WMSIC Electronic Components

KOA RK73H2ATTD10R0F

ModelRK73H2ATTD10R0F
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 25+

Available for RFQ

Technical data

Product details

20 specifications

Core information

Product name
KOA RK73H2ATTD10R0F
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
RK73H2ATTD10R0F
Electronic Component
1
Package
805
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.027g
Electronic Component
10Ω
Electronic Component
1
Electronic Component
BM0265148158
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.

RK73H2ATTD10R0F厚膜贴片电阻产品概述

一、产品核心定位与典型应用场景

RK73H2ATTD10R0F是KOA推出的0805封装厚膜贴片电阻,主打「中小功率+高精度+宽温适应性」,兼顾成本与性能稳定性,广泛适配消费电子、工业控制、通信设备等领域的电路设计。

典型应用场景包括:

  • 消费电子:手机主板信号调理电路、蓝牙模块限流电阻、可穿戴设备传感器接口分压;
  • 工业控制:PLC模拟量采样电路、电机驱动过流保护限流、工业传感器信号滤波;
  • 通信设备:路由器电源模块过流检测、基站射频电路匹配电阻;
  • 汽车电子:车载中控小功率LED驱动、低温环境户外设备信号链路。

二、关键性能参数深度解析

该电阻的核心参数直接决定适用场景,各参数的实际意义需结合电路需求理解:

(1)阻值与精度:10Ω±1%

±1%精度属于常规高精度范畴,远优于碳膜贴片(通常±5%),能满足对阻值一致性要求较高的电路。例如电流采样电路中,精准阻值可减少「I=V/R」的计算误差,提升监测精度。

(2)额定功率:250mW

0805封装的主流功率规格,适配大部分中小功率电路。需注意:实际功率需同时满足 P≤V²/R,即两端电压需≤√(250mW×10Ω)≈1.58V,避免电压过高导致功率超标。

(3)工作电压:150V(耐电压指标)

此处150V为最大耐电压(非额定功率下的工作电压),表示电阻两端可承受的最高直流/交流电压(无击穿风险),但实际使用仍需以功率不超标为前提。

(4)温度系数:±100ppm/℃

温度每变化1℃,阻值变化±100×10⁻⁶,即10Ω电阻每变化1℃,阻值变化±0.001Ω。例如环境温度从25℃升至125℃(变化100℃),阻值仅变化±0.1Ω,满足高温/低温波动场景的稳定性。

(5)工作温度范围:-55℃~+155℃

覆盖工业级宽温区,比常规商业级(0℃~70℃)更宽,可适配高温环境(如电源模块内部)或低温环境(如北方户外设备)。

三、封装与工艺优势

(1)0805封装:紧凑适配高密度设计

英制0805封装(公制2012,尺寸2.0mm×1.2mm),体积小、重量轻,适合PCB布局紧凑的产品(如智能手机、可穿戴设备),有效提升电路集成度。

(2)厚膜工艺:成本与性能平衡

采用KOA成熟的厚膜电阻工艺(丝网印刷+高温烧结),相比薄膜电阻成本更低,相比碳膜电阻精度更高、稳定性更好。核心优势:

  • 浆料配方稳定:阻值一致性优于同类型竞品;
  • 焊接兼容性强:引脚与PCB焊盘匹配度高,回流焊良率达99%以上。

四、可靠性与环境适应性

该产品通过多项行业可靠性测试,满足工业级应用要求:

  • 耐焊接热:符合J-STD-020标准,260℃回流焊3次后无外观/性能失效;
  • 耐湿性:85℃/85%RH环境下放置1000小时,阻值变化≤0.5%;
  • 长期稳定性:额定功率下连续工作1000小时,阻值漂移≤0.2%;
  • 抗机械应力:符合IEC 60068-2-21标准,抗弯折能力适配批量贴片生产。

五、选型与使用注意事项

  1. 功率降额:实际使用功率建议不超过额定功率的80%(200mW),延长使用寿命;
  2. 温度系数匹配:若电路对温度敏感,需计算温变误差(如温变50℃,误差±0.005Ω);
  3. 焊接工艺:优先采用回流焊(240℃260℃,1030秒),避免手工焊接温度过高(>280℃);
  4. 静电防护:批量生产时需接地,避免静电影响长期稳定性(虽非ESD敏感元件,但静电可能加速老化)。

总结

RK73H2ATTD10R0F凭借「1%高精度、250mW功率、-55℃~155℃宽温」等核心优势,结合0805封装的紧凑性与厚膜工艺的成本优势,成为消费电子、工业控制等领域中小功率电路的高性价比选择,适配多种严苛应用场景。

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