WMSIC Electronic Components

KOA RK73H1ETTP1803F

ModelRK73H1ETTP1803F
Package0402
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 24+

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Technical data

Product details

20 specifications

Core information

Product name
KOA RK73H1ETTP1803F
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
RK73H1ETTP1803F
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.011g
Electronic Component
180kΩ
Electronic Component
1
Electronic Component
BM0265719875
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.

RK73H1ETTP1803F厚膜贴片电阻产品概述

RK73H1ETTP1803F是日本KOA公司推出的一款0402封装厚膜贴片电阻,定位于中小功率、常规精度的基础电子元件,广泛适配消费电子、工业控制、汽车辅助电路等场景,凭借稳定的性能和紧凑的尺寸成为高密度PCB设计的常用选型。

一、产品核心身份与基本定位

作为KOA电阻产品线中的常规型号,RK73H1ETTP1803F属于厚膜贴片电阻范畴,核心作用是实现电路中的分压、限流、信号调节等基础功能。其设计兼顾成本与性能,适合批量应用于对精度要求非极致(±1%)、功率需求中等(100mW)的电子设备,尤其适配小型化、高密度的PCB布局(如智能手机、智能穿戴设备)。

二、关键性能参数详解

该型号的核心参数直接决定适用场景,具体如下:

  • 阻值与精度:标称阻值180kΩ(对应贴片电阻代码“1803”,即180×10³Ω),精度±1%——满足大多数常规电路的误差要求,无需额外校准;
  • 功率与电压:额定功率100mW(0.1W),最大工作电压75V——适用于低功率信号电路,避免高压场景下的击穿风险;
  • 温度特性:温度系数±100ppm/℃——温度每变化1℃,阻值变化约0.018kΩ(180kΩ×100×10⁻⁶),可稳定适配-55℃~+155℃的宽温环境;
  • 工作温度范围:-55℃~+155℃——覆盖工业级环境(如户外设备高低温循环)及部分汽车辅助电路的温度需求。

三、封装与结构特点

  • 封装尺寸:0402(公制1005,即1.0mm×0.5mm)——属于小型贴片封装,可大幅节省PCB空间,适合高密度集成设计;
  • 厚膜结构:采用陶瓷基板+厚膜电阻层工艺,通过丝网印刷、高温烧结形成电阻膜,再经电极化处理——相比薄膜电阻成本更低,相比碳膜电阻稳定性更好,适合批量生产。

四、典型应用场景

RK73H1ETTP1803F的参数特性使其适配多种场景:

  1. 消费电子:智能手机音频信号分压、平板电池管理系统(BMS)辅助限流;
  2. 工业控制:PLC输入输出接口电路、传感器信号调理模块;
  3. 汽车电子:仪表盘背光控制、车身控制模块(BCM)辅助信号电路(适配辅助级需求);
  4. 通信设备:基站射频单元辅助偏置、路由器电源滤波分压。

五、可靠性与环境适应性

  • 温度稳定性:宽温范围下阻值变化控制在±1%以内,满足长期高低温环境使用;
  • 机械可靠性:0402封装适配SMT贴装,焊接后机械强度良好,可耐受常规振动(如汽车行驶振动);
  • 耐候性:厚膜结构对湿度(≤90%)、轻度腐蚀环境有一定耐受能力,适合户外或工业厂房。

六、选型与使用注意事项

  1. 选型匹配:若需更高精度(±0.1%)或更大功率(≥1W),需更换型号;电压超75V需串联分压;
  2. 功率降额:实际功率建议不超额定值的80%(80mW),避免长期老化导致阻值漂移;
  3. 焊接要求:适配SMT回流焊(峰值220~260℃,≤10s),手工焊接温度≤350℃、时间≤3s;
  4. 温度系数考量:精密测量仪器需评估温度变化影响,必要时更换低温度系数型号。

RK73H1ETTP1803F凭借平衡的性能、紧凑的尺寸和可靠的稳定性,成为电子设计中常规贴片电阻的优选之一,尤其适合成本敏感且需小型化的批量应用场景。

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