WMSIC Electronic Components

KOA RK73H2ATTD6801F

ModelRK73H2ATTD6801F
Package0805
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+

Availability on request

Technical data

Product details

20 specifications

Core information

Product name
KOA RK73H2ATTD6801F
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
RK73H2ATTD6801F
Electronic Component
1
Package
0805
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.027g
Electronic Component
6.8kΩ
Electronic Component
1
Electronic Component
BM0265810604
Operating Temperature
55℃~+155℃
Electronic Component
±100ppm/℃
Resistor Type
Resistor

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

RK73H2ATTD6801F 厚膜片式电阻器产品概述

RK73H2ATTD6801F是日本KOA公司推出的通用型高精度厚膜片式电阻器,采用0805(英制)表面贴装封装,针对工业级温度范围与小功率电路设计,广泛适配消费电子、汽车电子、工业控制等领域的信号调节、分压、限流等基础应用场景。

一、产品核心定位与基础属性

该电阻属于KOA厚膜电阻系列中的经济型高精度型号,核心定位为:

  • 满足多数电子电路对阻值精度(±1%)、功率承载(250mW)的通用需求;
  • 适配宽温环境(-55℃~+155℃),符合工业级/汽车级可靠性要求;
  • 采用0805封装,兼顾PCB面积占用与生产兼容性,适合自动化贴片工艺。

二、关键电气与物理参数解析

1. 阻值与精度

  • 标称阻值:6.8kΩ(四位代码表示为“6801”,即680×10¹=6800Ω);
  • 精度等级:±1%(工业级常用精度,比±5%电阻更稳定,可避免电路信号失真或功率损耗异常)。

2. 功率与温度特性

  • 额定功率:250mW(1/4W),匹配0805封装的功率承载上限;
  • 温度系数(TC):±100ppm/℃(厚膜电阻典型值,意味着温度每变化1℃,阻值变化约0.01%;例如从25℃升至125℃,阻值漂移约1%,满足多数宽温场景需求)。

3. 物理与环境参数

  • 封装尺寸:0805(英制),对应公制2012,尺寸为2.0mm×1.2mm×0.5mm(典型值);
  • 工作温度范围:-55℃~+155℃(覆盖汽车发动机舱、户外工业设备等极端温度场景);
  • 焊接兼容性:支持回流焊、波峰焊等标准表面贴装工艺(需遵循KOA焊接规范)。

三、性能优势与可靠性

1. 精度稳定性可靠

±1%的精度等级经过批量生产一致性管控,避免因单批阻值偏差导致的电路性能波动,适合需要稳定分压、限流的信号电路。

2. 宽温下阻值漂移小

±100ppm/℃的温度系数在厚膜电阻中属于较高稳定性级别,即使在极端温度(如-40℃低温或150℃高温)下,阻值变化仍在可接受范围内,无需额外温度补偿电路。

3. 功率承载与寿命

250mW额定功率下,厚膜工艺(丝网印刷+烧结)带来的电阻膜层附着力强、热稳定性好,长期工作(1000小时以上)阻值漂移率通常≤0.5%,远优于普通碳膜电阻。

4. 环境适应性

通过KOA标准可靠性测试:

  • 高温高湿测试(85℃/85%RH,1000小时):阻值变化≤1%;
  • 温度循环测试(-55℃~+155℃,1000次循环):无开路/短路,阻值变化≤0.5%。

四、典型应用场景

1. 汽车电子

  • 车载中控屏的电源电压检测电路(分压反馈);
  • 传感器信号调节(如胎压传感器、温度传感器的信号放大前分压);
  • 车灯控制电路的限流保护。

2. 工业控制

  • PLC输入输出接口的上拉/下拉电阻;
  • 小型电机驱动电路的限流电阻;
  • 工业传感器的信号滤波(与电容构成RC滤波)。

3. 消费电子

  • 智能手机/平板的音频电路信号衰减;
  • 电源管理模块的电压反馈网络;
  • 可穿戴设备的传感器信号调节。

4. 通信设备

  • 路由器/交换机的信号滤波电路;
  • 基站电源模块的过流保护限流电阻。

五、选型与使用注意事项

1. 功率降额建议

实际使用中建议将功率控制在额定值的50%-70%(即125mW-175mW),避免长期过热导致阻值漂移或失效(尤其是在高温环境下)。

2. 焊接规范

  • 回流焊峰值温度:245℃±5℃,时间≤10秒;
  • 波峰焊温度:260℃±5℃,时间≤5秒;
  • 避免手工焊接温度过高(>300℃),防止损坏电阻膜层。

3. 静电防护

厚膜电阻抗静电能力(通常≥2kV)优于薄膜电阻,但仍需在ESD防护环境下操作,避免静电击穿。

4. 替代选型参考

  • 若需更高精度(±0.1%)或更低TC(±50ppm/℃),可选择KOA RK73Z系列薄膜电阻;
  • 若需更大功率(如500mW),可换用1206封装的同阻值电阻(如RK73H2ATTD6801F的1206版本)。

RK73H2ATTD6801F凭借其高性价比、宽温稳定性、通用兼容性,成为电子电路设计中基础电阻的优选型号之一,适用于对精度、可靠性有一定要求但无需超高端性能的多数场景。

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