WMSIC Electronic Components

TA-I Technology RLH12FTCR120

ModelRLH12FTCR120
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
RLH12FTCR120
Type
TA-I Technology
Minimum package
5000 圆盘

Technical parameters

Power
1W
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RLH12FTCR120
Electronic Component
1
Package
1206
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.076g
Electronic Component
120mΩ
Electronic Component
1
Electronic Component
BM0264899869
Operating Temperature
55℃~+155℃
Electronic Component
±100ppm/℃
Electronic Component
Electronic Component
Electronic Component
5000

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

RLH12FTCR120 合金电阻产品概述

RLH12FTCR120是大毅科技(TA-I TECHNOLOGY) 推出的1206封装合金电阻,专为低阻值电流检测、高功率密度场景设计,核心参数覆盖汽车电子、工业控制、电源系统等领域的主流需求,兼具宽温稳定性与可靠性。

一、产品基本参数梳理

该电阻的核心参数清晰明确,可直接匹配电路设计需求:

  • 品牌与系列:大毅科技RLH系列(合金电阻主力产品线)
  • 封装规格:1206(英制,对应公制3216,尺寸3.2mm×1.6mm)
  • 阻值与精度:120mΩ(毫欧),精度±1%(满足多数电流检测的精度要求)
  • 功率等级:额定功率1W(1206小封装下实现高功率密度,优于常规薄膜电阻)
  • 温度系数(TCR):±100ppm/℃(阻值随温度变化的稳定性较好)
  • 工作温度范围:-55℃~+155℃(覆盖汽车级及工业级极端环境)

二、关键特性与工艺优势

RLH12FTCR120基于合金电阻技术路线,结合大毅封装工艺,具备以下核心优势:

  1. 低阻高功率密度:120mΩ低阻值可减少采样电阻自身功耗对电路的影响,1W额定功率在1206封装下实现,稳态电流承载能力约91A(由(I=\sqrt{P/R})计算),峰值电流承受能力更强;
  2. 宽温阻值稳定性:±100ppm/℃的TCR在-55℃~155℃范围内,阻值最大变化量仅约2.52mΩ(120mΩ×100e-6×210℃),变化率小于2.1%,满足宽温环境下的精度需求;
  3. 耐环境可靠性:采用陶瓷基封装材料,抗机械应力、耐温性优异,可通过高温老化、温度循环等可靠性测试,适合车载、工业等长期高负荷场景;
  4. 激光修调精度:生产过程中采用激光微调技术,保证±1%的阻值精度一致性,批次间差异小,便于批量电路设计。

三、典型应用场景

RLH12FTCR120的参数特性使其在以下领域广泛应用:

  1. 电源系统:DC-DC转换器、开关电源的电流检测电阻,低阻减少功耗,高功率承受启动/负载突变时的瞬时电流;
  2. 电池管理系统(BMS):电动车、储能电池的充放电电流采样,宽温范围适配户外/车载环境,精度满足SOC(荷电状态)计算需求;
  3. 电机驱动:伺服电机、BLDC(无刷直流电机)的电流反馈回路,高功率密度适配紧凑的驱动模块;
  4. 车载电子:汽车ECU(电子控制单元)、车灯控制、动力系统的电流监测,符合汽车级温度及可靠性要求;
  5. 工业控制:PLC(可编程逻辑控制器)、变频器的电流检测,耐温抗干扰,适合工业现场的极端环境。

四、使用与选型注意事项

为保证产品性能及可靠性,需注意以下要点:

  1. 功率降额:工作温度超过125℃时,需按大毅官方降额曲线降低功率使用(例如155℃时建议功率不超过0.8W),避免热失效;
  2. 焊接工艺:采用回流焊时,需遵循IPC-J-STD-020标准,峰值温度控制在260℃以内(持续时间≤10秒),防止封装材料损坏;
  3. 电路布局:电流检测应用中,应尽量将电阻靠近采样点,减少走线电阻对采样精度的影响,同时避免与高压/高频元件近距离布局;
  4. 存储条件:未开封产品需存储在温度≤30℃、湿度≤60%的环境中,开封后建议3个月内使用完毕,避免受潮影响焊接质量。

五、品牌与合规性

大毅科技作为台湾老牌被动元件厂商,RLH系列电阻符合以下标准:

  • 环保标准:RoHS 2.0、REACH(无有害物质);
  • 汽车级认证:AEC-Q200(行业内该系列主流产品均通过此汽车级可靠性认证);
  • 可靠性保障:通过高温寿命测试(155℃下1000小时阻值变化≤±0.5%)、温度循环测试(-55℃~155℃循环500次阻值稳定)。

该产品凭借低阻、高功率、宽温稳定的特性,成为电流检测及功率应用领域的高性价比选择,适配多数中高端电子设备的设计需求。

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