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SC0805F4702F4ANRH是信维通信(Sunway) 推出的一款0805封装厚膜贴片电阻,属于通用型电阻器件,主打“宽温稳定、精度可靠、适配主流贴装”三大特点,广泛覆盖消费电子、工业控制、汽车电子等多领域的电路设计需求。作为厚膜电阻,其采用丝网印刷+高温烧结工艺制备电阻膜层,平衡了性能与成本,是电子电路中分压、限流、滤波、匹配等基础功能的理想选择。
该电阻的核心参数针对主流电路需求进行了优化,具体如下:
阻值标称47kΩ(对应4位代码“4702”,即470×10²Ω=47000Ω),精度等级为**±1%**。这一精度可满足大多数工业级及消费电子电路对阻值偏差的要求——例如在电池管理系统的电压分压检测中,±1%的精度能将电池电量计算误差控制在1%以内,避免因阻值偏差导致的过充/过放风险。
额定功率125mW(0.125W),工作电压上限150V,匹配0805封装的常规功率等级。在小功率信号处理场景中(如音频滤波、传感器偏置电路),125mW的功率可稳定承载负载;150V的电压上限则覆盖了低压直流(如12V/24V工业电源)及低频交流(如市电整流后的直流母线)电路的工作需求,无需额外降额即可安全使用。
温度系数(TCR)为**±100ppm/℃,意味着温度每变化1℃,阻值变化不超过0.01%;工作温度范围覆盖-55℃~+155℃**,是典型的宽温级电阻。以汽车发动机舱(工作温度可达125℃)为例,从-40℃(冬季低温)到125℃(发动机运行),阻值最大变化量约为±100ppm×165℃=±1.65%,结合初始±1%精度,整体偏差仍在电路可接受范围内,确保宽温环境下性能稳定。
封装规格为0805(英制),对应公制尺寸2.0mm×1.2mm,是贴片电阻中应用最广泛的封装之一。该封装适配自动化贴装生产线(回流焊、波峰焊均兼容),生产效率高;同时体积小巧,可有效节省电路板空间,适合高密度PCB设计(如智能手机主板、小型工业控制器)。
采用厚膜电阻工艺(氧化铝陶瓷基板+厚膜电阻浆料烧结),相比薄膜电阻成本更低,且具备更好的耐浪涌能力(可承受短时间过功率冲击)。信维通信对该产品进行了多项可靠性测试:
SC0805F4702F4ANRH的参数特性使其适配多领域电路:
SC0805F4702F4ANRH作为信维通信的主流厚膜贴片电阻,以**±1%精度、±100ppm/℃温度系数、-55℃~+155℃宽温**为核心优势,结合0805封装的高适配性,可满足从消费电子到汽车电子的多场景需求。其厚膜工艺平衡了性能与成本,可靠性测试覆盖主流应用环境,是电子电路设计中分压、限流等基础功能的高性价比选择。
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