WMSIC Electronic Components

TA-I RMS04FT2212

ModelRMS04FT2212
Package0402
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
RMS04FT2212
Type
TA-I Technology
Minimum package
10000 圆盘

Technical parameters

Power
62.5mW
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RMS04FT2212
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.009g
Electronic Component
22.1kΩ
Electronic Component
10
Electronic Component
BM0264548251
Operating Temperature
55℃~+155℃
Operating Voltage
50V
Electronic Component
±100ppm/℃
Resistor Type
Resistor

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

RMS04FT2212 厚膜贴片电阻产品概述

一、产品定位与核心特性

RMS04FT2212是大毅科技推出的0402封装厚膜贴片电阻,定位为小型化、高性价比的通用型电阻,适配消费电子、工业控制、汽车电子等领域对小尺寸、中等精度电阻的需求。核心特性可概括为:

  • 0402超小封装(1.0mm×0.5mm),支持高密度PCB布局;
  • 阻值22.1kΩ±1%,满足精准分压、偏置电路等场景的精度要求;
  • 额定功率62.5mW(1/16W),匹配0402封装的常规功率承载能力;
  • 宽工作温度范围-55℃~+155℃,可应对极端环境(如汽车发动机舱、工业高温区);
  • 温度系数±100ppm/℃,阻值随温度变化稳定,降低环境波动对电路的影响;
  • 最大工作电压50V,满足低/中压电路的电压耐受需求。

二、封装与工艺优势

  1. 0402小型化封装:尺寸仅1.0mm(长)×0.5mm(宽)×0.35mm(厚),比0603封装缩小约60%的面积,适合智能穿戴、蓝牙耳机等便携设备的高密度布局,同时兼容自动化贴装工艺,提升生产效率。
  2. 厚膜工艺核心:采用厚膜印刷+激光微调技术,既保证阻值精度(±1%),又控制了成本(比薄膜电阻低30%左右);端电极采用三层结构(镍/锡/银),耐焊接热性能优异,可承受260℃回流焊3次以上,焊接可靠性高。
  3. 大毅科技工艺特点:通过优化浆料配方,提升电阻膜的附着力与稳定性,避免长期使用中阻值漂移;端电极与PCB的焊接强度符合IPC-J-STD-001标准,抗振动、抗弯折性能突出。

三、关键参数的实际意义

  1. 阻值与精度:22.1kΩ是非常规的“非整数倍”阻值(区别于常见的22kΩ),适合需要精准分压比的电路(如1:221的分压),±1%精度可满足工业控制、消费电子的大部分应用,无需额外校准。
  2. 功率与电压匹配:额定功率62.5mW,最大工作电压50V(注意:实际工作时需满足P=V²/R≤62.5mW,即最大安全电压约37V,避免过压损坏);环境温度超过70℃时需按1%/℃降额,125℃时功率降至31.25mW。
  3. 温度系数:±100ppm/℃意味着温度每变化100℃,阻值变化±0.01%,可满足-55℃至155℃宽温区的稳定工作,例如汽车电子中发动机舱附近的传感器偏置电路。
  4. 工作温度范围:覆盖工业级(-40℃+85℃)与汽车级(-55℃+155℃)要求,可用于高温环境下的工业控制模块、汽车辅助驾驶系统等。

四、典型应用场景

  1. 消费电子:智能手机、蓝牙耳机的信号分压电路(如麦克风偏置、音频信号衰减);电视、机顶盒的电源偏置电阻(低功率需求)。
  2. 工业控制:小型传感器(如温度、压力传感器)的信号调理电路(精准分压);PLC模块的辅助电路(宽温适应性)。
  3. 汽车电子:车载信息娱乐系统的低功率电路;发动机舱附近的传感器接口电路(耐高低温)。
  4. 物联网设备:智能穿戴(如智能手表)的心率传感器偏置电阻;智能家居设备的信号衰减电路。

五、可靠性与环境适应性

  1. 耐环境性能:
    • 湿度测试:85℃/85%RH环境下1000h,阻值变化≤1%;
    • 温度循环:-55℃~+155℃循环1000次,阻值变化≤0.5%;
    • 耐焊接热:260℃回流焊3次,端电极无脱落、阻值无漂移。
  2. 机械可靠性:抗弯折测试(1mm弯曲)后阻值变化≤0.2%;振动测试(10~2000Hz,1g加速度)100h无失效,适合移动设备与车载场景。
  3. 环保合规:符合RoHS 2.0与REACH标准,无铅端电极,满足欧盟环保要求。

六、选型与使用注意事项

  1. 功率降额:环境温度T≥70℃时,功率P=62.5mW×(1 - 0.01×(T-70)),例如100℃时P=43.75mW;
  2. 电压限制:实际工作电压V≤√(P×R),避免过压导致电阻烧毁;
  3. 焊接工艺:采用回流焊时,需遵循IPC标准的温度曲线(峰值温度255℃~260℃,时间≤10s),禁止手工焊接(易损伤封装);
  4. 存储条件:未开封产品存储于25℃±5℃、湿度≤60%的环境中,开封后1个月内使用完毕(避免端电极氧化)。

RMS04FT2212凭借小尺寸、高稳定性与宽适应性,成为消费电子、工业与汽车领域中小功率电阻的优选方案,可满足多样化的电路设计需求。

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