WMSIC Electronic Components

TA-I RLH12FTCR160

ModelRLH12FTCR160
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
RLH12FTCR160
Type
TA-I Technology
Minimum package
5000 圆盘

Technical parameters

Power
1W
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RLH12FTCR160
Electronic Component
1
Package
1206
Electronic Component
Current Sense Resistor / Shunt
Electronic Component
±1%
Electronic Component
0.035g
Electronic Component
160mΩ
Electronic Component
1
Electronic Component
BM0264899883
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RLH12FTCR160采样电阻产品概述

大毅科技RLH12FTCR160是一款专为电流检测设计的贴片式高精度功率采样电阻,凭借低阻值、高功率密度与稳定的温度特性,广泛应用于电力电子、电源管理、电池管理等领域,是实现电流精准监控与控制的核心被动元件之一。

一、产品定位与核心功能

RLH12FTCR160属于电流采样电阻范畴,核心作用是将电路中的电流转换为可测量的电压信号(遵循欧姆定律(V=I×R)),为过流保护、恒流控制、功率监测等功能提供关键数据支撑。其0.16Ω(160mΩ)的低阻值特性可有效降低自身功耗对电路效率的影响,同时产生足够的电压降(如2A电流下为0.32V)便于后端检测电路(运放、ADC)识别,平衡了“低功耗”与“高检测灵敏度”的需求。

二、关键参数与性能优势

1. 阻值与精度

  • 阻值:0.16Ω(160mΩ),属于电流采样的典型低阻范围,避免自身功耗过大干扰电路;
  • 精度:±1%,在工业级应用中属于较高水准,可满足多数场景下的电流检测误差要求(如1A电流检测误差≤0.01A)。

2. 功率容量

额定功率:1W,结合0.16Ω阻值,最大允许工作电流约为2.5A((I=\sqrt{P/R}=\sqrt{1/0.16}≈2.5A)),满足中小功率电路的电流采样需求;若降额使用(80%功率余量),可稳定承载2A电流,延长寿命。

3. 温度系数(TCR)

温度系数:±100ppm/℃,表示环境温度每变化1℃,阻值变化百万分之一百。在-55℃~125℃的宽温范围内,温度变化180℃时,阻值最大变化量为(0.16Ω×100ppm×180=0.00288Ω),相对变化率约±1.8%,结合自身±1%精度,整体检测误差可控在±2.8%以内,保证温度波动下的采样稳定性。

4. 低阻特性优势

0.16Ω的低阻值可最大程度降低电阻自身功耗(如1A电流下仅0.16W),同时产生可被常规检测电路识别的电压降,无需额外放大电路即可实现精准检测,简化电路设计。

三、封装与安装特性

1. 封装类型

采用1206封装(英制:0.12英寸×0.06英寸,公制:3.2mm×1.6mm),属于贴片电阻的常用尺寸,兼容性强,可适配多数自动化贴装生产线,同时节省PCB空间,适合高密度电路设计。

2. 安装方式

表面贴装(SMD)无引脚设计,支持回流焊工艺,生产效率高,且避免了插件电阻的体积大、安装工序复杂等问题,适合批量生产。

3. 封装可靠性

采用陶瓷基体(厚膜电阻工艺),散热性能优于塑料封装,可有效降低工作时的电阻温度(如2A电流下温度≤80℃),延长产品寿命;同时封装结构抗机械应力能力强,适合振动环境(如汽车电子、工业设备)。

四、品牌与可靠性保障

1. 品牌背景

大毅科技是专注于被动元件的知名厂商,在功率电阻、电感领域有20余年研发制造经验,产品覆盖工业、汽车、消费电子等领域,以高可靠性与稳定性著称。

2. 可靠性测试

该型号经过多项验证:

  • 高低温循环测试(-55℃~125℃,1000次循环),阻值变化率≤±1%;
  • 负载寿命测试(1W额定功率下,1000小时),阻值变化率≤±1%;
  • 耐焊接热测试(260℃回流焊,10秒),无外观损坏与阻值漂移;
    满足工业级(Industrial Grade)可靠性要求。

3. 环保合规

符合RoHS 2.0、REACH等国际环保标准,无铅无卤,可用于出口产品与绿色制造项目。

五、典型应用场景

  1. 开关电源(SMPS):AC-DC适配器、DC-DC转换器的输出电流采样,实现过流保护与恒压/恒流控制;
  2. 电池管理系统(BMS):电动车、储能电池模组的充放电电流检测,监控电池健康状态;
  3. 电机驱动电路:小型伺服电机、BLDC电机的电流采样,实现精准调速与过载保护;
  4. 工业控制设备:PLC、变频器的电流监控,保障设备稳定运行;
  5. 消费电子:笔记本电脑、充电器的电流检测,提升电源转换效率。

六、选型与使用注意事项

  1. 功率余量:实际工作功率应控制在额定功率的80%以内(即0.8W以内),避免过热导致阻值漂移;
  2. 温区匹配:确认工作环境温度在-55℃~125℃范围内,若环境温度高于85℃,需进一步降低功率余量至70%;
  3. PCB布线:由于是低阻,需缩短采样路径(如将电阻靠近电流路径),避免PCB寄生电阻(通常为mΩ级)影响检测精度;
  4. 精度升级:若需更高精度(如±0.5%),可选择大毅同系列型号RLH12FTCR160F(“F”代表±0.5%精度)。

RLH12FTCR160凭借平衡的性能与可靠性,成为中小功率电流检测场景的高性价比选择,可满足多数工业与消费电子领域的电流采样需求。

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