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FH RC-02K9092FT是风华电子(FH)推出的0402封装厚膜贴片电阻,针对中高精度、小功率、高密度PCB设计场景优化,兼具成本优势与稳定性。其核心参数围绕“高精度+小封装+宽温适配”设计,可满足消费电子、工业控制等多领域的基础精密应用需求。
从型号命名可直观解读关键信息:
核心参数总览:
参数项 规格值 电阻类型 厚膜贴片电阻 标称阻值 90.9kΩ 精度 ±1% 额定功率 62.5mW 工作电压(额定) 50V(降额后) 温度系数(TCR) ±100ppm/℃ 工作温度范围 -55℃~+155℃ 封装 0402(1005)90.9kΩ为标准高精度阻值,避免非标准值的配对困难;±1%精度(比常规±5%碳膜电阻高2倍),可覆盖信号调理、分压网络、传感器接口等对阻值一致性要求较高的场景。例如,24V电源分压电路中,该电阻与10kΩ配对可输出约2.4V精准电压,误差控制在0.24V以内。
额定功率62.5mW是0402封装厚膜电阻的典型值,结合阻值计算理论额定电压≈75.4V,但产品标注50V工作电压,属于可靠性降额设计(降额约66%),可降低热应力对电阻膜的老化影响。实际应用建议功耗≤37.5mW(降额60%),进一步提升稳定性。
±100ppm/℃的TCR表示:温度每变化1℃,阻值变化±0.01%。全温区(-55℃~+155℃)下阻值最大变化±2.1%,叠加±1%精度误差,总误差≤±3.1%,满足工业环境(温度波动±20℃)的基本精度要求。
-55℃+155℃远超常规消费电子(0℃+70℃),接近汽车电子(-40℃~+125℃)标准,可适配户外工业设备、车载小功率模块等高低温环境。
0402封装(1.0mm×0.5mm)是小型电子设备主流封装,可使PCB布局密度提升30%以上,适合智能手机、可穿戴设备、小型通信模块等空间苛刻的产品。
厚膜电阻通过丝网印刷+高温烧结工艺在氧化铝陶瓷基片上形成电阻膜,相比薄膜电阻成本降低40%,相比碳膜电阻稳定性提升2倍,且抗硫化性能优于薄膜电阻(适合潮湿环境),是中低端精密应用的性价比之选。
风华电子(FH)是国内厚膜电阻龙头企业,拥有20余年生产经验,RC-02K9092FT符合RoHS 2.0、REACH环保标准,批量一致性误差≤0.5%(优于行业±1%标称精度),可提供长期稳定供货。
FH RC-02K9092FT是一款“高精度+小封装+宽温适配”的高性价比厚膜贴片电阻,覆盖消费电子、工业控制等多领域基础精密应用,是替代进口同规格产品的理想选择。
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