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RK73H2ATTD2201F是日本KOA公司推出的一款通用型厚膜贴片电阻,采用0805(2012公制)封装,凭借稳定的电气性能、宽温度适应范围及高性价比,成为消费电子、工业控制等领域的主流选型之一。
该电阻属于厚膜贴片电阻系列,核心参数明确:阻值2.2kΩ、精度±1%、额定功率250mW、工作电压150V,温度系数±100ppm/℃,工作温度覆盖-55℃至+155℃。其定位为中精度、宽温域通用电阻,兼顾性能稳定性与成本控制,适配多数电子电路的阻抗匹配、分压、限流等基础功能需求,无需额外投入高精度电阻的成本。
阻值标称2.2kΩ(对应代码“2201”,前三位为有效数字220,第四位为倍率10¹),精度±1%,可满足电路对阻抗一致性的要求——例如,在模拟信号调理电路中,±1%精度可避免因阻值偏差导致的信号失真;相比±5%精度电阻,其在批量生产中的参数一致性更高,减少电路调试难度。
温度系数为±100ppm/℃,即温度每变化1℃,阻值变化±0.01%。在全工作温度范围(-55℃~+155℃)内,最大阻值变化量约为±2.2Ω(2.2kΩ×100ppm/℃×210℃),可满足工业设备、车载辅助电路等宽温环境下的性能稳定需求,无需额外增加温度补偿电路。
采用0805英寸(2.0mm×1.2mm)贴片封装,符合公制2012规格,尺寸紧凑,适合高密度PCB设计(例如智能手机、小型工业控制器的多层板);焊盘设计兼容常规回流焊工艺,可实现自动化贴装,提升生产效率。
该电阻采用厚膜丝网印刷+高温烧结工艺:将电阻浆料印刷在氧化铝陶瓷基片上,经高温烧结形成稳定的电阻膜,再通过激光微调实现精度控制。相比薄膜电阻(精度更高但成本高),厚膜工艺成本更低;相比碳膜贴片电阻(精度低、温度系数大),其性能更稳定,抗湿、抗浪涌能力更强。
RK73H2ATTD2201F的参数适配性使其广泛应用于以下领域:
产品符合RoHS 2.0、REACH等国际环保标准,采用无铅焊端,避免有害物质对环境和人体的影响,适配全球市场的环保要求。
KOA作为日本老牌电子元器件厂商,拥有超过70年的电阻生产经验,其产品以品质稳定、供货可靠著称。RK73H2ATTD2201F经过严格的出厂测试,每批次阻值一致性符合±1%精度要求,可满足量产项目的一致性需求;同时,KOA提供完善的技术支持,帮助客户解决电路设计中的电阻选型问题。
总结而言,RK73H2ATTD2201F是一款性能均衡、成本可控的厚膜贴片电阻,适合对精度、温域有基础要求的电子设备,是工业控制、消费电子等领域的高性价比选型。
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