WMSIC Electronic Components

KOA RK73H2ATTD1802F

ModelRK73H2ATTD1802F
Package805
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 26+

Available for RFQ

Technical data

Product details

20 specifications

Core information

Product name
KOA RK73H2ATTD1802F
Type
KOA
Unit
Electronic Component
Minimum package
5000 圆盘

Technical parameters

Power
250mW
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
KOA
Electronic Component
RK73H2ATTD1802F
Electronic Component
1
Package
805
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.027g
Electronic Component
18kΩ
Electronic Component
1
Electronic Component
BM0265646448
Operating Temperature
55℃~+155℃
Operating Voltage
150V
Electronic Component
±100ppm/℃

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

KOA RK73H2ATTD1802F厚膜电阻产品概述

一、核心参数与封装规格

RK73H2ATTD1802F是KOA针对中小功率电路设计的0805封装厚膜电阻,核心参数完全匹配工业级常规需求,具体如下:

  • 阻值与精度:18kΩ(标识代码“1802”对应18×10²Ω),精度±1%(满足大多数信号调理、分压场景的误差要求);
  • 功率与电压:额定功率250mW(1/4W,0805封装小功率电阻的典型值),最大工作电压150V(直流/交流峰值电压,支撑低中压电路);
  • 温度特性:温度系数(TCR)±100ppm/℃(温度每变化1℃,阻值漂移≤1.8Ω),工作温度范围-55℃~+155℃(覆盖工业、汽车级部分场景);
  • 封装尺寸:0805英制封装(公制2012),体积紧凑(2.0mm×1.2mm),适合高密度PCB布局。

二、性能特点解析

1. 精度与稳定性平衡

±1%精度可满足消费电子(如手机音频滤波)、工业控制(如PLC信号衰减)的核心需求;±100ppm/℃的TCR在**-55℃~155℃全温区**内,最大阻值漂移仅3.78Ω(温度差210℃),远低于±1%的精度容限(180Ω),长期使用阻值稳定性可靠。

2. 小功率场景适配

250mW额定功率针对低功耗电路设计,避免功率冗余导致的体积浪费;150V工作电压可支撑12V~48V电源系统的分压监测(如智能家居设备的电源反馈),无需额外并联电阻降额。

3. 工艺与可靠性优势

采用氧化铝陶瓷基片+厚膜电阻浆料烧结工艺,抗机械应力、抗冲击性能优于薄膜电阻;0805封装适合SMT批量贴装,焊接后抗振动性能满足IEC 60068-2-6标准(10~2000Hz振动测试),适合车载、工业等振动场景。

三、典型应用场景

1. 消费电子领域

  • 智能手机/平板:音频Codec输入阻抗匹配(18kΩ保证信号衰减一致性)、触摸传感器分压校准(精准分压实现触摸灵敏度控制);
  • 智能家居:智能音箱电源监测(5V/12V分压反馈)、智能门锁指纹模块限流(保护传感器芯片)。

2. 工业控制领域

  • PLC系统:输入模块信号衰减(24V转3.3V逻辑电平)、输出模块继电器线圈限流;
  • 传感器调理:PT100温度传感器放大电路分压(匹配运放输入阻抗)、压力传感器零点校准。

3. 汽车辅助电子

  • 车载娱乐:收音机天线阻抗匹配(优化接收链路信号)、USB充电口过流保护(限流保护芯片);
  • 车身控制:车门开关信号转换(12V转5V逻辑电平)、车窗电机电流监测(分压检测)。

四、可靠性与环境适应性

  1. 抗环境应力:符合JIS C 5201耐湿标准,抗盐雾、抗潮湿性能优异,适合沿海或潮湿工业场景;
  2. 长期稳定性:1000小时老化测试后阻值变化率≤0.5%,满足工业PLC7×24小时连续工作需求;
  3. 降额指导:125℃以上需按KOA官方曲线降额(155℃时降额至175mW),避免过热损坏。

五、选型匹配建议

  • 若需更高精度(±0.5%):选同系列高精度版RK73H2ATTD1802F05;
  • 若需更高功率(500mW):切换至1206封装的RK73H2ATTD1802F12;
  • 若对TCR要求更高(±50ppm/℃):改用KOA薄膜电阻RN系列(如RN73H2ATTD1802F)。

RK73H2ATTD1802F以平衡的性能、紧凑封装和高性价比,成为消费电子、工业控制、汽车辅助电子等领域的主流选择,尤其适合对精度、稳定性有常规要求且需高密度布局的电路设计。

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