WMSIC Electronic Components

TA-I RLH12FTCR560

ModelRLH12FTCR560
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
RLH12FTCR560
Type
TA-I Technology
Minimum package
5000 圆盘

Technical parameters

Power
1W
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RLH12FTCR560
Electronic Component
1
Package
1206
Electronic Component
Current Sense Resistor / Shunt
Electronic Component
±1%
Electronic Component
0.035g
Electronic Component
560mΩ
Electronic Component
1
Electronic Component
BM0264899880
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RLH12FTCR560采样电阻产品概述

大毅科技作为国内电阻制造领域的专业厂商,其RLH12FTCR560是一款针对中功率电流采样场景优化的合金贴片电阻。凭借精准的阻值控制、高功率密度和稳定的温度特性,这款电阻在电源、电机驱动、电池管理等领域广泛应用,尤其适合紧凑PCB布局的小型化设备。以下从核心属性、参数、设计特点、应用场景等方面详细说明。

一、产品定位与核心属性

RLH12FTCR560属于大毅RLH系列合金采样电阻,核心定位是**“小体积、中功率、高精度”的电流检测解决方案**。它采用贴片1206封装(英制尺寸,对应公制3216),体积仅3.2mm×1.6mm,支持自动化贴装;同时针对采样电阻的低阻值、低漂移需求,采用合金芯体设计,避免了碳膜/金属膜电阻的温度敏感性问题。

二、关键参数详解

这款电阻的核心参数直接决定了其适用场景,具体解析如下:

  • 阻值:560mΩ(0.56Ω):采样电阻常用低阻值设计,可减少电流采样时的压降损失(如1A电流下,压降仅0.56V),避免影响电路正常工作;560mΩ是行业常见采样值,能与现有电源、BMS等电路直接匹配。
  • 精度:±1%:相比±5%的通用电阻,±1%的精度满足大部分工业/消费类场景的需求,比如电源过流保护的精准触发、电池充放电的准确计量。
  • 功率:1W:1206封装下实现1W功率,属于高功率密度设计(常规1206电阻功率多为0.25W/0.5W),可承受更大电流(理论最大电流≈1.34A,实际需按降额规范使用),适配中功率设备。
  • 温度系数(TCR):±100ppm/℃:表示温度每变化1℃,阻值变化±100×10⁻⁶。以25℃为基准,若工作温度升至100℃(变化75℃),阻值仅变化约0.0042Ω,温度稳定性优异,适合宽温环境。
  • 封装与安装:1206贴片:贴片式设计支持SMT自动化贴装,生产效率高;1206体积小巧,能有效节省PCB空间,适合手机充电器、手持设备等紧凑布局。

三、设计与性能特点

  1. 合金芯体低漂移:采用锰铜合金(大毅RLH系列核心材料),相比金属膜/碳膜电阻,温度系数更低,长期使用阻值漂移率<0.5%/1000小时,保证采样精度的一致性。
  2. 高功率密度适配紧凑设计:无需选用更大封装(如1812)即可实现1W功率,直接用于小型化设备,避免PCB空间浪费。
  3. 低寄生参数响应快:贴片封装的寄生电感、电容远低于插件电阻,适合高频开关电源、快速响应的电机驱动电路,避免采样信号失真。
  4. 系列化阻值覆盖:RLH系列覆盖从几十mΩ到几Ω的低阻值范围,方便工程师根据不同电流需求选型(如小电流用100mΩ,大电流用1Ω)。

四、典型应用场景

RLH12FTCR560的参数特性决定了它主要用于电流检测与反馈场景,具体包括:

  1. 电源电路:开关电源、线性电源的输出电流采样,配合MOS管/IC实现过流保护;也可用于电源效率监测。
  2. 电池管理系统(BMS):锂电池组的充放电电流检测,结合BMS芯片计算剩余电量(SOC),同时实现过充/过放保护。
  3. 电机驱动:无刷电机、伺服电机的电流反馈,帮助控制器精准调节转速与扭矩,提升控制精度。
  4. 工业控制:PLC、变频器、伺服系统的电流监测,避免设备过载损坏,提升工业设备可靠性。
  5. 消费类电子:手机充电器、移动电源的电流检测,实现快充模式下的安全控制;也可用于智能家电的电流监测。

五、可靠性与环境适应性

大毅对这款电阻的可靠性经过多轮验证:

  • 宽工作温度:支持-55℃~155℃(行业标准宽温范围),适合低温工业现场、高温车载环境。
  • 耐焊接热:可承受回流焊(峰值260℃)、波峰焊的温度冲击,焊接后阻值无明显漂移,批量生产一致性好。
  • 抗振动冲击:合金芯体结构稳定,加上贴片封装的焊接强度,能承受10G以上振动,适合车载、手持设备。
  • 长期稳定性:经老化测试,阻值漂移率<0.5%/1000小时,满足设备长期运行需求。

总结来说,大毅RLH12FTCR560是一款性价比高、性能稳定的合金采样电阻,适合对精度、功率密度有要求的中功率电流检测场景,是电源、电机、BMS等领域的常用选型。

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