WMSIC Electronic Components

KOA RK73H1ETTP40R2F

ModelRK73H1ETTP40R2F
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 26+

Available for RFQ

Technical data

Product details

20 specifications

Core information

Product name
KOA RK73H1ETTP40R2F
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
RK73H1ETTP40R2F
Electronic Component
1
Package
402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.011g
Electronic Component
40.2Ω
Electronic Component
1
Electronic Component
BM0264574377
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.

RK73H1ETTP40R2F厚膜电阻器产品概述

一、产品定位与核心参数

RK73H1ETTP40R2F是KOA品牌针对中小功率高密度电路设计的厚膜电阻器,核心参数聚焦阻值精度、功率容量与环境适应性,具体如下:

  • 阻值:标称40.2Ω(偏差范围±1%);
  • 精度:工业级±1%,满足多数电路对阻值一致性的要求;
  • 功率:额定100mW(即1/10W),适配低功耗设计;
  • 电压:最大工作电压75V(长期工作建议降额至60V以下);
  • 温度特性:±100ppm/℃温度系数,阻值随温度变化可控;
  • 工作温度:-55℃至+155℃,覆盖宽温应用场景。

二、关键性能特性解析

1. 阻值精度与稳定性

±1%的精度等级可避免电路因阻值偏差导致的信号失真或功率分配不均。例如在分压电路中,该精度能将输出电压偏差控制在0.4Ω以内(40.2Ω×1%),无需额外校准即可满足基本性能要求。

2. 功率与电压能力

100mW额定功率适配低功耗设备(如智能穿戴、小型传感器),75V最大电压覆盖多数中小信号电路的电压上限。实际应用需遵循降额规范:环境温度超过70℃时,功率需按曲线递减(如125℃时降额至50mW),避免过热失效。

3. 温度稳定性

±100ppm/℃的温度系数意味着阻值随温度变化的幅度可控:以25℃为基准,温度升至155℃(变化130℃)时,阻值变化约0.52Ω(40.2Ω×0.0001×130),总波动范围39.68Ω~40.72Ω,满足宽温环境下的性能稳定需求。

三、封装设计与工艺兼容性

该电阻采用0402封装(英制尺寸,对应公制1005),体积小巧(长1.0mm×宽0.5mm),可大幅缩小PCB布局面积,适配手机、智能手表等小型化设备。

厚膜电阻的结构设计(陶瓷基底+厚膜电阻浆料)兼顾成本与性能:

  • 相比薄膜电阻,厚膜工艺成本更低,适合批量应用;
  • 相比线绕电阻,无电感效应,可用于高频电路辅助匹配;
  • 焊盘适配回流焊、波峰焊工艺,无铅环保设计符合RoHS标准,满足电子制造通用要求。

四、可靠性与环境适应性

1. 宽温可靠性

-55℃至+155℃的工作温度覆盖工业级、部分汽车电子场景(如户外传感器、车载辅助系统),厚膜陶瓷基底具有良好的热稳定性,长期工作阻值漂移小。

2. 耐环境特性

陶瓷基底耐湿性、耐腐蚀性优于普通电阻,可在高湿度(如浴室、户外设备)或轻微腐蚀性环境下稳定工作。存储条件建议为-40℃~+85℃、湿度≤85%,避免极端环境下的性能退化。

五、典型应用场景

基于参数与封装优势,该电阻适用于以下领域:

  1. 消费电子:智能手机传感器接口(加速度计、心率传感器限流)、平板电源分压电路;
  2. 工业控制:小型PLC输入输出模块、温度传感器信号调理;
  3. 通信设备:路由器射频前端匹配电阻、小型基站辅助电路;
  4. 汽车电子:胎压监测系统(TPMS)、车内氛围灯控制电路(需确认汽车级认证时可结合KOA定制版本);
  5. 医疗设备:家用血压计、血糖仪信号处理电路(需医疗级认证时需额外验证)。

六、总结

RK73H1ETTP40R2F是一款高性价比厚膜电阻,平衡了精度、功率、温度稳定性与成本,适配多领域中小功率电路需求,是批量应用的理想选择。其0402封装与宽温特性,尤其适合小型化、宽温环境的设备设计。

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