WMSIC Electronic Components

TA-I RLH12FTCR470

ModelRLH12FTCR470
Package1206
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
RLH12FTCR470
Type
TA-I Technology
Minimum package
5000 圆盘

Technical parameters

Power
1W
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RLH12FTCR470
Electronic Component
1
Package
1206
Electronic Component
Current Sense Resistor / Shunt
Electronic Component
±1%
Electronic Component
0.035g
Electronic Component
470mΩ
Electronic Component
1
Electronic Component
BM0265427461
Electronic Component
SMD
Electronic Component
±100ppm/℃
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RLH12FTCR470 贴片采样电阻产品概述

大毅科技(Ralec)推出的RLH12FTCR470是一款专为电流检测设计的1206封装贴片采样电阻,针对工业控制、电源管理、电池系统等场景,平衡了低阻值、稳定精度与功率密度,是中低功率电流监测的实用选择。

一、产品定位与核心价值

RLH12FTCR470属于通用型电流采样电阻,核心作用是将电路中的电流转换为可检测的电压信号(依据欧姆定律(I=V/R))。其设计重点在于:以小体积(1206封装)实现合理功率承载,同时保证阻值精度与温度稳定性,满足多数工业级应用的电流监测需求,无需额外复杂校准即可稳定工作。

二、核心参数深度解析

1. 阻值与精度

阻值为470mΩ(0.47Ω),精度±1%——该精度处于工业级电流检测的主流区间,既能覆盖大多数常规场景(如电源过流保护、电机电流反馈),又避免了高精度电阻的成本溢价。

2. 功率与电流承载

额定功率1W,结合阻值可计算最大连续工作电流约为(\sqrt{P/R} = \sqrt{1/0.47} ≈ 1.46A);若参考大毅官方降额曲线,峰值电流可提升至2A以上(需结合实际工作温度与占空比),适配中等电流回路的需求。

3. 温度系数(TCR)

温度系数为**±100ppm/℃**,表示每变化1℃,阻值变化±0.01%。以产品典型工作温度范围(-55℃~125℃)计算,最大阻值变化约为(470mΩ × 100ppm × 180℃ = 8.46mΩ),变化率约1.8%——结合±1%精度,整体阻值波动可控,保证不同温度下的采样准确性。

4. 封装与功率密度

1206封装(公制3216,尺寸3.2mm×1.6mm),在小体积下实现1W功率,功率密度约为195mW/mm²,适合紧凑设计的产品(如便携式电源、小型电机驱动器)。

三、封装与安装兼容性

RLH12FTCR470采用标准1206贴片封装,具备以下安装优势:

  • 支持自动化SMT贴装,适配主流贴片机,提升生产效率;
  • 兼容回流焊/波峰焊工艺,端电极采用“镍阻挡层+无铅锡镀层”设计,耐260℃回流焊10秒无失效,焊接可靠性高;
  • 符合IPC J-STD-001焊接标准,可直接用于工业级产品的批量生产。

四、典型应用场景

该产品针对以下场景优化:

  1. 电源管理模块:DC-DC转换器、AC-DC适配器的输出电流采样,过流保护电路的电流检测,保障电源稳定输出;
  2. 电池管理系统(BMS):电动车、储能电池的单体/模组电流监测,实时监控充放电电流,防止过充过放;
  3. 电机驱动系统:伺服电机、无刷直流电机(BLDC)的电流反馈,实现精准调速与转矩控制;
  4. 工业控制设备:PLC、变频器、伺服驱动器的电流监测,辅助故障诊断与设备安全运行。

五、品牌与可靠性保障

大毅科技作为台湾老牌被动元件厂商,RLH12FTCR470具备以下可靠性优势:

  • 符合RoHS 2.0、REACH环保标准,无有害物质;
  • 通过ISO9001、ISO14001认证,生产流程严格管控;
  • 可靠性测试:高温贮存(125℃×1000h)、温度循环(-55℃~125℃×1000次)、湿度耐久性(85℃/85%RH×1000h),测试后阻值变化率≤1%,保证长期稳定使用。

综上,大毅科技RLH12FTCR470以高性价比的组合,满足了工业控制、电源、BMS等领域对电流采样电阻的核心需求,是中低功率电流监测的可靠选择。

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