WMSIC Electronic Components

TA-I Technology RL12FTNR120

ModelRL12FTNR120
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
RL12FTNR120
Type
TA-I Technology
Minimum package
5000 圆盘

Technical parameters

Power
500mW
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RL12FTNR120
Electronic Component
1
Package
1206
Electronic Component
Current Sense Resistor / Shunt
Electronic Component
±1%
Electronic Component
0.035g
Electronic Component
120mΩ
Electronic Component
1
Electronic Component
BM0264549232
Electronic Component
SMD
Electronic Component
±200ppm/℃
Resistor Type
Metal Film 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.

RL12FTNR120电流采样电阻产品概述

一、产品定位与核心价值

RL12FTNR120是大毅科技推出的1206封装贴片式电流采样电阻(分流器),专为中高精度电流检测场景设计。其核心价值在于在紧凑的1206封装下,实现了「高精度阻值+稳定温度特性+合理功率密度」的平衡,可满足电源系统、汽车电子、便携设备等领域对电流监控的可靠性需求,同时适配自动化生产流程,降低终端产品的设计与制造成本。

二、关键性能参数深度解析

该电阻的核心参数直接决定应用适配性,具体解析如下:

(1)阻值与精度:±1%高精度满足检测需求

阻值为120mΩ(0.12Ω),属于电流采样电阻典型低阻区间;精度达**±1%**,在同封装分流器中属于较高水平——25℃标准温度下,实际阻值与标称值偏差不超过1.2mΩ,可有效减少电流检测的基础误差(电流检测公式I=V/R,R误差直接影响I的精度)。

(2)功率与功率密度:小体积承载500mW功率

额定功率为500mW(0.5W),结合1206封装(3.2mm×1.6mm)的紧凑尺寸,功率密度表现优异。根据功率公式P=I²R,可推算最大允许电流约2.04A(I=√(0.5/0.12)≈2.04A),覆盖多数中小功率电路的电流检测场景(如10W以内DC-DC转换器、便携设备充放电回路)。

(3)温度系数:±200ppm/℃保障宽温稳定性

温度系数(TCR)为**±200ppm/℃**,即每升高1℃,阻值变化不超过标称值的0.02%。这一参数对宽温应用至关重要——例如汽车电子(-40℃~125℃)中,温度变化165℃时,阻值总变化约±3.3%,结合原始±1%精度,总误差控制在±4.3%以内,满足车载辅助电路需求。

三、封装与安装特性

RL12FTNR120采用1206贴片封装,符合IPC-J-STD-001标准,具备以下优势:

  1. 自动化适配性:尺寸标准化,兼容主流SMT贴片机,支持回流焊、波峰焊工艺,生产效率高;
  2. 小型化设计:footprint仅为传统插件电阻的1/5,可提升终端产品集成度,适合便携设备、小型电源模块;
  3. 散热可靠性:贴片封装热传导路径直接连接PCB,散热效率优于插件电阻,保障500mW功率下长期稳定。

四、典型应用场景

结合参数特性,核心应用场景包括:

(1)开关电源电流监控

在AC-DC适配器、DC-DC降压/升压模块中,用于输出电流采样:通过检测电阻压降(V=I×R),实现过流保护、恒流充电控制、效率监测——±1%精度保障控制逻辑准确性,500mW功率满足中小功率电源需求。

(2)汽车电子辅助电路

适配车载充电器、LED车灯驱动、车身控制模块(BCM)的电流检测:宽温稳定性(±200ppm/℃)适应汽车舱内-40℃~85℃温度变化,1206封装符合车载电子小型化要求。

(3)便携设备电池管理

应用于智能手机、平板电脑、充电宝的电池充放电回路:小体积不占用额外空间,高精度准确监控充放电电流,避免过充/过放,延长电池寿命。

(4)工业控制传感器

用于PLC模块、小型电机驱动的电流检测:稳定温度特性适应工业环境温度波动,满足工业级设备可靠性要求。

五、品牌与可靠性保障

大毅科技作为专业电阻制造商,RL12FTNR120具备以下可靠性优势:

  1. 材料与工艺:采用合金电阻材料(如锰铜),避免碳膜电阻温度漂移问题;
  2. 环保认证:符合RoHS 2.0、REACH标准,无铅无卤,适配绿色制造;
  3. 可靠性测试:经过高温老化、温度循环(-55℃~125℃)、湿度测试,保障5年以上使用寿命。

总结

RL12FTNR120是一款「小体积、高精度、宽温稳定」的贴片电流采样电阻,适合对电流检测精度、集成度有要求的中低端应用场景。参数平衡度高,安装便捷,品牌可靠性有保障,是电源、汽车电子、便携设备等领域的经济适用型选择。

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