WMSIC Electronic Components

TA-I RMS04FT9091

ModelRMS04FT9091
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
RMS04FT9091
Type
TA-I Technology
Minimum package
10000 圆盘

Technical parameters

Power
62.5mW
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RMS04FT9091
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.009g
Electronic Component
9.09kΩ
Electronic Component
10
Electronic Component
BM0264899867
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.

RMS04FT9091 厚膜贴片电阻产品概述

RMS04FT9091是大毅科技推出的一款0402封装厚膜贴片电阻,针对高密度电路设计需求优化,以精准阻值、小体积和宽温适应性为核心特点,广泛适用于消费电子、工业控制、可穿戴设备等领域的精密信号处理与电源电路。

一、产品核心身份与定位

该电阻属于大毅科技厚膜贴片电阻系列中的小功率高精度型号,聚焦“空间紧凑+性能稳定”的双重需求:

  • 封装尺寸为0402(英制,对应公制1005),体积仅约1.0mm×0.5mm,是小型化电路的理想选择;
  • 阻值9.09kΩ为工业常用精密阻值(常与90.9kΩ配合实现1:10分压),±1%精度满足大多数精密电路的误差要求,无需采用更高成本的0.1%/0.05%精度电阻。

二、关键电气性能参数解析

2.1 阻值与精度

  • 标称阻值:9.09kΩ(即9090Ω),符合E96系列精密阻值标准(E96系列每1%精度对应1个阻值,9.09kΩ为其中典型值);
  • 精度等级:±1%,在25℃环境下,实际阻值范围为8999.1Ω~9180.9Ω,可覆盖大部分信号调理、分压电路的误差需求。

2.2 功率与电压限制

  • 额定功率:62.5mW(即1/16W),是0402封装厚膜电阻的常规功率等级,需注意:实际工作功率需≤额定功率,否则会导致阻值漂移甚至烧毁;
  • 工作电压:50V(额定电压),需结合功率参数验证:若工作电压为50V,通过电阻的电流为I=V/R≈5.5μA,此时功率P=I×V≈0.275mW,远低于额定功率,实际需以“功率不超限”为核心限制(最大允许电流I_max=√(P/R)≈2.65μA,对应最大电压V_max≈24V)。

2.3 温度系数(TCR)

  • 温度系数:±100ppm/℃,即温度每变化1℃,阻值变化±0.01%;
  • 举例:若工作温度从25℃升至155℃(变化130℃),阻值最大漂移为±1.3%,仍在电路可接受范围内,满足宽温环境下的稳定性需求。

三、物理封装与结构特性

3.1 封装尺寸

0402封装(英制命名:长度0.04英寸×宽度0.02英寸),公制尺寸为1.0mm×0.5mm×0.3mm(典型值),适合高密度PCB布局(如智能手机主板、可穿戴设备模块)。

3.2 结构设计

采用厚膜工艺制作:以氧化铝陶瓷为基底,印刷厚膜电阻浆料(如钌基浆料),经高温烧结形成电阻层,再制作端电极(镀锡/镍);相比碳膜电阻,厚膜电阻的耐温性、稳定性更优;相比薄膜电阻,成本更低,适合大规模应用。

3.3 焊接兼容性

端电极兼容常规贴片焊接工艺:

  • 回流焊:需遵循IPC标准温度曲线(峰值温度230~245℃,时间≤40秒);
  • 波峰焊:需注意预热温度(≤150℃),避免热冲击导致阻值漂移。

四、环境适应性与可靠性

4.1 工作温度范围

  • 宽温范围:-55℃+155℃,覆盖工业级(-4085℃)和部分高温场景(如汽车发动机舱附近模块),满足极端环境下的长期稳定工作。

4.2 可靠性指标

  • 高温寿命:在125℃、额定功率下工作1000小时,阻值漂移≤0.5%;
  • 耐湿性能:在85℃/85%RH环境下放置1000小时,阻值漂移≤1%;
  • 抗振动冲击:符合IPC-9701标准,可承受10~2000Hz、1g加速度的振动,及1000g(1ms)的冲击。

五、典型应用场景

  1. 精密分压电路:ADC输入分压(如16位ADC的电压基准分压,9.09kΩ与90.9kΩ配合实现1:10分压)、传感器信号调理电路;
  2. 小型电源模块:DC-DC转换器的反馈电阻、软启动电阻、限流电阻(小功率需求下);
  3. 可穿戴设备:智能手环/手表的心率传感器电路、触控电路偏置电阻(利用小封装节省空间);
  4. 工业控制:小型PLC、物联网传感器节点的信号处理电路(宽温适应性满足户外/ harsh环境);
  5. 消费电子:智能手机音频电路、平板电脑触控模块的电阻网络。

六、选型与使用注意事项

  1. 降额使用:实际工作功率建议≤额定功率的70%(即≤43.75mW),避免高温下失效;
  2. 阻值匹配:若用于分压电路,需搭配同精度(±1%)的配套电阻(如90.9kΩ),避免分压比误差;
  3. 焊接工艺:0402封装需注意焊接精度,避免桥接或冷焊;回流焊时需控制峰值温度,防止电阻层氧化;
  4. 环境限制:避免长期在155℃以上工作,同时注意湿度环境下的绝缘性(建议在湿度≤85%RH环境下使用);
  5. 品牌验证:需通过大毅科技正规代理商采购,避免假冒产品导致的可靠性问题。

这款电阻以“小体积+高精度+宽温稳定”为核心优势,平衡了性能与成本,是高密度电路设计中替代更高成本薄膜电阻的理想选择。

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