放大器规格;低端采样时要考虑地回路影响与接地噪声。
  • 长期漂移:尽管器件具有良好温漂,仍建议在关键测量场合进行校准并考虑长期漂移与老化因素。

六、封装与可靠性

RLP25FEER005 采用 2512 标准 SMD 封装,便于自动化贴装与回流焊接。常见包装方式为卷带(Tape & Reel),适配 SMT 生产线。器件选用稳定合金与严格工艺,具有良好的机械强度与热循环可靠性,但在应力、冲击与弯曲的 PCB 应用中仍需注意防护。

七、选型参考

  • 若系统电流接近或超过 20 A,应考虑更低阻值或更高功率等级分流器,并评估 PCB 散热能力。
  • 若需要更高精度或更低温漂,可选择更高精度等级或采用温度补偿与校准方案。
  • 在高侧采样应用中,与合适的差分放大器或专用电流感测放大器配合,可获得更好的动态响应与抗干扰能力。

总结:RLP25FEER005 是一款面向中高电流测量、兼顾低电压降与高稳定性的 5 mΩ 贴片分流器,适用于电源、电池与电机等多种场景。合理的 PCB 热设计与测量布局可充分发挥其精度与功率承载能力。若需完整电气/热性能曲线、回流焊工艺规范与可靠性数据,建议查看大毅科技正式数据手册或联系厂商技术支持。

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