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ERJ2RKF5231X是松下(PANASONIC)推出的一款小型化厚膜贴片电阻,针对高密度、低功耗电路设计,具备中等精度、宽温适应性等特点,可满足多领域电子设备的信号调理、分压限流等基础应用需求。
该型号属于松下常规精度厚膜贴片电阻系列,核心定位为小功率、中等精度的通用型贴片电阻,适配对体积敏感、功耗要求低但需稳定阻值表现的电路场景。作为厚膜电阻,其采用丝网印刷厚膜工艺制造,兼顾成本与性能,是电子设计中常用的基础元器件之一。
标称阻值为5.23kΩ,精度等级为**±1%**,即实际阻值范围在5.1777kΩ~5.2823kΩ之间,能满足大多数需要中等阻值精度的应用(如模拟信号放大的偏置电路、电压分压网络等),相比±5%精度电阻,可减少电路参数偏差带来的影响。
额定功率为100mW(0.1W),适用于低功耗电路(如便携设备的传感器信号链、小型MCU的辅助电路等)。需注意:电路工作时,电阻实际功耗不得超过100mW(计算方式:(P=I^2R=V^2/R)),避免因过热导致阻值漂移或损坏。
温度系数为**±100ppm/℃**,表示电阻阻值随温度变化的速率:每升高或降低1℃,阻值变化约为标称值的百万分之一百。例如,当环境温度从25℃(常温)升至155℃(工作上限),温度变化130℃,阻值变化量约为(5.23kΩ×130×100ppm=679.9Ω),即此时阻值范围扩展至(5.1777kΩ±679.9Ω),但仍在电路可接受的偏差范围内,保证宽温下的性能稳定性。
采用0402封装(英制尺寸:0.04英寸×0.02英寸,公制尺寸:1.0mm×0.5mm),是贴片电阻中体积较小的封装类型之一,适配高密度PCB设计(如智能手机主板、智能穿戴设备模块、小型传感器节点等)。该封装支持常规贴片焊接工艺(回流焊、波峰焊),焊接兼容性好,可实现自动化批量生产,降低人工成本。
工作温度范围为**-55℃~+155℃**,符合工业级宽温要求,能适应极端环境:
作为松下旗下产品,ERJ2RKF5231X具备成熟的生产工艺与严格的品质管控:
该电阻通过了松下内部及行业标准测试,可长期稳定运行于各类低功耗、中等精度的电子电路中,是设计人员优化电路体积与性能的可靠选择。
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