WMSIC Electronic Components

TA-I Technology RLP25FEER015

ModelRLP25FEER015
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
RLP25FEER015
Type
TA-I Technology
Minimum package
4000 圆盘

Technical parameters

Power
2W
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RLP25FEER015
Electronic Component
1
Package
2512
Electronic Component
Current Sense Resistor / Shunt
Electronic Component
±1%
Electronic Component
0.084g
Electronic Component
15mΩ
Electronic Component
1
Electronic Component
BM0264549188
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.

RLP25FEER015 产品概述

一、产品简介

RLP25FEER015 是大毅科技推出的一款表面贴装型电流采样电阻(分流器),封装为通常所称的 2512 SMD 规格(约 6.35 mm × 3.2 mm)。该器件阻值为 15 mΩ,额定功率 2 W,阻值公差 ±1%,温度系数(TCR)为 ±50 ppm/°C。针对电流检测与功率测量场景进行了优化,适合电源管理、电池管理、马达控制及各种功率电子系统中的精密电流采样应用。

二、核心参数(要点)

  • 型号:RLP25FEER015
  • 品牌:大毅科技
  • 封装:2512(SMD)
  • 阻值:15 mΩ
  • 阻值公差:±1%
  • 额定功率:2 W
  • 温度系数(TCR):±50 ppm/°C
  • 安装方式:贴片

三、性能与计算参考

  • 最大连续测量电流(理论):Imax = sqrt(P/R) = sqrt(2 W / 0.015 Ω) ≈ 11.5 A。此值为在理想散热条件下的理论值,实际允许电流应考虑环境温度、PCB散热能力与封装旁铜箔面积等因素进行修正与降额。
  • 在 I = 11.5 A 时的电压降约为 V = I·R ≈ 0.173 V(173 mV),功耗接近 2 W。
  • 小信号举例:I = 1 A 时,Vshunt = 15 mV,功耗约 15 mW。
  • 温漂说明:TCR = ±50 ppm/°C,意味着阻值随温度变化每升高 1°C 约变化 0.005%(100°C 时约 0.5%)。

四、主要特点(适用价值)

  • 高精度:±1% 阻值公差,可满足多数精密电流测量场合对准确度的要求;
  • 稳定性好:±50 ppm/°C 的低温漂确保在宽温度范围内测量误差受温度影响较小;
  • 额定功率 2 W:适合中等电流等级的直接采样,适用于电源、充放电和电机驱动等应用;
  • SMD 封装(2512):利于自动贴装、批量生产与 PCB 密集布线;
  • 低阻值设计:电压降小,减小对被测回路的影响,同时便于高速动态电流测量。

五、布局与使用建议

  • 散热:在 PCB 布局时建议在采样电阻下方或两侧设计较大铜箔以提升散热能力,并使用较厚的 PCB 铜层(如 2 oz)以提升载流与散热能力,从而保证实际允许电流接近理论值。
  • 测量接法:为了提高测量精度与抵消 PCB 与焊盘引起的寄生电阻,推荐采用四线(Kelvin)测量法或将差分放大器的输入端尽量靠近采样电阻安装,减少引线电阻与共模干扰影响。
  • 布线原则:采样回路的电流路径尽量短且粗,测量放大器输入线应单独回流,避免与大电流回路并行引入噪声。
  • 焊接工艺:支持常规回流焊贴装流程,建议按大毅科技提供的回流焊和焊盘设计规定执行,以确保可靠焊接与长期稳定性。

六、典型应用场景

  • 电池管理系统(BMS)中的充放电电流监测;
  • 开关电源与点对点电源模块的输入/输出电流检测;
  • 电机驱动与伺服控制系统中电流反馈环路;
  • LED 驱动、逆变器与UPS等功率电子设备的能耗统计与保护;
  • 工业控制、服务器电源分配与电流限流保护等。

七、设计注意事项与可靠性

  • 温度与功率降额:在高环境温度或受限散热条件下,应适当降低允许电流与功率;长期在高功耗下工作可能导致阻值漂移,应在设计时预留裕量。
  • 冲击与振动:作为 SMD 元件,在机械冲击或振动环境下需保证 PCB 固定良好并遵循工业级封装安装规范。
  • 精度保证:若系统需更高精度,可选用更低温漂或更高精度的分流器,或在系统校准中补偿采样电阻的温漂与偏差。

八、订购信息与规格摘要

  • 型号:RLP25FEER015
  • 规格摘要:15 mΩ / ±1% / 2 W / ±50 ppm/°C / 2512 SMD
  • 适用场景:中高精度电流测量、功率监控与保护回路

如需进一步的机械尺寸图、焊盘建议(推荐 PCB land pattern)、温度升高曲线或在特定工作条件(如 85°C、不同铜厚)下的可允许电流曲线,请提供目标 PCB 板栅结构与工作环境,我可据此给出更具体的布板与散热建议。

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