WMSIC Electronic Components

KOA RK73H1ETTP9091F

ModelRK73H1ETTP9091F
Package402
BrandKOA
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 23+

Available for RFQ

Technical data

Product details

20 specifications

Core information

Product name
KOA RK73H1ETTP9091F
Type
KOA
Unit
Electronic Component
Minimum package
10000 圆盘

Technical parameters

Power
100mW
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
KOA
Electronic Component
RK73H1ETTP9091F
Electronic Component
1
Package
402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.011g
Electronic Component
9.09kΩ
Electronic Component
1
Electronic Component
BM0264921218
Operating Temperature
55℃~+155℃
Operating Voltage
75V
Electronic Component
±100ppm/℃

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

RK73H1ETTP9091F 厚膜电阻产品概述

一、产品定位与核心特性

RK73H1ETTP9091F是日本KOA公司推出的0402封装厚膜表面贴装电阻,专为高密度、高可靠性电子电路设计,核心聚焦「小型化+精密阻值+宽温适应性」三大优势,适配消费电子、汽车电子、工业控制等多领域需求。

其核心特性可总结为:

  • 精密阻值:9.09kΩ±1%,覆盖常见分压比(如1/11分压);
  • 小型化封装:0402(英制)/1005(公制),适配紧凑PCB布局;
  • 宽温稳定:-55℃~+155℃工作范围,±100ppm/℃温度系数;
  • 额定参数:100mW(1/10W)功率、75V额定电压,兼顾功率与电压承载。

二、关键参数深度解析

(1)阻值与精度:满足精密电路需求

标称阻值9.09kΩ±1%,属于厚膜电阻中的「精密级」。该阻值并非随机设计——9.09kΩ是10kΩ的0.909倍(近似1/11),常被用于分压电路、运放偏置、ADC参考电压调理(例如将5V输入分压为0.4545V,适配12位ADC小信号输入),精度±1%可避免阻值偏差导致的测量误差。

(2)功率与电压:安全边界明确

  • 功率额定值:100mW(1/10W),常温(25℃)下连续工作最大耗散功率;环境温度升高需按降额曲线调整(如125℃时降额至约50mW);
  • 电压额定值:75V,电阻两端最大允许直流/交流电压。需注意:功率与电压不可同时突破——若电压为75V,功率约为620mW(远超额定),实际使用需取「功率≤100mW」或「电压≤30V」(√(100mW×9.09kΩ)。

(3)温度特性:宽温下保持稳定

  • 温度系数(TCR):±100ppm/℃,即温度每变1℃,阻值变±0.01%;155℃时阻值变化约±1.3%,仍满足汽车电子(-40℃~+125℃)、工业控制需求;
  • 工作温度:-55℃~+155℃,覆盖极端环境(沙漠高温、极地低温),适配AEC-Q200汽车级标准。

三、封装与物理特性

采用0402表面贴装封装(英制:0.04″×0.02″;公制:1.0mm×0.5mm),具备三大优势:

  1. 高密度布局:尺寸仅1.0×0.5mm,大幅减少PCB占用,适配智能手机、智能手表等便携设备;
  2. 安装便捷:无引线设计,适配回流焊、波峰焊自动化生产,效率高;
  3. 抗干扰性:小型封装降低寄生电感/电容,适合射频前端、WiFi模块等高频电路。

四、典型应用场景

结合参数特性,RK73H1ETTP9091F的典型应用集中在:

(1)消费电子:便携设备高密度电路

  • 手机主板:射频信号分压网络、电源管理IC反馈电阻;
  • 智能手表:心率传感器偏置电阻、加速度计信号调理;
  • 蓝牙耳机:音频放大负载电阻、蓝牙模块匹配电阻。

(2)汽车电子:宽温环境稳定应用

  • 仪表盘:车速传感器信号调理、LED背光限流电阻;
  • 车身控制模块(BCM):车门开关分压电阻、温度传感器匹配电阻;
  • 车载通信:CAN总线终端匹配电阻(宽温适配车载环境)。

(3)工业控制: harsh环境可靠性

  • PLC输入模块:模拟量分压电阻、数字量输入限流电阻;
  • 工业传感器:温度/压力传感器信号调理;
  • 电源设备:开关电源反馈网络、EMI滤波电阻。

五、可靠性与品质保障

作为KOA核心产品,具备以下可靠性优势:

  1. 厚膜工艺优势:丝网印刷+烧结工艺,阻值稳定性优于碳膜,抗10G以上振动;
  2. 环保合规:符合RoHS 2.0、REACH标准,无铅无镉;
  3. KOA管控:自动化检测+老化筛选,参数一致性达99.5%以上,售后1年质保。

六、总结

RK73H1ETTP9091F是高性价比精密厚膜电阻,以0402小型封装、±1%精度、宽温适应性为核心,覆盖多领域需求。明确的额定参数、稳定的温度特性,可降低电路设计风险,是紧凑电路中替代碳膜电阻的理想选择。

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