WMSIC Electronic Components

KOA RK73H1ETTP1001F

ModelRK73H1ETTP1001F
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 RK73H1ETTP1001F
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
RK73H1ETTP1001F
Electronic Component
1
Package
402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.011g
Electronic Component
1kΩ
Electronic Component
1
Electronic Component
BM0264685678
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.

RK73H1ETTP1001F 厚膜贴片电阻产品概述

一、产品基本定位与品牌背景

RK73H1ETTP1001F是日本KOA株式会社推出的通用型厚膜贴片电阻,属于KOA经典厚膜电阻系列(RK73系列),主打小型化、高可靠性与成本平衡,广泛适配消费电子、工业控制、物联网终端等场景。KOA作为全球被动元件领域的老牌厂商(1940年成立),其电阻产品以工艺稳定、参数一致性高著称,RK73系列更是针对小封装高密度布局优化的核心产品线。

二、核心电气性能参数解析

本产品的关键参数围绕“小型化下的性能平衡”设计,核心参数如下:

1. 阻值与精度

  • 标称阻值:1kΩ(标识编码“1001”:前三位“100”为有效数字,第四位“1”为倍率10¹,即100×10¹=1000Ω);
  • 精度等级:±1%,属于“精密级”范畴,可满足模拟信号调理、电压分压、电流采样等对阻值偏差敏感的电路需求(相比±5%普通电阻,能减少信号失真或采样误差)。

2. 功率与电压能力

  • 额定功率:100mW,适配低功耗电路(如物联网终端、小型传感器模块);实际使用建议降额至70%以下(≤70mW),避免长期过载导致阻值漂移;
  • 最大工作电压:75V,覆盖3.3V/5V/12V/24V等主流低压系统,甚至可支持部分低功率高压场景(如小型电源模块的辅助电路)。

3. 温度系数(TCR)

  • 温漂范围:±100ppm/℃,表示温度每变化1℃,阻值变化±0.1Ω(1kΩ×100ppm=0.1Ω);
  • 宽温区适配:在**-55℃~+155℃**范围内,最大阻值变化为±2.1%(100ppm×210℃温差),可满足工业级环境(如户外传感器、车载辅助电路)的温度波动需求。

三、结构设计与封装特性

1. 封装规格

采用0402封装(公制1005,尺寸:1.0mm×0.5mm×0.35mm),是小型化PCB布局的主流选择,适合智能手机、智能手表、小型医疗设备等对空间要求苛刻的产品。

2. 厚膜电阻结构

  • 基片:高稳定性氧化铝陶瓷基片,耐高温、抗机械应力;
  • 电阻层:厚膜电阻浆料(RuO₂系),通过丝网印刷+烧结工艺形成,兼顾阻值精度与成本;
  • 电极:端电极采用Ni/Cu/Sn三层结构,适配回流焊、波峰焊工艺,焊接强度符合JIS C 5201标准,且符合RoHS环保要求。

四、典型应用场景

RK73H1ETTP1001F的参数适配性使其覆盖多领域:

1. 消费电子

  • 智能手机/平板电脑:电源管理模块的电压分压、音频电路的信号衰减;
  • 智能穿戴:智能手环/手表的传感器接口电路(如心率、加速度传感器的信号调理)。

2. 工业控制

  • 小型PLC:数字输入/输出模块的限流电阻;
  • 工业传感器:温度、压力传感器节点的信号放大电路(适应-55℃~+155℃宽温)。

3. 物联网终端

  • 智能家居:温湿度传感器、智能门锁的低功耗控制电路;
  • 无线模块:蓝牙/WiFi模块的天线匹配网络(小封装适配高密度布局)。

五、可靠性与使用注意事项

1. 可靠性验证

  • 长期稳定性:经KOA老化测试,1000小时高温(125℃)下阻值漂移≤0.5%;
  • 抗湿性:在95%相对湿度、40℃环境下1000小时,阻值变化≤1%。

2. 使用要点

  • 焊接工艺:回流焊峰值温度控制在230~250℃(时间≤30秒),避免过热损坏电阻层;
  • 布局设计:0402封装需注意PCB焊盘尺寸(建议0.6mm×0.3mm),防止虚焊;
  • 替代选型:若需替换,需确认封装、阻值、精度、TCR、功率等参数完全匹配(如KOA同系列RK73H1ETTP1001G精度±0.5%,可用于更高要求场景)。

RK73H1ETTP1001F以“小封装+稳定性能+成本优势”成为被动元件选型的常用选项,尤其适合对空间、宽温、精度有综合要求的电路设计。

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